Panasonic FP0R - Command and Response; MEWTOCOL-COM Sketch

7-8
7.4.2 MEWTOCOL Slave Function
Outline of operation
Command and response
- Instructions issued by the computer to the PLC are called commands.
- Messages sent back to the computer from the PLC are called responses. When the PLC receives a
command, it processes the command regardless of the sequence program, and sends a response
back to the computer. On the computer side, the execution result of the command can be confirmed by
the transmitted response.
MEWTOCOL-COM sketch
- Communication is carried out in a conversational format, based on the MEWTOCOL-COM
communication procedures.
- Data is sent in ASCII format.
- The computer has the first right of transmission.
- The right of transmission shifts back and forth between the computer and the PLC each time a
message is sent.