Connecting To A Serial Port On The Cpu Unit; Cpu Unit Built-In Rs-232C Interface Specifications; A-4-1 Serial Port Interface Types And Specifications - Omron CJ2 CPU UNIT User Manual

A-4 Connecting to a Serial Port on the
CPU Unit
This appendix provides information on configurations and wiring methods when connecting various
functionality to a serial port on a CPU Unit.
A-4-1 Serial Port Interface Types and Specifications
With the following configurations, the serial port on a CJ2 CPU Unit can be used with an RS-232C or
RS-422A/485 interface. In this appendix, serial ports on CPU Units with these interfaces are called RS-
232C ports and RS-422A/485 ports.
Interface
Model
CJ2H-CPU6@(-EIP)
CJ2M-CPU1@
CJ2M-CPU3@
RS-232C Interface Specifications

CPU Unit Built-in RS-232C Interface Specifications

• Connector Pin Arrangement
Pin No.
1
2
3
4
5
6
7
8
9
Connector hood
CJ2 CPU Unit Hardware User's Manual
RS-232C
Built into the CPU Unit as
a standard feature.
A CP1W-CIF01 RS-232C
Option Board is mounted.
Signal
FG Protection earth
SD (TXD) Send data
RD (RXD) Receive data
RS (RTS) Request to send
CS (CTS) Clear to send
5 V Power supply
DR (DSR) Data set ready
ER (DTR) Data terminal ready
SG (0 V) Signal ground
FG Protection earth
RS-422A/485
Not isolated
A CJ1W-CIF11 RS-422A
Converter is mounted directly
to the built-in RS-232C inter-
face.
A CP1W-CIF11 RS-
422A/485 Option Board is
mounted.
Name Direction
---
Output
Input
Output
Input
---
Input
Output
---
---
Appendices
Isolated
The built-in RS-232C inter-
face and an NT-AL001 RS-
232C/RS-422A Link Adapter
are connected with a cable.
A CP1W-CIF12 RS-
422A/485 Option Board is
mounted.
6
9
5
A-111