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KB84812
Analog minimum value request in PAC Display or OptoOPCServer returns maximum value
Revision:  2.0
Published:  4/1/2016
Applies To
SNAP-PAC-S1
SNAP-PAC-S1-FM
SNAP-PAC-S1-W
SNAP-PAC-S2
SNAP-PAC-S2-W
SNAP-PAC-R1
SNAP-PAC-R1-B
SNAP-PAC-R1-FM
SNAP-PAC-R1-W
SNAP-PAC-R1
SNAP-PAC-R2
SNAP-PAC-R2-FM
SNAP-PAC-R2-W
SOFTPAC
Versions
Problem affects versions:  
Firmware R9.4b-R9.4c
Problem is fixed in version:  
Firmware R9.5a

SYMPTOMS

In PAC Display or OptoOPCServer, when you request an analog point's minimum value via the controller, you receive instead the current analog maximum value. Reading the value directly from the I/O unit is not affected.

WORKAROUND

In PAC Display, read the I/O data directly from the I/O (rather than through the controller). Or modify the strategy to retrieve the analog point's minimum value and store it to a float variable, and have PAC Display read the data from the variable.

OPC client users should read the value directly from the I/O unit by using the MMIO scanner.

RESOLUTION

Opto 22 has resolved this issue.

Relevant Downloads
No relevant downloads have been specified.
Questions? Contact Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com

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