Omron FH series User Manual page 20

2
Command/Response Method (Refer to
Control is performed by storing the control command and the response to that command in the I/O
memory of a PLC.
This method is best suited to send multiple commands to the Sensor Controller without using PLC
communications instructions.
External device
I/O memory
Command Area
Response Area
Output Area
3
Data Output after Measurements (Refer to
After a measurement is executed, the measurement data specified for output is automatically output to the
specified words in the I/O memory of the PLC.
This allows you to output measurement results from the Sensor Controller to the PLC automatically
without having to send data requests from the PLC.
External device
I/O memory
Command Area
Response Area
Output Area
18
Communicating with an External Device
Command/Response Method (p.25))
Sensor Controller
(1) Command
(2) Command
execution
(3) Response
Sensor Controller
(2) Measurement data
(1) Measurement processing
Data Output after Measurements (p.26))
Vision System FH/FZ5 Series User's Manual
for Communications Settings (Z342)