Omron CP1H-X40D Operation Manual page 760

Connections to Serial Communications Option Boards
1:1 Connections Using RS-422A/485 Ports
CPU Unit
Signal Pin
RS-422A
/485
Option
Board
Terminal block
CPU Unit
Signal Pin
RS-422A
/485
Option
Board
Terminal block
726
Device supporting
RS-422A/485
communications
(2-wire)
Serial Communications Board/Unit
Signal
Shield
RS-422A
/485 in-
terface
NT-AL001 Link Adapter
RS-422A
Shield
Pin Signal Signal Pin
D-sub, 9-pin
connector (male)
DIP Switch Settings
Pin 1: ON
Pin 2: ON
(terminating resistance)
Pin 3: OFF
Pin 4: OFF
Pin 5: OFF
Pin 6: OFF
Signal Pin
Shield
RS-422A
/485 in-
terface
Terminal block
Computer
Signal
RS-232C
RS-422A
/485 in-
terface
5-V (+)
power (-)
Appendix F
Device supporting
RS-422A/485
communications
(4-wire)
Signal
RS-422A
/485 in-
terface