Hi all,
I have being trying in vein for the past 4 weeks to get a modbus master block to work on my IPC427. I have exhausted google search in attemptimg to get this to work.
Attached are the rungs from OB1 for modbus_com_load and modbus_master. I have trapped the done bit for modbus_com_load and this sets. Modbus_master will not set and the error rotates between 7001, 7002, 81E2. I have checked the comms settings in the hardware config and its correct.
At the end of the document is OB100 to set the com_rst bits for each block.
Can anyone give me some pointers on this?
Many thanks,
Barry.
I have being trying in vein for the past 4 weeks to get a modbus master block to work on my IPC427. I have exhausted google search in attemptimg to get this to work.
Attached are the rungs from OB1 for modbus_com_load and modbus_master. I have trapped the done bit for modbus_com_load and this sets. Modbus_master will not set and the error rotates between 7001, 7002, 81E2. I have checked the comms settings in the hardware config and its correct.
At the end of the document is OB100 to set the com_rst bits for each block.
Can anyone give me some pointers on this?
Many thanks,
Barry.