When using the 20k (Honeywell) thermistor type on a SmartStruxure IO Module, the temperature value does not change and reads an inaccurate value.
- IO Module
The 20k (Honeywell) thermistor type does not work properly in IO module firmware versions 2.009 and older.
The IO module firmware must be upgraded to the latest version. To check the firmware version of an IO module, see the below. For instructions on how to download the latest firmware version into an IO module, see Upgrading SmartStruxure IO Module Firmware.
SmartStruxure firmware can be downloaded from The Exchange Download Center.
How to Check an IO Module Firmware Version
- Select the module in the System Tree
- Click on the "Properties" tab
- Look for the Firmware version