Functions; Basic Functions; Communication With Remote I/O Stations - Mitsubishi LJ61BT11 User Manual

8 FUNCTIONS

This chapter explains the functions of the L series master/local module, dividing them
into three sections: "Basic Functions", "Functions for Improving System Reliability" and
"Handy Functions".

8.1 Basic Functions

This section explains the basic functions of the L series master/local module.

8.1.1 Communication with remote I/O stations

Programmable
controller CPU
Network
parameters
Automatic
refresh
parameters
X
Y
8 - 1
The following is an overview of the communication between the master station
and a remote I/O station using the remote I/O net mode.
In the communication with the remote I/O station, the on/off data of the switches
and indicator lamps are communicated through remote input RX and remote
output RY.
Master station
1)
Network
parameters
Buffer memory
3)
Remote input
Automatic refresh
4)
Remote output
Automatic refresh
[Data link startup]
1) When the programmable controller system is powered on, the network
parameters in the programmable controller CPU are transferred to the
master station, and the CC-Link system automatically starts up.
2)
Link scan
RX
5)
Link scan
RY
8 FUNCTIONS
Remote I/O station
Input
Output
8 - 1
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