The error state is active for one scan. Consider capturing the value of the STATUS pin when the ERROR pin goes high. The value in the STATUS pin will give you an idea where to look for the problem.

Also have only one Master block active until you are sure you have communications.

Note that the communication settings on the device will probably only take effect after the device has been powered up again. The settings on the PLC should match the settings set on the slave device.

qwazee

The error state is active for one scan. Consider capturing the value of the STATUS pin when the ERROR pin goes high. The value in the STATUS pin will give you an idea where to look for the problem.

Also have only one Master block active until you are sure you have communications.

Note that the communication settings on the device will probably only take effect after the device has been powered up again. The settings on the PLC should match the settings set on the slave device.

 I followed those instructionhttps://plc247.com/siemens-s7-1200-modbus-rtu-delta-vfd-m-tutorial/
and i did many changes in both plc and vfd to any effects but steal not working
i changed the modbus types and the start adresses and many ather parameters but no resaults

something to mention is that when i activate one of the MB_master the Tx keep blinking