Omron G9SP Series Manual page 22

Sample Ladder Programming for Mitsubishi Electric PLC FX 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 FX
series.
RS-232C Serial Communications Sequence
The G9SP-series Controller returns a response to the command sent from the
tandard PLC.
Receive processing
after 300 ms
Receive processing
after 300 ms
Mitsubishi Electric Standard PLC FX series Memory Allocations
Start address End address
D100 D108
D200 D298
D330 D336
X100 X11F
Y200 Y21F
Y220 Y24F
2-12
Standard PLC
Initialization
Send processing
Sent command
Reception response
Send processing
Receive processing
Sent command
Reception response
Send processing
Receive processing
Contents
RS-232C send command
RS-232C reception response
Checksum calculation work area
G9SP communications reception data
(written to G9SP-series Controller)
G9SP communications transmission
data (read from the G9SP-series Con-
troller)
G9SP Safety Input terminal data (read
from the G9SP-series Controller)
G9SP-series Controller
Send/Receive processing
Send/Receive processing
Data sent by the Standard PLC to the
G9SP-series Controller
Data received by the Standard PLC from
the G9SP-series Controller
Work area for RS-232C communications.
Used to calculate the check-sum
Data written to G9SP-series Controller from
Standard PLC. Stored in the communica-
tions reception data of the G9SP-series
Controller.
Communications data sent from the G9SP-
series Controller is read.
Safety Input terminal data of the G9SP-
series Controller is read.
Description