Modbus RTU URBE application

I have running a application modbus RTU Master Slave SCADA -PLC, the PLC has diver Modbus slave. Now I want to add the funcion URBE Unsolicited Report By Exception to PLCs telemecanique STX Micro using lader language, The idea it is manage the interface RS232 TSXCSP111 with commands in my program ladder.

someone could tell me which commands support the interface TSXSCP111.

If someone ahve had any expirence in similar applications, please send me information or contacts.

Thanks so much