Control engine port 22001 may become unresponsive if bootup is interrupted Knowledge Base - KB80103 - Published: 7/6/2023 If a control engine's bootup process is interrupted by a connection attempt at just the right moment, its host port 22001 becomes unresponsive. Communication attempts by PAC Control or PAC Term, for...moreIf a control engine's bootup process is interrupted by a connection attempt at just the right moment, its host port 22001 becomes unresponsive. Communication attempts by PAC Control or PAC Term, for example, result in error -10038. The unit's port 2001 continues to respond to pings and connections attempts. Cycling power to the control engine restores operation. An OptoTerminal G70 or G75 can also cause this lockup. If a control engine and an OptoTerminal are turned on at the same time, the OptoTerminal finishes booting up first and may trigger the bug, disabling the control engine's port 22001 until power is cycled. <less Plugins yielding binary data truncate data after '00' sequence Knowledge Base - KB80010 - Published: 7/5/2023 Plugins yielding binary data as in event messages and SNMP traps for example, truncate the data being sent out if there is a 00 in the data sequence. Example plugins: $!B_F0D81000_ or �_ Plugins yielding binary data as in event messages and SNMP traps for example, truncate the data being sent out if there is a 00 in the data sequence. Example plugins: $!B_F0D81000_ or �_ <less 'Convert # to Hex String' command pads extra 0's in front of Integer 64 value Knowledge Base - KB60359 - Published: 7/5/2023 If the Convert Number to Hex String command is used with an Integer 64 value, then the result is a string with the converted number preceded by zeroes for the length of the string. For example, if this...moreIf the Convert Number to Hex String command is used with an Integer 64 value, then the result is a string with the converted number preceded by zeroes for the length of the string. For example, if this command is used with an Integer 64 value of 8 and a string of length 10, then the resulting string is: "0000000008". <less Problems with very high/low controller error queue values and GetErrorCodeOfCurrentError() Knowledge Base - KB54982 - Published: 7/5/2023 With very high or very low numbers, the returned value from the PAC Control command GetErrorCodeOfCurrentError(), does not match the error code displayed in the View Messages dialog (the controller error...moreWith very high or very low numbers, the returned value from the PAC Control command GetErrorCodeOfCurrentError(), does not match the error code displayed in the View Messages dialog (the controller error queue) from Debug mode. To duplicate this error, use the AddUserIOUnitErrorToQueue() command to add the errors 2147483647 and -2147483648 to the error queue. Get Error Code of Current Error() correctly returns the error code value of 2147483647, but it does not match the -1 displayed in the Code field of the View Messages dialog. Get Error Code of Current Error() correctly returns the error code value of -2147483648, but it does not match the 0 displayed in the Code field of the View Messages dialog. The error code range should be limited to values from ‑32768 to +32767. <less SNMP community settings for Read or Write permissions may behave incorrectly Knowledge Base - KB80171 - Published: 7/5/2023 If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected.If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected. <less Unusually large change in PID Output or Integral Knowledge Base - KB83813 - Published: 7/6/2023 You may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one...moreYou may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one scan time. For example, a change from -1625 to 3282675.This issue affects only ISA, Parallel, and Interacting PID algorithms. If the PID input is functioning correctly, this issue won't be triggered. It is triggered only when ALL of the following conditions are met:The PID output is at the lower or upper clamp value.The PID input is configured to be an analog input point.The analog input module goes offline or resets. <less Changing the PID setpoint may cause a jump in the PID output Knowledge Base - KB80117 - Published: 7/6/2023 Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate.Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate. <less SNAP-PAC-R2s configured in ioControl as I/O units may behave unexpectedly Knowledge Base - KB52053 - Published: 7/5/2023 I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected...more I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected behaviors include outputs not turning on, scaling, and other point or I/O Unit configuration parameters having no effect.[image1] <less Analog output modules in positions 8 to 15 do not respond to ioControl ‘Ramp Analog Output’ command Knowledge Base - KB52885 - Published: 7/5/2023 Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. <less Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
