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1
14
25
13
1
6
9
5
259
Method for Making the Cable for Connection to the Host
Appendix G
S
Wiring Connections
The NT20S 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 shielding wire to the connector cover and pin 1 at both the NT20S and CPU ends of the cable.
1
2
3
4
5
6
7
8
9
Pin
number
Abbrevi-
atioon
SD
RD
RS
CS
–
–
–
SG
RS-232C
interface
Shielding
wire
NT20S
PC CPU
RS-232C
interface
Pin
number
Abbrevi-
atioon
1
2
3
4
5
6
7
–
–
FG
SD
RD
RS
CS
–
SG
–
–
9-pin connector
Connecting an NT20S to a CVM1/CV-Series Host Link Unit
S
CVM1/CV-Series Host Link Unit Connector Specifications
S
Applicable host link unit:
CV500-LK201
S
Electrical characteristics:
Complies with EIA RS-232C
S
Signal direction:
Signal input and output is relative to the PC.
Communication Port 1 (25-pin Connector)
Connector Pin
Signal Name
Abbreviation
Signal Direction
Connector Pin
No.
Signal Name
Abbreviation
Input
Output
Connector cover
Frame ground
FG
–
–
1
Frame ground
FG
–
–
2
Send data
SD (TXD)
f
3
Receive data
RD (RXD)
f
4
Request to send
RS (RTS)
f
5
Clear to send
CS (CTS)
f
7
Signal ground
SG (GND)
–
–
8
Carrier detected
CD (DCD)
f
14
Optical con5V
+5V
–
f
20
Data terminal ready
ER (DTR)
f
Communication Port 2 (9-pin Connector)
Connector
Signal Name
Abbreviation
Signal Direction
Connector
Pin No.
Signal Name
Abbreviation
Input
Output
Connector cover
Frame ground
FG
–
–
2
Send data
SD (TXD)
f
3
Receive data
RD (RXD)
f
4
Request to send
RS (RTS)
f
5
Clear to send
CS (CTS)
f
9
Signal ground
SG (GND)
–
–
Summary of Contents for NT20S
Page 1: ...Cat No V020 E1 04 NT20S Programmable Terminal OPERATION MANUAL ...
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Page 4: ...iii NT series Programmable Terminal Operation Manual Revised August 1997 ...
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