Controller communications fail even when the correct default gateway IP address is set (which changes when viewed later!).


Using the Pocket Terminal 32 utility to set the UNC532 default gateway via the command GW and then set the node configuration using the SDCU.  Communications from the Sigma server to the controller failed.  On checking the default gateway it had changed to

Product Line

Satchwell Sigma


Sigma (All versions)




Using SDCU to write the controller node configuration wrongly changes the previously set default gateway IP address.


Configure the controller first using SDCU and then set the default gateway IP address using Pocket Terminal 32.  Similarly, if any changes are made by SDCU then the default gateway IP address must be re-entered. 

The SDCU utilities is available for download.