Mitsubishi L26CPU-BT, User Manual

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8 - 8 8 - 8
8 FUNCTIONS
8.1.3 Communication with local stations
This section explains an overview of the communication between the master and local
stations.
(1) Communication between the master and local stations by cyclic
transmission
Data communication between programmable controller CPUs can be performed
in N:N mode using remote input RX and remote output RY (bit data used in local
station systems) as well as remote register RWw and remote register RWr (word
data for writing and reading used in local station systems).
Send area to
local station
No. 1
Receive area
from local
station No. 1
Network
parameters
Receive area
from local
station No. 2
Remote input RX
Remote register
RWw
Buffer memory
Remote register
RWr
Receive area
from master
station
Host station
(station number 1)
send area
Remote output RY
Remote input RX
Remote register
RWr
Buffer memory
Remote register
RWw
Network
parameters
Link scan Automatic refresh X
X
Y
Y
W
W
W
W
1)
4)
6)
6)
9)
9)
14)
14)
3)
7)
7)
10)
10)
13)
13)
Programmable
controller CPU
Master station
Local station
(station number 1)
Host station
(station number 2)
send area
Remote register
RWr
Remote register
RWw
X
X
Y
Y
W
W
W
W
1)
Local station
(station number 2)
4)
Link scan
3)
Link scan
3)
3)
7)
7)
10)
10)
13)
5)
2)
8)
8)
11)
11)
15)
12)
Remote output RY
13)
Automatic
refresh
parameters
Network
parameters
Network
parameters
Automatic refresh
to
Automatic refresh
Automatic refresh
Link scan
Link scan
Link scan
Link scan Link scan
Automatic refresh
Automatic refresh
Remote output RY
Buffer memory
Automatic
refresh
parameters
Automatic refresh
Automatic refresh
Receive area
from local
station No. 1
Receive area
from local
station No. 2
to to
Remote input RX
Send area to
local station
No. 2
Receive area
from master
station
Receive area
from master
station
Receive area
from master
station
to to to
Send area to
local station
No. 1
Send area to
local station
No. 2
Link scan Automatic refresh
Automatic refresh
Link scan
Link scan Link scan
Automatic refresh
Automatic refresh
Receive area
from master
station
Receive area
from master
station
Receive area
from master
station
Receive area
from master
station
to to to
Link scan
Automatic refresh
Automatic refresh
Link scan
Link scan
Link scan
Automatic refresh
Automatic refresh
Receive area
from local
station No. 1
Receive area
from local
station No. 2
to to to
Host station
(station number 1)
send area
Host station
(station number 2)
send area
Receive area
from local
station No. 1
Receive area
from local
station No. 2
Programmable
controller CPU
POINT
The master station sends only the data for the stations that are performing data link.
The data for the stations that are not performing data link are not sent.