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Sample Ladder Programming for Mitsubishi Electric PLC Q series
This section provides an example of programming to monitor Safety Input terminal
data of a G9SP-series Controller from a Mitsubishi Electric Standard PLC Q
series.
z Ethernet Communications Sequence
The G9SP-series Controller returns a response to the command sent from the
Standard PLC.
Standard PLC G9SP-series Controller
Send processing
Initialization
Send/receive processing
Send/receive processing
Sent command
Reception response
Sent command
Reception response
Receive processing
Send processing
Receive processing
Send processing
Receive processing
after 300 ms
Receive processing
after 300 ms
Receive End
Receive End
z Mitsubishi Electric Standard PLC Q series Memory Allocations
Start address End address Contents Description
D300 D312 Ethernet send command Data sent by the Standard PLC to the G9SP-series
Controller.
D500 D603 Ethernet reception response Data received by the Standard PLC from the G9SP-
series Controller.
D3000 - BUFSND instruction control
data
Control data for the BUFSND instruction is stored.
D5000 - BUFRCV instruction control
data
Control data for the BUFRCVinstruction is stored.
X100 X11F G9SP communications rece-
ption data (written to G9SP-
series Controller)
Data written to G9SP-series Controller from Standard
PLC. Stored in the communications reception data of the
G9SP-series Controller.
Y200 Y21F G9SP communications
transmission data (read from
the G9SP-series Controller)
Communications data sent from the G9SP-series
Controller is read.
Y220 Y24F G9SP Safety Input terminal
data (read from the G9SP-
series Controller)
Safety Input terminal data of the G9SPseries
Controller is read.
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