378
CompoWay/F Master Protocol Appendix B
Connections
Connection methods between a Serial Communications Board or Unit and the K3N@-series Intelligent Signal
Processor are shown below.
RS-232C
• RS-232C connections are one-to-one.
• The max. cable length is 15 m. Use an RS-232C optical interface (Z3RN) when extending the transmission
line beyond 15 m.
• Use shielded, twisted-pair cable.
FG
SG
SD
RD
RTS
CTS
DSR
DTR
RS-232C
Serial Communications
Unit/Board
Shield
Abbrevi-
ation
TX
RX
FG
SG
SD
RD
RTS
CTS
DSR
DTR
RS-232C
1
3
2
3
4
5
6
20
Intelligent
Signal
Processor
Pin
No.
Abbrevi-
ation
MAX232C or equivalent
1
9
2
3
4
5
7
8
Pin
No.
K3N@-@@@@-FLK1
RS-232C
Abbrevi-
ation
Pin
No.
RS-232C
Pin
No.
Abbrevi-
ation
MAX232C or equivalent
Shield
K3N@-@@@@-FLK4
Serial
Communications
Unit/Board
SG
SD
RD
RTS
CTS
DSR
DTR
5
2
7
8
6
4
2
9
3
4
5
7
8
SG
SD
RD
RTS
CTS
DSR
DTR
TX
RX
Intelligent
Signal
Processor
7
FG
1/
Shell
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