Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 612

Connecting to the RS-232C Port on the CPU Unit
• Wiring with XW2Z-@@0T-1 (10 Conductors)
CPU Unit
Signal Pin
name No.
1 FG
2 SD
3 RD
4 RS
5 CS
6 5V
7 DR
8 ER
9 SG
Shell FG
Note 1. Do not use the 5-V power from pin 6 of the RS-232C port for anything but the NT-AL001/CJ1W-CIF11
Link Adapter, or NV3W-M@20L Programmable Terminal. Using this power supply for any other exter-
nal device may damage the CPU Unit or the external device
2. The XW1Z-@@0T-1 Cable is designed to connect the NT-AL001 and contains special wiring for the
CS and RS signals. Do not use this cable for any other application. Connecting this cable to other
devices can damage them.
Duplex Connections to Standby and Active CPU Units for Continuous Communications when
Switching to Simplex Operation with Duplex CPU Systems
RS-232C
NT-AL001 terminating
resistance ON, 5-V
power required
CJ1W-CIF11 (RS-232C/
RS-422A/485 Adapter)
Actual wiring is the same as 1:1 connections for duplex connects to both CPU Units.
DIP Switch Settings on the NT-AL001 Link Adapter
There is a DIP switch on the NT-AL001 Link Adapter that is used to set RS-422A/485 communications param-
eters. Set the DIP switch as required for the serial communications mode according to the following table.
Pin
1 Not used. (Leave set to ON.)
2 Internal terminating resistance setting.
ON: Terminating resistance connected.
OFF: Terminating resistance not connected.
3 2-wire/4-wire setting
Both pins ON:
4
Both pins OFF:
5 Communications mode (See note.)
Both pins OFF:
6
5 OFF/6 ON:
5 ON/6 OFF:
Note 1. Turn OFF pin 5 and turn ON pin 6 when connected to a CS-series CPU Unit.
2. The CJ1W-CIF11 does not provide isolation. The total length of the transmission path must therefore
be 50 m or less. If the transmission distance is greater than 50 m, use the NT-AL001, which provides
isolation, and do not include the CJ1W-CIF11 in the transmission path. When only the NT-AL001 is
used, the total length of the transmission path can be a maximum of 500 m.
576
NT-AL001
Arrows indicate
Signal Pin
signal directions
name No.
1
RD 3
SD 2
RS 4
CS 5
5V 6
DR 7
ER 8
SG 9
FG Shell
Shield
RS-422A/485
D D
P P
L L
CJ1W-CIF11 (RS-232C/
RS-422A/485 Adapter)
2-wire communications
4-wire communications
Always send.
Send when RS-232C's CS is high.
Send when RS-232C's CS is low.
Returned
Returned
CJ1W-CIF11 Adapters are
connected to all CPU Units
(active and standby). (See note 2.)
Function
Appendix F
Default setting
ON
ON
OFF
OFF
ON
OFF