Controller remote diagnostics/troubleshooting

[mifrey00]

It would be good to have a way to monitor/troubleshoot the controller without being in front of the controller to see the LEDs.

Example of useful diagnostics:

• Controller in failsafe mode or in server mode (LED USR)
• IO modules status
• ...

The diagnostics should not be done through Calaos server to be able to diagnose the controller failsafe mode (no communication with Calaos server). One way to do this would be to read the controller registers with MODBUS (for example with Python pymodbus). The failsafe mode could be diagnosed by reading the global variable LedMode but it is apparently not possible with the current Wago program.