Features - Mitsubishi Electric MELSEC IQ-R series Reference Manual

1.2

Features

Communication from external device without using sequential programs
The programmable controller transmits data in accordance with the commands from an external device. Thus, a program for
data communication is not required for CPU module. (When using on-demand functions with C24, a sequence program for
data communication from CPU module is required.)
Communication protocols of C24/E71
The message formats and control procedures for an external device to access a programmable controller are defined for each
supported device.
External device
100
Control
codes
Control
codes
Accessible via various network
By using MC protocol, accessing other station via various network can be performed seamlessly.
External device
Connected station
Read/write
Request message
Frame ID No. Access route
Frame ID No.
Access route
Response message
other stations
Multidrop connection
Network
No.1
other stations
(Host station)
Supported device
100
Request data
Response data
other stations
Network
No.n
(Relay station)
Access range
1 ABILITY OF MC PROTOCOL
Multidrop connection
(Relay station) other stations
1.2 Features
1
19