App6-6
Appendix 6 Universal Serial Communications
CN1: RS-232C Connector Specifications
The specifications for the RS-232C connector that links to the communication device are shown below.
•
FG signal
- Connect the shielded cable to Pin No. 1 on the V series side. When there are FG terminals on
both the communication device and the V series, connect the shielded cable to one of the FG
terminals.
- If both of the terminals are connected, problems such as noise might result in abnormal data
transmission.
•
Wiring
Perform wiring as shown below.
<Executing Flow Control>
Pin No.
Name
Signal Name
Signal Direction (V Series
←→
Communication Device)
1
Frame ground
FG
2
Send data
SD
3
Receive data
RD
4
Request to send
RS
5
Clear to send
CS
7
Signal ground
SG
1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 1819 20 21 22 23 24 25
* Contact arrangement of the pin insert
FG
SD
RD
RS
CS
SG
1
2
3
4
5
7
FG
SD
RD
RS
CS
SG
1
2
3
4
5
7
* Use twist-shielded cables.
V series (CN1)
General-purpose
computer
Signal
Name
Pin No.
Signal
Name
Pin No.
FG
SD
RD
RS
CS
SG
1
2
3
4
5
7
FG
SD
RD
RS
CS
SG
1
2
3
4
5
7
* Use twist-shielded cables.
V series (CN1)
General-purpose
computer
Signal
Name
Pin No.
Signal
Name
Pin No.
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