Omron FQ2-S Series User Manual page 72

Outputting Measurement Results for Data Send Requests from the External Device (Handshaking)
With handshaking, measurement results are output after there is a data send request (DSA signal) from the
external device.
Handshaking is effective for sequentially outputting many measurement results and it is a reliable way to
transfer data.
External device
(1) DSA signal sent.
*1 The overall judgement (OR) is output even if the DSA signal is not output by the external device.
●
DSA Signal
The DSA signal is used by the external device to request the next data transmission. The Sensor will not output
data until the DSA signal is turned ON. When the external device is ready for reception, turn ON the DSA
signal.
70
Controlling Operation and Outputting Data with a Parallel Interface Sensor Data Unit
FQ2
(2) Measurement
*1
results output.
FQ2-S/CH User's Manual
for Communications Settings