Generate N Pulses with N set to 0 starts a TPO when using groov I/O

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

Firmware for SoftPAC

Versions Affected:

For groov EPICs: All versions prior to 3.6.0
For SNAP PACs: All versions prior to R10.5g
For SoftPAC: All versions

Resolved In Version:

For groov EPICs: 3.6.0
For SNAP PACs: R10.5g

Symptoms:

In your PAC Control strategy, if 0 is specified for the Number of Pulses parameter of the Generate N Pulses command, then no TPO pulses should be started. However, groov I/O incorrectly treats a 0 as a signal to start TPO pulses.

Workaround:

Verify that the number of pulses to execute is a positive, non-zero value before using the Generate N Pulses command.

Resolution:

Opto 22 has resolved this issue and will include the fix in an upcoming release.

Questions?

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

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