Communication to EPIC I/O unit does not reenable

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
SNAP-PAC-R1 (GEN2)
SoftPAC

Versions Affected:

For groov EPICs: 3.0.0 to 3.6.0
For SNAP PACs: R10.4c to R10.5g

Resolved In Version:

For groov EPICs: 4.0.0
For SNAP PACs: R10.6a

Symptoms:

If you configured Ethernet redundancy in your PAC Control strategy and the strategy configures a groov EPIC I/O unit with the Eth0 address as primary and the Eth1 address as secondary, the PAC Control Enable Communication to I/O Unit command fails to enable the groov EPIC I/O unit if it is used after this sequence:

There was a loss of communication with Eth0, which led to a switch from Eth0 to Eth1, then
there was a loss of communication with Eth1 while Eth0 was unavailable, leading to communication to the I/O unit becoming disabled, then
Eth1 became available again.

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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