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MELSEC-Q
6 PROGRAMMING
6.3 Communications with I/O Modules
This section describes the setting and programming that are required for a CPU to
communicate with I/O modules on a remote I/O station by cyclic transmission.
(1) System configuration example
Remote master station
Remote I/O station (station No. 1)
Power
supply
QCPU QJ71
BR11
QJ72
BR15
QX40
QY40PPower
supply
(2) Program conditions
The following processing is performed in the program.
• An input from X0 of the remote I/O station turns ON M1000.
• When M2000 is turned ON, a signal is output to Y0 of the remote I/O station.
(a) Devices used by the user
• Input flag from X0 of remote I/O station ········· M1000
• Output flag to Y10 of remote I/O station ········ M2000
(3) Parameter setting example
(a) Setting for the CPU module of the remote master station
Set network parameters in GX Developer.
• Network type : MNET/H (Remote master)
• Starting I/O No. : 0000
H
• Network No. : 1
• Total stations : 1
• Mode : Online
• Network range assignment:
• Refresh parameters:
(b) Setting for the remote I/O module
Use the default settings. (Refer to Section 5.2.1.)
(4) Program example
Input from remote I/O station X0.
Output to remote I/O station Y10.