IC or Gateway returning default values. Modbus, SNP, Unifact.

[Product_Support]

Issue

IC or Gateway returning default values.

Modbus, SNP, Unifact.

Environment

Sigma IC's and IC3's, BAS PIU's.

Modbus

SNP

Unifact

Cause

In Sigma the following is displayed:

Note the default value displayed will be the default value set within the object.

Resolution

There are a number of causes:

1. Ensure that no additional spaces have been inserted. Select all of the gateway.txt with the cursor to reveal any extra spaces.
   
2. Separators within the input and output fields should be a comma (,).
   
3. User comments e.g. "Temperature Sensor", "Setpoint" at the end of a input or output line are commented out using a semicolon (;).
   
4. In some gateway.txt the IC/PIU communications need to be set e.g. Modbus. Make sure these match the 3rd party's network.
5. In the Modbus IC, ensure the gateway.txt is set to modbus or crompton as required.

To simplify the problem solving process:

1. Use one gateway.txt entry and one connected controller on the 3rd party's network
2. Disconnect the remainder
3. Choose a mapped point in the 3rd party controller with a known value.
4. Once working, the remainder of the controllers can be added along with the points to be mapped.