Omron NT30 Operation Manual page 281

Making the Cable to Connect to the PC
S Wiring Connections
The NT30/30C does not use pin 4 (RS) or pin 5 (CS). Either short the RS and CS pins of the PC connector togeth-
er or set the CTS setting selector switch at the rear face of the Host Link Unit to "0V" (see < in the figure).
Connect the cable shield to the connector cover and pin 1 at the Host Link Unit end of the cable only.
NT30/30C
RS-232C
interface
Connecting an NT30/30C to a C-Series CPU Unit (CjjH)
S C-series CPU Unit (CjjH) 9-pin Connector Specifications
- Applicable CPU Unit:
- Electrical characteristics:
- Signal direction:
1
6
9
5
S Wiring Connections
The NT30/30C does not use pin 4 (RS) or pin 5 (CS). Short the RS and CS pins of the PC connector together (see
< in the figure).
Connect the cable shield to the connector cover and pin 1 at both the NT30/30C and CPU Unit ends of the cable.
NT30/30C
RS-232C
interface
Abbrevi- Pin
ation number
Connector
cover
SD 2
RD 3
RS 4
CS 5
6
+5V
7
8
Shield
SG 9
C20H/C28H/C40H/C60H
Complies with EIA RS-232C
Signal input and output is relative to the PC.
Connector Connector
Pin No.
Connector cover
2
3
4
5
7
Abbrevi- Pin
ation number
Connector
cover
SD 2
RD 3
RS 4
CS 5
+5V 6
– 7
– 8
Shield
SG 9
PC (Host Link Unit)
Pin Abbrevi-
number ation
Connector
FG
cover
2
SD
3 RD
4 RS
5 CS
<
6
–
7 SG
8 –
– –
– –
– –
– –
20 ER
25-pin
connector
Signal Name Sign l N me
Frame ground
Send data
Receive data
Request to send
Clear to send
Signal ground
PC CPU Unit
Pin Abbrevi-
number ation
Connector
FG
cover
2 SD
3 RD
4
RS
5
CS
<
6 –
7 SG
– –
–
–
9-pin connector
Appendix E
RS-232C
interface
Signal Direction
Abbrevi tion Abbreviation
Input Output
FG –
SD (TXD)
f
RD (RXD)
RS (RTS)
f
CS (CTS)
SG (GND) –
RS-232C
interface
–
f
f
–
273