Hemlock
Member
Hello all,
I've been reading a lot to try to get up to speed with my first PLC project. I'm having some trouble establishing communication between a computer and the PLC over ethernet. For the application I will need to accept comms from a computer and toggle outputs in response, as well as pass info on the status of other input bits back to the computer.
I have worked up some simple ladder code, and can get the PLC to run a timer and set outputs in response to changing inputs. From what I've read I think that modbus TCP should do what I need, and have modbus TCP enabled on channel 1, but haven't been able to get it working. If anyone has detailed instructions for how to set this up to get basic comms to a terminal program such as hyperterminal I'd be most grateful.
Pointing me to some good examples to read over would also be fine.
I've been reading a lot to try to get up to speed with my first PLC project. I'm having some trouble establishing communication between a computer and the PLC over ethernet. For the application I will need to accept comms from a computer and toggle outputs in response, as well as pass info on the status of other input bits back to the computer.
I have worked up some simple ladder code, and can get the PLC to run a timer and set outputs in response to changing inputs. From what I've read I think that modbus TCP should do what I need, and have modbus TCP enabled on channel 1, but haven't been able to get it working. If anyone has detailed instructions for how to set this up to get basic comms to a terminal program such as hyperterminal I'd be most grateful.
Pointing me to some good examples to read over would also be fine.