groov Digital Output On-pulse or Off-pulse Performs Inconsistently

Applies To:

Firmware for GRV-EPIC-PR1

Versions Affected:

1.0.0 through 1.3.0

Resolved In Version:

1.3.1

Symptoms:

When using the PAC Control commands Start On-Pulse or Start Off-Pulse, digital output pulsing performs inconsistently on the following modules:

GRV-OAC-12
GRV-OACI-12
GRV-ODCI-12
GRV-ODCSRC-24

When using the PAC Control command Start On Pulse or Start Off Pulse, you may observe these issues with the pulsed output:

Symptom #1—The I/O channel sometimes does not pulse.
Symptom #2—The I/O channel may display undesirable behavior such as a lengthened pulse when you use the Set TPO Period, Set TPO Percent, or Generate N Pulses command at approximately the same time as either the Start On-Pulse or Start Off-Pulse command.

Workaround:

For symptom #1, use chart logic to replicate the functionality of the Start On-Pulse and Start Off-Pulse commands. For example, turn ON (or OFF) the I/O channel, then delay the desired amount of time, and then the turn OFF (or ON) the channel.

For symptom #2, ensure that Start On Pulse (Start Off Pulse) does not run concurrently with changing TPO parameters or Generate N Pulses. If possible, move the I/O channel that is changed by TPO parameters or Generate N Pulses to a different module.

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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