Mitsubishi Electric RD77GF8 User Manual page 32

■Example of interlock using devices other than X and Y
An example of sending data in W0 to W3 of the master station (station No.0) to W1000 to W1003 of the local station (station
No.1) is shown below. This is a method used when X and Y cannot be used as interlock devices. (B0 and B1000 are used for
a handshake to the CPU module.)
Sending station
• Data flow
Send
request
Send data (W)
SET B0
• Program
Program example
Sending station: Master station (station No.0)
Classification
Label to be defined
1 FUNCTIONS
30
1.3 Cyclic Transmission
CPU Master
module station
W0
B0
W1000
B1000
Description
Define global labels as shown below:
Receiving station
Local
station
RWw0 RWw0
RWw3F0 RWw3F0
RWr0 RWr0
RWr3F0 RWr3F0
CPU
module
W0
B1000
B0
W1000
Cyclic transmission
B1000
Link refresh
Receive data (W)