Published: September 18, 2020
Analog input channels with non-zero offset calibration show incorrect values
2.0.0 to 2.0.1
Resolved In Version:
If you configure an analog channel to report degrees Fahrenheit and set offset to any value other than zero, the channel value will have an offset error proportional to 5/9ths the desired offset. This applies whether you configure I/O through:
- groov Manage (from the groov Manage Home page, click I/O Channels, then the channel number)
- PAC Control (in the Edit Analog Point window, in the Send Values group)
Configure a channel as an ICTD type and connect a probe. If the room temperature is 75 degrees Fahrenheit, then after setting the offset to 10, the expected channel value is 85 degrees Fahrenheit; however, the value reads 80.55 degrees Fahrenheit.
Compensate for the 5/9ths applied offset by multiplying the intended offset first by 9/5, then enter that value into PAC Control or groov Manage.
Opto 22 has resolved this issue.
Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
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