Communication Between Master Station And Remote I/O Stations - Mitsubishi FX2N-16CCL-M User Manual

FX2N-16CCL-M CC-Link System Master Block
5.2

Communication between Master Station and Remote I/O Stations

This section describes the overview of the communication between the master station and
remote I/O stations.
[Data link startup]
1) The PLC sets to ON the write refresh command (BFM#A
remote output (RY) effective.
When the write refresh command (BFM#A
treated as "0 (OFF)".
2) The PLC sets to ON the write data link startup by EEPROM parameters (BFM#A
start the data link.
However, parameters should be registered to the EEPROM in advance.
When the data link starts normally, the read data link status in host station (BFM#A
turns ON.
The data link can be started also from the parameters written in the "parameter
information area" in the buffer memory. (Refer to Chapter 7.)
PLC
➀
SET M
BFM#A b0
H
➁
SET M
BFM#A b8
H
➃
FROM
➄
TO
Point
Master station
Refresh command
Data link startup by
EEPROM parameters
Buffer memory
Remote input
Link scan
(RX)
Remote output
Link scan
(RY)
b0) is OFF, all data of the remote output (RY) is
H
Remote I/O station
➂
Input
➅
Output
b0), and makes the data of the
H
Functions 5
b8) to
H
b1)
H
5-2