Omron FH series User Manual page 36

1
When the first data is received, the user (PLC) turns ON the measurement trigger and
the DSA signal.
2
The Sensor Controller turns ON the GATE signal when the DSA signal is turned ON and
outputs the first data.
3
The user (PLC) turns OFF the DSA signal again when the GATE signal turns ON. Then,
the user (PLC) confirms the output data received in the PLC Data Output Area and
moves the received data to another area in PLC I/O memory.
4
The Sensor Controller confirms that the DSA signal is OFF and automatically turns OFF
the GATE signal.
5
The user (PLC) then turns ON the DSA signal again after the output data is received and
the GATE signal is turned OFF, and waits for the second data.
6
When the second data is output, the second data output is received when the GATE
signal is turned ON and steps 3 and 5 above are repeated.
Steps 3 through 5 above are repeated for all subsequent data output items.
34
Control Methods Using an External Device Vision System FH/FZ5 Series User's Manual
for Communications Settings (Z342)