PAC Control "Get I/O Unit as Binary Value" command may return incorrect values for certain SNAP I/O units

Applies To:

PAC Control Basic
PAC Control Professional

Versions Affected:

All versions

Symptoms:

This issue only impacts the following SNAP I/O units:

SNAP-PAC-EB1
SNAP-PAC-EB2
SNAP-PAC-R1-B
SNAP-PAC-R2
SNAP-PAC-SB1
SNAP-PAC-SB2
SNAP-ENET-D64
SNAP-ENET-S64
SNAP-UP1-D64
SNAP-UP1-M64

When using a 32-bit integer variable in the Put In argument of the Get I/O Unit as Binary Value command and specifying an impacted SNAP I/O unit that has any channel from 31 to 63 set to ON in the From argument, you may receive the following incorrect values:

2,147,483,647
2,147,483,648

Additionally, you may encounter an overflow (-13) error in the control engine’s message queue.

Workaround:

Specify a 64-bit integer variable for the Put In argument or use the Get the I/O Unit as Binary Value 64 command.

Resolution:

Opto 22 is investigating this issue.

Questions?

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

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