Hey, i need to connect a PC to a S7-200 PLC to store a value that i will read in excel or something.
going to use a laptop straight to the PLC,
going to have 1 analog input and 1 analog output and when the value is same on bout it will write to PC,
I was told that i need a OPC server and a PPI cable to do that,
and siemens got PC access or someting to do that,
is there any other OPC server prog. and for free?
and what is modbus? serching the forum and was reading about that but dont get it what it´s, can it be something for me?
going to use a laptop straight to the PLC,
going to have 1 analog input and 1 analog output and when the value is same on bout it will write to PC,
I was told that i need a OPC server and a PPI cable to do that,
and siemens got PC access or someting to do that,
is there any other OPC server prog. and for free?
and what is modbus? serching the forum and was reading about that but dont get it what it´s, can it be something for me?