Omron SYSMAC CQM1-ID212 - Page 49

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RS-232C Specifications 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 Abbreviation Name Direction
1 FG Field ground ---
2 SD (TXD) Send data Output
3 RD (RXD) Receive data Input
4 RS (RTS) Request to send Output
5 CS (CTS) Clear to send Input
6 --- Not used. ---
7 --- Not used. ---
8 --- Not used. ---
9 SG Signal ground ---
Connector fitting FG Field ground ---
Connections
The connections between the CQM1 and a personal computer are illustrated
below as an example.
1
2
3
4
5
6
FG
SD
RD
RS
CS
–
–
–
SG
7
8
9
1
2
3
4
5
6
7
8
9
SD
RD
RS
CS
DSR
SG
–
9
DTR
CQM1 Personal Computer
SignalPin
No.
Signal Pin
No.
Shielded cable
–
Applicable Connectors
The following connectors are applicable. One plug and one hood are included
with the CPU Unit.
Plug: XM2A-0901 (OMRON) or equivalent
Hood: XM2S-0901 (OMRON) or equivalent
Port Specifications
Item Specification
Communications method Half duplex
Sync Start-stop
Baud rate 1,200, 2,400, 4,800, 9,600, or 19,200 bps
Transmission method Point to point
Transmission distance 15 m max.
Interface EIA RS-232C
Wiring and Connections
Section 2-5
5
1
9
6
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