I am trying to get Siemens 1214c dc/dc/dc cpu work as a Modbus RTU slave with RS232 communication module. As a master i have PC.
I tried to get the connection work according these instructions:
https://support.industry.siemens.co...ortal)-for-the-simatic-s7-1200?dti=0&lc=en-WW
I didn't create the mb_master-block, since I don't have two PLCs communicating. As i try to send data to PC I only get errorsignal from mb_slave bloc, announcing about invalid port id (code 8180). The port id is the same as it is in the port configuration, so I really don't understand this. Could someone please help me to understand why my connection is not working?
I tried to get the connection work according these instructions:
https://support.industry.siemens.co...ortal)-for-the-simatic-s7-1200?dti=0&lc=en-WW
I didn't create the mb_master-block, since I don't have two PLCs communicating. As i try to send data to PC I only get errorsignal from mb_slave bloc, announcing about invalid port id (code 8180). The port id is the same as it is in the port configuration, so I really don't understand this. Could someone please help me to understand why my connection is not working?