ET 200S Modbus Master Communication.

I want to connect my ET 200S CPU(6ES7-151-8AB01-0AB0) and 1SI (6ES7-138-4DF11-0AB0) to an Energy Meter L&T Make Model Quaser. and its data from (Input Coil: 30001 to 30005).

But all the Sample programs are for S7 CPU314 DP. Can anyone help me how to add the module and a sample program.

Thanks in advance.

Hello,

See the attached sample code for Modbus Master 1SI module.

Suggestion would be, 1st try with Modbus tester software *(eg Modview/Modscan) to check everything is working or not. Then only connect meter with 1SI module and check.

If you feel this post is useful then don't forget to rate.

DJ_1

Hello,

See the attached sample code for Modbus Master 1SI module.

Suggestion would be, 1st try with Modbus tester software *(eg Modview/Modscan) to check everything is working or not. Then only connect meter with 1SI module and check.

If you feel this post is useful then don't forget to rate.

 This program is for CPU with DP. But my 1SI Module is connected directly to ET200S without DP. and i only need to read Data from meter.

Hello,

Use same program. It should work. Cuase its same for S7300 and ET200S CPU.

If it not working then let me know.

I tried your program but it is not working. Also as i said earlier it is  required only to read value from Function Block 04.