Mitsubishi MELSEC LJ71C24, User Manual

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1 SERIAL COMMUNICATION MODULE FUNCTIONALITY
1 SERIAL COMMUNICATION MODULE FUNCTIONALITY
The C24 performs data communication with another device connected by an RS-232
or RS-422/485 line, using any of the following four protocols.
Through a modem or terminal adapter, a public line (analog/digital) can be used for
data communication with a remotely located device.
(1) MELSEC Communication protocol (hereinafter referred to as MC
protocol)
Data can be read from or written into the CPU module device memory from the
other external device.
Use this protocol when controlling the operation of CPU modules from the
external device side.
Refer to the MELSEC-Q/L MELSEC Communication Protocol Reference Manual
for the details.
ENQ Command Characters
Sam
check
code
ETX STX Characters
Sam
check
code
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