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Appendix G
Method for Making the Cable for Connection to the PC
306
S
Wiring connections
CVM1/CV-series host link units have two types of connector, which must be wired differently.
The NT620S/620C does not use pin 4 (RS) or pin 5 (CS). Either short the RS and CS pins of the PC connector
together 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 shielding wire to the connector cover and pin 1 at the host link unit end of the cable only.
Communication port 1 (25-pin Connector)
1
2
3
4
5
6
7
8
9
Pin
number
Abbreviation
SD
RD
RS
CS
+5V
–
–
SG
RS-232C
interface
RS-232C
interface
Pin
number
Abbreviation
1
2
3
4
5
6
7
8
–
FG
SD
RD
RS
CS
–
SG
–
–
Shielding
wire
25-pin
connector
NT620S/620C
PC (host link unit)
–
–
–
ER
–
–
–
20
<
Communication port 2 (9-pin Connector)
1
2
3
4
5
6
7
8
9
Pin
number
Abbreviation
SD
RD
RS
CS
+5V
–
–
SG
RS-232C
interface
Shielding
wire
NT620S/620C
PC (host link unit)
RS-232C
interface
Pin
number
Abbreviation
2
3
4
5
6
7
–
9
FG
SD
RD
RS
CS
–
CD
–
SG
9-pin connector
Connector
cover
<
Summary of Contents for NT620C
Page 1: ...Cat No V033 E1 5 Programmable Terminals NT620S 620C OPERATION MANUAL...
Page 2: ...NT620S 620C Programmable Terminals Operation Manual Revised April 2001...
Page 3: ...iv...
Page 5: ...vi...
Page 328: ......
Page 329: ......