Mitsubishi FX3U-16CCL-M User Manual

6 Introduction of Functions
6.2 Basic Functions
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FX3U-16CCL-M User's Manual
6.2 Basic Functions
6.2.1 Communication between master station and remote I/O stations
This subsection describes the overview of the communication between the master station and remote I/O
stations.
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.
Data link startup
1) The PLC sets to ON the write refresh command (BFM#10 b0), and makes the data of the remote output
(RY) effective.
When the write refresh command (BFM#10 b0) is OFF, all data of the remote output (RY) is treated as "0
(OFF)".
2) The PLC sets to ON the write data link startup by buffer memory parameters (BFM#10 b6) to start the
data link.
When the data link starts normally, the read data link status in master station (BFM#10 b1) turns ON.
PLC Master station
Refresh command
Remote I/O station
SET
FROM
TO
BFM#10 b0
SET
Buffer memory
Remote input (RX)
Remote output (RY)
BFM#10 b6
InputLink scan
OutputLink scan
1)
2)
4)
5)
3)
6)
Data link startup
M
M

Mitsubishi FX3U-16CCL-M Specifications

General

Brand	Mitsubishi
Model	FX3U-16CCL-M
Category	Controller
Language	English