Mitsubishi FX3U-16CCL-M User Manual

6 Introduction of Functions
6.2 Basic Functions
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FX3U-16CCL-M User's Manual
6.2.4 Communication in compound system
This section describes the overview of the communication in the system in which remote I/O stations, remote
device stations and intelligent device station exist together.
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
BFM#10 b0
SET
Remote input (RX)
BFM#10 b6
Input
1)
2)
4)
5)
3)
Buffer memory
3)
Remote device
station
Remote input
(RX)
Data link startup
Intelligent device
station
Remote input
(RX)
3)
Remote output (RY)
Output
6)
6)
Remote output
(RY)
Remote output
(RY)
6)
FROM
TO
7)
Remote register
(RWw)
8)
Remote
register
(RWw)
Remote
register
(RWw)
8)
TO
10)
Remote register
(RWr)
9)
Remote
register
(RWr)
Remote
register
(RWr)
9)
FROM
Link scan
Link scan
Link scan
Link scan
Link scan
Link scan
Link scan
Link scan
Link scan
Link scan
M
M

Mitsubishi FX3U-16CCL-M Specifications

General

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