Mitsubishi Electric Melsec Q Series User Manual page 127

4 WHEN THE Q/LCPU ACCESSES THE PROGRAMMABLE CONTROLLER
OF ANOTHER STATION USING THE DATA LINK INSTRUCTION
Programmable
ZNRD
controller CPU
instruction
communication
D200
request
source
D201
station
D202
D203
D204
Programmable
controller CPU
D10
D11
ZNRD
D12
instruction
D13
communication
request
D14
designation
station
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(3) Program example
Read data from D10 to 14 of station 4 to D200 to 204 of station 1.
Write the data stored in D300 to 303 of station 2 to D50 to 53 of station 3.
Station 1
E71
Channel
1
E71
Station 4
(a) Program of station 1 (ZNRD instruction)
When I/O signals of Ethernet module are X/Y00 to X/Y1F
(b) Program of station 2 (ZNWR instruction)
When I/O signals of Ethernet module are X/Y00 to X/Y1F
Programmable
ZNWR
controller CPU
instruction
communication
request D300
source
D301
station
D302
D303
Network No.1
Programmable
controller CPU
D50
D51
ZNWR
D52
instruction
D53
communication
request
destination
station
MELSEC-Q/L
Station 2
E71
Channel
2
E71
Station 3
X19: Initial normal completion signal
Normal completion display
Error code
Error completion display
X19: Initial normal completion signal
Normal completion display
Error code
Error completion display
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