Omron CJ - 09-2009 Operation Manual page 704

Connecting to the RS-232C Port on the CPU Unit
1:N Connections via RS-232C Port
RS-232C
NT-AL001
terminating
resistance ON, 5-V
power required
Personal Computer
Shield
Signal
name
RS-232C
RS-232C
Interface
5-V (+)
power (–)
(See note 2.)
Note 1. We recommend using the following NT-AL001 Link Adapter Connecting Cables to connect to NT-
AL001-E Link Adapters.
XW2Z-070T-1: 0.7 m
XW2Z-200T-1: 2 m
The recommended cables should be wired as shown below. Each signal wire should be twisted with
the SG (signal ground) wire and placed in a shielded cable to prevent the effects of noise in noise-
prone environments. The 5-V wires can also be twisted with the SG wire to increase noise immunity.
656
RS-422A/485
NT-AL001
RS-232C RS-232C RS-232C
RS-232C ports
NT-AL001 Link Adapter
Signal Signal
Pin Pin
name name
No. No.
RS-422A
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
Terminating resistance ON
NT-AL001 Link Adapter
Signal Signal
RS-232C
Pin Pin
name name
No. No. (See
note 1.)
(See
note
2.)
D-sub, 9-pin connector
DIP Switch Settings
(male)
Pin 1: ON
Pin 2: OFF
Pin 3: OFF
Pin 4: OFF
Pin 5: OFF
Pin 6: ON
NT-AL001 Link Adapter
RS-232C
Pin Pin
Signal Signal
No. No. (See
name name
note 1.)
(See
note
2.)
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: ON
Appendix F
CPU Unit
Signal
Pin
name
No.
RS-232C
Interface
Communications Board/Unit
Pin
Signal
No.
name
RS-232C
Interface