Omron CP1H CPU

700
Connections to Serial Communications Option Boards Appendix F
1:1 Connections Using RS-422A/485 Ports
Signal
Pin
CPU Unit
RS-422A
/485
Option
Board
Device supporting
RS-422A/485
communications
(2-wire)
Serial Communications Board/Unit
Device supporting
RS-422A/485
communications
(4-wire)
Shield
Terminal block
Signal
Signal
Pin
Shield
Signal
5-V (+)
power (-)
D-sub, 9-pin
connector (male)
NT-AL001 Link Adapter
Signal
DIP Switch Settings
Pin 1: ON
Pin 2: ON
(terminating resistance)
Pin 3: OFF
Pin 4: OFF
Pin 5: OFF
Pin 6: OFF
Computer
RS-232C
Signal
Pin
RS-422A
/485 in-
terface
RS-422A
/485 in-
terface
Signal PinPin Signal
Shield
RS-422A
Terminal block
RS-422A
/485
Option
Board
RS-422A
/485 in-
terface
CPU Unit
Terminal block
RS-422A
/485 in-
terface