Control Methods For The Sensor - Omron FQ2-S Series User Manual

Type
Character output (FQ2-S4/CH
series only)

Control Methods for the Sensor

There are three methods that you can use to control the Sensor from a PLC or other external device. They are
described in this section.
For details on each control method, refer to their corresponding section.
Control Methods
Method Overview
Control signals and Operation is controlled by the
status signals ON/OFF status of the Mea-
surement Trigger Signal
(TRIG) and Command
Request Bit (EXE).
Control with com- Control is performed by send-
mands and ing control commands. The
responses execution results of the com-
mand can be confirmed in the
response from the Sensor.
Data output after After a measurement is per-
measurements formed, the previously speci-
fied measurement data is
output automatically.
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Control with Control Signals and Status Signals (Refer to
Status Signals: p.18)
Control and status confirmation for the Sensor is performed with the ON/OFF status of the control and
status signals.
This method is best suited for basic operations such as measurement triggers or to check the operating
status of the Sensor.
Trigger sensor
External device
FQ2-S/CH User's Manual
for Communications Settings
Description
You can output character strings and numbers that are read by inspection items
such as OCR, Barcode, 2D-code, or 2D-code (DPM). Refer to
Can Be Output as Output Data: p.22 for details.
You can also use commands to obtain results after a measurement is performed.
Trigger type or area
ON/OFF status of the control
signals and status signals
The control command code is
stored in the I/O memory of
the PLC and then the Request
Bit is turned ON.
Not required. (Output is per-
formed automatically after
measurement.)
Control signal
Status signal
Signals or area used
Control signals and status sig-
nals
PLC I/O memory (Command
Area and Response Area)
PLC I/O memory (Data Out-
put Area)
Control with Control Signals and
Sensor
Communicating with an External Device
Items That
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