KepServerEX and Modicon M211 Modbus TCP Problem

hi All,

I am using KepServer EX V4.0 to read and write network objects ( %IWMx & %QWMx) of M221 PLC via Mobus TCP but it does not succeed although quality show good on OPC client meaning value of registers was changed in OPC client but it did not change in PLC program and vice versa. The unit ID of M221 is 247 and same for device ID in KepSever. Please see attached screenshots of configuration and advise.

Thanks so much in advance

Kind regards,

Steven