Plugins yielding binary data truncate data after '00' sequence Knowledge Base - KB80010 - Published: 7/5/2023 Plugins yielding binary data as in event messages and SNMP traps for example, truncate the data being sent out if there is a 00 in the data sequence. Example plugins: $!B_F0D81000_ or �_ Plugins yielding binary data as in event messages and SNMP traps for example, truncate the data being sent out if there is a 00 in the data sequence. Example plugins: $!B_F0D81000_ or �_ <less 'Convert # to Hex String' command pads extra 0's in front of Integer 64 value Knowledge Base - KB60359 - Published: 7/5/2023 If the Convert Number to Hex String command is used with an Integer 64 value, then the result is a string with the converted number preceded by zeroes for the length of the string. For example, if this...moreIf the Convert Number to Hex String command is used with an Integer 64 value, then the result is a string with the converted number preceded by zeroes for the length of the string. For example, if this command is used with an Integer 64 value of 8 and a string of length 10, then the resulting string is: "0000000008". <less Problems with very high/low controller error queue values and GetErrorCodeOfCurrentError() Knowledge Base - KB54982 - Published: 7/5/2023 With very high or very low numbers, the returned value from the PAC Control command GetErrorCodeOfCurrentError(), does not match the error code displayed in the View Messages dialog (the controller error...moreWith very high or very low numbers, the returned value from the PAC Control command GetErrorCodeOfCurrentError(), does not match the error code displayed in the View Messages dialog (the controller error queue) from Debug mode. To duplicate this error, use the AddUserIOUnitErrorToQueue() command to add the errors 2147483647 and -2147483648 to the error queue. Get Error Code of Current Error() correctly returns the error code value of 2147483647, but it does not match the -1 displayed in the Code field of the View Messages dialog. Get Error Code of Current Error() correctly returns the error code value of -2147483648, but it does not match the 0 displayed in the Code field of the View Messages dialog. The error code range should be limited to values from ‑32768 to +32767. <less SNMP community settings for Read or Write permissions may behave incorrectly Knowledge Base - KB80171 - Published: 7/5/2023 If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected.If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected. <less Unusually large change in PID Output or Integral Knowledge Base - KB83813 - Published: 7/6/2023 You may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one...moreYou may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one scan time. For example, a change from -1625 to 3282675.This issue affects only ISA, Parallel, and Interacting PID algorithms. If the PID input is functioning correctly, this issue won't be triggered. It is triggered only when ALL of the following conditions are met:The PID output is at the lower or upper clamp value.The PID input is configured to be an analog input point.The analog input module goes offline or resets. <less Changing the PID setpoint may cause a jump in the PID output Knowledge Base - KB80117 - Published: 7/6/2023 Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate.Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate. <less SNAP-PAC-R2s configured in ioControl as I/O units may behave unexpectedly Knowledge Base - KB52053 - Published: 7/5/2023 I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected...more I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected behaviors include outputs not turning on, scaling, and other point or I/O Unit configuration parameters having no effect.[image1] <less Analog output modules in positions 8 to 15 do not respond to ioControl ‘Ramp Analog Output’ command Knowledge Base - KB52885 - Published: 7/5/2023 Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. <less Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
'Convert # to Hex String' command pads extra 0's in front of Integer 64 value Knowledge Base - KB60359 - Published: 7/5/2023 If the Convert Number to Hex String command is used with an Integer 64 value, then the result is a string with the converted number preceded by zeroes for the length of the string. For example, if this...moreIf the Convert Number to Hex String command is used with an Integer 64 value, then the result is a string with the converted number preceded by zeroes for the length of the string. For example, if this command is used with an Integer 64 value of 8 and a string of length 10, then the resulting string is: "0000000008". <less Problems with very high/low controller error queue values and GetErrorCodeOfCurrentError() Knowledge Base - KB54982 - Published: 7/5/2023 With very high or very low numbers, the returned value from the PAC Control command GetErrorCodeOfCurrentError(), does not match the error code displayed in the View Messages dialog (the controller error...moreWith very high or very low numbers, the returned value from the PAC Control command GetErrorCodeOfCurrentError(), does not match the error code displayed in the View Messages dialog (the controller error queue) from Debug mode. To duplicate this error, use the AddUserIOUnitErrorToQueue() command to add the errors 2147483647 and -2147483648 to the error queue. Get Error Code of Current Error() correctly returns the error code value of 2147483647, but it does not match the -1 displayed in the Code field of the View Messages dialog. Get Error Code of Current Error() correctly returns the error code value of -2147483648, but it does not match the 0 displayed in the Code field of the View Messages dialog. The error code range should be limited to values from ‑32768 to +32767. <less SNMP community settings for Read or Write permissions may behave incorrectly Knowledge Base - KB80171 - Published: 7/5/2023 If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected.If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected. <less Unusually large change in PID Output or Integral Knowledge Base - KB83813 - Published: 7/6/2023 You may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one...moreYou may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one scan time. For example, a change from -1625 to 3282675.This issue affects only ISA, Parallel, and Interacting PID algorithms. If the PID input is functioning correctly, this issue won't be triggered. It is triggered only when ALL of the following conditions are met:The PID output is at the lower or upper clamp value.The PID input is configured to be an analog input point.The analog input module goes offline or resets. <less Changing the PID setpoint may cause a jump in the PID output Knowledge Base - KB80117 - Published: 7/6/2023 Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate.Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate. <less SNAP-PAC-R2s configured in ioControl as I/O units may behave unexpectedly Knowledge Base - KB52053 - Published: 7/5/2023 I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected...more I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected behaviors include outputs not turning on, scaling, and other point or I/O Unit configuration parameters having no effect.[image1] <less Analog output modules in positions 8 to 15 do not respond to ioControl ‘Ramp Analog Output’ command Knowledge Base - KB52885 - Published: 7/5/2023 Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. <less Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
Problems with very high/low controller error queue values and GetErrorCodeOfCurrentError() Knowledge Base - KB54982 - Published: 7/5/2023 With very high or very low numbers, the returned value from the PAC Control command GetErrorCodeOfCurrentError(), does not match the error code displayed in the View Messages dialog (the controller error...moreWith very high or very low numbers, the returned value from the PAC Control command GetErrorCodeOfCurrentError(), does not match the error code displayed in the View Messages dialog (the controller error queue) from Debug mode. To duplicate this error, use the AddUserIOUnitErrorToQueue() command to add the errors 2147483647 and -2147483648 to the error queue. Get Error Code of Current Error() correctly returns the error code value of 2147483647, but it does not match the -1 displayed in the Code field of the View Messages dialog. Get Error Code of Current Error() correctly returns the error code value of -2147483648, but it does not match the 0 displayed in the Code field of the View Messages dialog. The error code range should be limited to values from ‑32768 to +32767. <less SNMP community settings for Read or Write permissions may behave incorrectly Knowledge Base - KB80171 - Published: 7/5/2023 If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected.If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected. <less Unusually large change in PID Output or Integral Knowledge Base - KB83813 - Published: 7/6/2023 You may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one...moreYou may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one scan time. For example, a change from -1625 to 3282675.This issue affects only ISA, Parallel, and Interacting PID algorithms. If the PID input is functioning correctly, this issue won't be triggered. It is triggered only when ALL of the following conditions are met:The PID output is at the lower or upper clamp value.The PID input is configured to be an analog input point.The analog input module goes offline or resets. <less Changing the PID setpoint may cause a jump in the PID output Knowledge Base - KB80117 - Published: 7/6/2023 Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate.Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate. <less SNAP-PAC-R2s configured in ioControl as I/O units may behave unexpectedly Knowledge Base - KB52053 - Published: 7/5/2023 I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected...more I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected behaviors include outputs not turning on, scaling, and other point or I/O Unit configuration parameters having no effect.[image1] <less Analog output modules in positions 8 to 15 do not respond to ioControl ‘Ramp Analog Output’ command Knowledge Base - KB52885 - Published: 7/5/2023 Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. <less Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
SNMP community settings for Read or Write permissions may behave incorrectly Knowledge Base - KB80171 - Published: 7/5/2023 If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected.If the SNMP read/write permissions of community names used to access the SNMP agent are set to something other than both Read and Write = Yes, or both Read and Write = No, then the writing to, or reading from the SNMP agent does not work as expected. <less Unusually large change in PID Output or Integral Knowledge Base - KB83813 - Published: 7/6/2023 You may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one...moreYou may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one scan time. For example, a change from -1625 to 3282675.This issue affects only ISA, Parallel, and Interacting PID algorithms. If the PID input is functioning correctly, this issue won't be triggered. It is triggered only when ALL of the following conditions are met:The PID output is at the lower or upper clamp value.The PID input is configured to be an analog input point.The analog input module goes offline or resets. <less Changing the PID setpoint may cause a jump in the PID output Knowledge Base - KB80117 - Published: 7/6/2023 Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate.Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate. <less SNAP-PAC-R2s configured in ioControl as I/O units may behave unexpectedly Knowledge Base - KB52053 - Published: 7/5/2023 I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected...more I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected behaviors include outputs not turning on, scaling, and other point or I/O Unit configuration parameters having no effect.[image1] <less Analog output modules in positions 8 to 15 do not respond to ioControl ‘Ramp Analog Output’ command Knowledge Base - KB52885 - Published: 7/5/2023 Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. <less Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
