A-119
Appendices
CJ2 CPU Unit Hardware User’s Manual
A-4 Connecting to a Serial Port on the CPU Unit
App
Wiring with XW2Z-@@0T-1 (10 conductors)
*2 When the NT-AL001 Link Adapter is connected to the RS-232C port on the CPU Unit, 5 V is supplied from pin
6, eliminating the need for a 5-V power supply.
Precautions for Correct UsePrecautions for Correct Use
• Do not use the 5-V power from pin 6 of the RS-232C port for anything but the NT-AL001 Link
Adapter, CJ1W-CIF11 RS-422A Converter, or NV3W-M@20L Programmable Terminals. Using
this power supply for any other external device may damage the CPU Unit or the external
device.
• 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.
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
parameters. Set the DIP switch as required for the serial communications mode according to the follow-
ing table.
Pin Function Default setting
1 Not used. (Leave set to ON.) ON
2 Internal terminating resistance setting.
ON: Terminating resistance connected.
OFF: Terminating resistance not connected.
ON
3 2-wire/4-wire setting
Both pins ON: 2-wire communications
Both pins OFF: 4-wire communications
OFF
4 OFF
5 Communications mode
Both pins OFF: Always send.
5 OFF/6 ON: Send when RS-232C's CS is high.
5 ON/6 OFF: Send when RS-232C's CS is low.
ON
6 OFF
Shell
Not
used.
Shield
Shell
Signal
name
Signal
name
Internal signals
Arrows indicate signal directions
Returned
Returned
Pin
No.
Pin
No.
PLC
NT-AL001
1
2
3
4
5
6
7
8
9
FG
SD
RD
RS
CS
5V
DR
ER
SG
FG
1
3
2
4
5
6
7
8
9
RD
SD
RS
CS
5V
DR
ER
SG
FG
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