Values for string table elements are missing from non-volatile variables file

Applies To:

Firmware for the following groov EPICs:

GRV-EPIC-PR1
GRV-EPIC-PR2

Firmware for the following SNAP PACs:

SNAP-PAC-S1, SNAP-PAC-S1-FM, SNAP-PAC-S1-W
SNAP-PAC-S2, SNAP-PAC-S2-W
SNAP-PAC-R1, SNAP-PAC-R1-FM, SNAP-PAC-R1-W, SNAP-PAC-R1-B
SNAP-PAC-R2, SNAP-PAC-R2-FM, SNAP-PAC-R2-W
SoftPAC

Versions Affected:

For groov EPICs: 3.4.0 to 4.0.3
For SNAP PACs: R10.5g to R10.6b

Resolved In Version:

For groov EPICs: 4.1.0
For SNAP PACs: R10.7a

Symptoms:

In Debug mode of PAC Control, when you download non-volatile variables by selecting Control Engine > Download Non-Volatile Variables, you may observe that the download takes a long time and the control engine eventually resets. If you are using PAC controllers, this issue also happens if you use PAC Terminal with File > Download Non-Volatile Variables File.

This issue is more likely to happen if the file has a string table variable because when you created the non-volatile variables file (*.nvf) (by selecting Control Engine > Upload Non-Volatile Variables), the values for the elements of the string table variables are missing from the .nvf file that PAC Control created. If you are using PAC controllers, this issue also happens if you created the .nvf file in PAC Terminal by selecting File > Upload Non-Volatile Variables File.

Workaround:

For SNAP PACs, use OptoTagPreserve to back up and restore the values of variables.
For groov EPICs, update to firmware version 4.1.0 or higher to avoid this issue.

Resolution:

Opto 22 has resolved this issue.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com

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