Mitsubishi FX2N-16CCL-M, User Manual

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FX2N-16CCL-M CC-Link System Master Block Functions 5
5-9
5.4 Communication in Compound System
This section describes the overview of the communication in the system in which remote I/O
stations and remote device stations exist together.
[Data link startup]
1) The PLC sets to ON the write refresh command (BFM#A
H
b0), and makes the data of the
remote output (RY) effective.
When the write refresh command (BFM#A
H
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 (BFM#A
H
b8) by EEPROM parameters to
start the data link.
However, parameters should be registered in the EEPROM in advance.
When the data link starts normally, the read data link status in host station (BFM#A
H
b1)
turns ON.
Point
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 Master station
Refresh command
Data link startup by
EEPROM parameters
Remote I/O station
(station No. 1)
SET
FROM
TO
M
M
BFM#A
H
b0
SET
Remote input (RX)
Receive area for data
from remote I/O station
(station No. 1)
BFM#A
H
b8
Input
1)
2)
4)
5)
3)
TO
FROM
7)
10)
Receive area for data
from remote device
station (station No. 2)
Buffer memory
Remote output (RY)
Transmission area for
data to remote I/O
station (station No. 1)
Transmission area for
data to remote device
station (station No. 2)
Remote register (RWw)
Prohibited to use
(station No. 1)
Transmission area for
data to remote device
station (station No. 2)
Remote register (RWr)
Prohibited to use
(station No. 1)
Receive area for data
from remote device
station (station No. 2)
3)
Remote device station
(station No. 2)
Remote input
(RX)
Output
6)
Remote output
(RY)
Remote register
(RWw)
Remote register
(RWr)
6)
8)
9)
FROM
4)
TO
5)