Omron NT31 Operation Manuals page 114

Connecting to the Host's RS-232C Port
NT-AL001 side
6
1
RS-232C
connector
9
5
When there is no +5 V output at the PC side
When there is +5 V output at the PC side
- When using the host link or NT link (1:1) method, short the RS and CS termi-
nals at the PC side with each other (leave the RS and CS terminals at the NT-
AL001 side open).
- When using the NT link (1:N), cross-connect the RS and CS terminals at the
NT-AL001 and PC sides.
If there is +5 V output at the PC side, no external power supply is required for
the NT-AL001.
S Wiring for a Memory Link connection
Prepare the adapter cable while referring to the diagram shown below.
NT-AL001 side
6
1
RS-232C
connector
9
5
Since it is necessary to input a voltage of +5 V to the number 6 pin of NT–AL001,
supplying a voltage of 5 V from the host or an external voltage supply for NT–
AL001 is required.
Abbreviation Pin number
Connector
FG
hood
−
1
SD 2
RD 3
RS 4
CS 5
+5V 6
−
7
−
8
SG 9
Shielding wire
(9-pin type)
Abbreviation Pin number
Connector
FG
hood
−
1
SD 2
RD 3
RS 4
CS 5
+5V 6
−
7
−
8
SG 9
(9–pin type) Shielding wire
No +5 V output is at the host side
A +5 V output is present at the host side
Section 5-1
PC side
1
Pin number
Abbreviation
Connector
FG
hood
−
1
2
SD
RS-232C
connector
3
RD
4
RS
5
CS
6
(+5V)
−
7
−
8
9
SG
(9-pin type)
5
When using host link or NT link (1:1)
When using NT link (1:N)
Host side
Abbreviation
Connector
hood
SD
RS-232C
RD
connector
RS
CS
(+5V)
SG
6
9
103