Rs-232C Port - Omron CQM1 Operation Manual

Wiring and Connections

2-5-9 RS-232C Port

RS-232C Connections
RS-232C Specifications
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5
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The RS-232C port on the CQM1-CPU21-E/4j-EV1 can be connected to vari-
ous devices for communications with the PC via PORT INPUT and PORT OUT-
PUT instructions or for automatic data links with other CQM1 PCs (also
CQM1-CPU21-E/4j-EV1), as shown in the following diagram.
Host link
Personal computer
PT
The specifications for the RS-232C port are given below. Devices that meet
these specifications can be connected.
Connector Pin Assignments
Pin assignments for the RS-232C port are given in the following table.
Pin
1 FG
2 SD (TXD)
6
3 RD (RXD)
4 RS (RTS)
5 CS (CTS)
9
6 ---
7 ---
8 ---
9 SG
Connector fitting FG
RS-232C
Printer
Bar Code Reader
Abbreviation
Field ground
Send data
Receive data
Request to send
Clear to send
Not used.
Not used.
Not used.
Signal ground
Field ground
Section 2-5
1 to 1 link
CQM1-CPU21-E/4j-EV1
Name Direction
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Output
Input
Output
Input
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