Mitsubishi Electric MELSEC FX Series User Manual page 80

FX communication
3 ) Operation
a ) Start the computer program.
b ) Send four characters "ABCD" from the computer to the FX programmable controller.
c ) The FX programmable controller returns the four characters "ABCD" back to the
computer.
d ) The computer compares the data received from the programmable controller and the
original sent data, and displays a result message.
4 ) List of result messages
Received data is normal.
Data is not received at all or data content is
insufficient.
Error code 00H is received.
Received character is abnormal.
(0-th character)
Message Remedy
Data sending and receiving is normal.
Check again the writing, station No., transmission
specification, and transmission protocol.
Refer to error code list in chapter 12.
Check for faulty writing, observing writing cautions.
Computer link 7
7-20