I/O Unit and I/O points power up with default settings when the I/O unit is reset

Applies To:

SNAP-PAC-EB1
SNAP-PAC-EB1-FM
SNAP-PAC-EB1-W
SNAP-PAC-EB2
SNAP-PAC-EB2-FM
SNAP-PAC-EB2-W
SNAP-PAC-R1
SNAP-PAC-R1-FM
SNAP-PAC-R1-W
SNAP-PAC-R2
SNAP-PAC-R2-FM
SNAP-PAC-R2-W
SNAP-PAC-S1
SNAP-PAC-S1-FM
SNAP-PAC-S1-W
SNAP-PAC-S2
SNAP-PAC-S2-W
SOFTPAC
OptoEMU Sensor Update File

Versions Affected:

All versions through R9.3d
Problem is fixed in version: R9.3e

Resolved In Version:

Problem is fixed in version: R9.3e

Symptoms:

The analog and digital I/O points on an Ethernet-based I/O unit return incorrect data values, even though from PAC Control debug mode, communication to the I/O unit is enabled and no errors are reported. Digital output points (on 4-channel digital output modules) cannot be turned on or off. Using PAC Manager to inspect the I/O unit’s point configuration indicates all digital points are inputs and analog points are set to default configuration and scaling, even though other selections had been previously configured. Disabling and re-enabling communication to the I/O unit or stopping and starting the strategy does not correct the issue.

Workaround:

As part of commissioning a project, after the I/O has been configured, use PAC Manager to store each I/O unit’s configuration to flash by selecting, Tools > Inspect > Status Write > Store configuration to flash. By doing so, the I/O configuration resides on the I/O unit and is available should the unit reset or have power cycled to it.

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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