Introduction To Rs-232C Connections - Omron FQ2-S/CH Series User Manual

4-1 Introduction to RS-232C Connections

FQ2-S3 FQ2-S4
You can connect an RS-232C Interface Sensor Data Unit to the I/O cable connector on the FQ2.
If you connect a Sensor Data Unit, you can use no-protocol communications to send and receive commands,
inspection item parameters, and other data between the Sensor and the external control device that is
connected with the RS-232C cable.
Refer to the following sections for the specifications and wiring methods of the RS-232C Interface Sensor Data
Unit:
Section 2 Installation and Connections
in Sensor FQ2-S/CH Series User's Manual (Cat. No. Z337)
Note
Parallel Input Signals for an RS-232C Interface Sensor Data Unit
• Specifications for parallel communications is basically the same whether RS-232C Interface Sensor Data Unit is
connected, or not.
Connection: p.34
However, specifications for the parallel I/O signals will change as given below in comparison with the standard
parallel communications of the Sensor when RS-232C Interface Sensor Data Unit is connected.
• ACK Signals
You can use the ACK signal in the parallel outputs. Refer to the following section for the specifications of the ACK
signal.
Setting the Output Time of the ACK Signal: p. 74
• Assignment signal and Polarity
You can not change the assignment of signal when RS-232C Interface Sensor Data Unit is connected, but you
can change the output polarity of signals.
Changing the Output Polarity of the Output Signals: p. 73
202
Introduction to RS-232C Connections
FQ2-CH
External device
RS-232C
2-1 Controlling Operation and Outputting Data with the Sensor's Standard Parallel
Sensor Data Unit
Sensor Data Unit cable
Sensor
FQ2-S/CH User's Manual
for Communications Settings