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Appendix G
Making the Cable for Connection to a Bar
Code Reader
Refer to the following when making the cable for connection to a bar code reader.
Wiring Method
When using the +5 V output of serial port A of the NT631/NT631C, limit the cable length to within 2 m. If a
cable longer than 2 m is used, connect an external power supply to the bar code reader.
Connector and Related Parts
Use the parts which are specified by bar code reader and following recommended products when making the
connecting cable.
Bar code reader side
Abbr. Pin No.
1
SD 2
RD 3
RS 4
CS 5
+5 V 6
7
8
SG 9
NT631/NT631C side
Abbr.
SD
RD
RS
CS
ER
SG
+5 V
RS-232C
interface
Name Model Remarks
Connector XM2A-0901 9-pin type, made by OMRON, PT side
Connector hood XM2S-0911 9-pin, made by OMRON
Cable AWG28×5P IFVV-SB Multi-core shielded cable, made by Fujikura Ltd.
CA-MA-VV-SB 5P×28AWG Multi-core shielded cable, made by Hitachi Cable, Ltd.