Report Slave ID Modbus function code (0x11) response is missing data byte count

Applies To:

Firmware for the following EPICs:

GRV-EPIC-PR1
GRV-EPIC-PR2

Firmware for the following RIOs:

GRV-R7-MM1001-10
GRV-R7-MM2001-10
GRV-R7-I1VAPM-3

Firmware for the following SNAP PACs:

G4EB2
SNAP-PAC-EB1, SNAP-PAC-EB1-W
SNAP-PAC-EB2, SNAP-PAC-EB2-W
SNAP-PAC-R1, SNAP-PAC-R1 (GEN2), SNAP-PAC-R1-W
SNAP-PAC-R2, SNAP-PAC-R2-W
SNAP-PAC-S1, SNAP-PAC-S1-W
SNAP-PAC-S2, SNAP-PAC-S2-W

Firmware for the following products:

OPTOEMU-SNR-3V
OPTOEMU-SNR-DR1
OPTOEMU-SNR-DR2

NOTE: The OPTOEMU products are no longer receiving firmware updates.

Versions Affected:

All versions

Resolved In Version:

For SNAP PACs: R10.7b
For EPICs: not yet resolved
For RIOs: not yet resolved

Symptoms:

The Report Slave ID Modbus function code (0x11) response is missing the data byte count.

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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