Unusually large change in PID Output or Integral Knowledge Base - KB83813 - Published: 7/6/2023 You may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one...moreYou may see one or both of the following:PID Output drops from 100% to 0% in one scan time or increases from 0% to 100% in one scan time.Integral of PID changes by multiple orders of magnitude in one scan time. For example, a change from -1625 to 3282675.This issue affects only ISA, Parallel, and Interacting PID algorithms. If the PID input is functioning correctly, this issue won't be triggered. It is triggered only when ALL of the following conditions are met:The PID output is at the lower or upper clamp value.The PID input is configured to be an analog input point.The analog input module goes offline or resets. <less Changing the PID setpoint may cause a jump in the PID output Knowledge Base - KB80117 - Published: 7/6/2023 Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate.Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate. <less SNAP-PAC-R2s configured in ioControl as I/O units may behave unexpectedly Knowledge Base - KB52053 - Published: 7/5/2023 I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected...more I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected behaviors include outputs not turning on, scaling, and other point or I/O Unit configuration parameters having no effect.[image1] <less Analog output modules in positions 8 to 15 do not respond to ioControl ‘Ramp Analog Output’ command Knowledge Base - KB52885 - Published: 7/5/2023 Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. <less Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
Changing the PID setpoint may cause a jump in the PID output Knowledge Base - KB80117 - Published: 7/6/2023 Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate.Changes to a PID setpoint may cause the PID output to jump if the setpoint change is too large relative to the PID scan rate. <less SNAP-PAC-R2s configured in ioControl as I/O units may behave unexpectedly Knowledge Base - KB52053 - Published: 7/5/2023 I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected...more I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected behaviors include outputs not turning on, scaling, and other point or I/O Unit configuration parameters having no effect.[image1] <less Analog output modules in positions 8 to 15 do not respond to ioControl ‘Ramp Analog Output’ command Knowledge Base - KB52885 - Published: 7/5/2023 Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. <less Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
SNAP-PAC-R2s configured in ioControl as I/O units may behave unexpectedly Knowledge Base - KB52053 - Published: 7/5/2023 I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected...more I/O units configured in ioControl as ‘Type: SNAP-PAC-R2’ may behave unexpectedly because the point configuration information is not sent by the control engine to the SNAP-PAC-R2. The unexpected behaviors include outputs not turning on, scaling, and other point or I/O Unit configuration parameters having no effect.[image1] <less Analog output modules in positions 8 to 15 do not respond to ioControl ‘Ramp Analog Output’ command Knowledge Base - KB52885 - Published: 7/5/2023 Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. <less Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
Analog output modules in positions 8 to 15 do not respond to ioControl ‘Ramp Analog Output’ command Knowledge Base - KB52885 - Published: 7/5/2023 Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. Analog output modules in mounting rack positions 8 through 15, do not respond to the ioControl Ramp Analog Output command when used with a SNAP-PAC-R1. <less Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
Get Counter command's parameter list does not show power total (summation) tags from energy/power monitoring modules Knowledge Base - KB90461 - Published: 7/6/2023 <less Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
Some SNAP analog input modules report only -32768 or NaN to B3000-B series brains Knowledge Base - KB91204 - Published: 4/30/2026 When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN.When any of the affected SNAP analog input modules are used with SNAP-B3000, SNAP-B3000-B, or SNAP-B3000-B-OMUX brains, the modules report only -32768 or NaN. <less Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
Slow baud rates affect communication between SNAP-PAC-S controllers and serial I/O units Knowledge Base - KB80313 - Published: 7/5/2023 SNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B...moreSNAP-PAC-S controller serial ports cannot communicate at slower baud rates on 2-wire, half-duplex, RS-485 links such as when communicating to a SNAP-PAC-SB1, SNAP-PAC-SB2, or the B3000-B brains. This occurs when attempting to transmit from the serial port immediately after receiving characters. Communication works correctly at 38400 baud or faster. All four serial ports are affected. On the SNAP-PAC-S controller, you may see one green LED flash (transmit transaction), then one red flash (receive transaction), or you may see one green, one red, and then one more green flash. <less SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items
SNAP PAC firmware versions merge in version R9.1b Knowledge Base - KB81348 - Published: 7/5/2023 <less « PreviousPage 2 of 2 Show 25 Items Show All Items Show 10 Items Show 25 Items Show 50 Items Show 100 Items