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231
8-12. Modem Communication
■
System configuration: One computer and two or more FP-M control board
The following diagrams show the pin layout of the cables for modem communication.
Cable pin layout
Cable 1:
Cable 2: Between a modem and RS232C port of FP-M control board
Modem (25 pins)
Pin No.
1
2
3
4
5
7
8
9
6
Abbreviation
FG
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
SG
ER (DTR)
RS232C port (25 pins)
of C-NET adapter
Pin No.
1
2
3
4
5
7
8
20
22
Abbreviation
FG
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
SG
CD (DCD)
ER (DTR)
RI (CI)
IBM PC-AT (9 pins)
Pin No.
1
2
3
4
5
6
7
8
9
Abbreviation
CD (DCD)
RD (RXD)
SD (TXD)
ER (DTR)
SG
DR (DSR)
RS (RTS)
CS (CTS)
RI (CI)
Modem (25 pins)
Pin No.
1
2
3
4
5
6
7
8
20
Abbreviation
FG
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
DR (DSR)
SG
CD (DCD)
ER (DTR)
Personal computer (25 pins)
Pin No.
8
3
2
20
7
6
4
5
22
Abbreviation
CD (DCD)
RD (RXD)
SD (TXD)
ER (DTR)
SG
DR (DSR)
RS (RTS)
CS (CTS)
RI (CI)
Pin No.
1
2
3
4
5
6
7
8
20
Abbreviation
FG
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
DR (DSR)
SG
CD (DCD)
ER (DTR)
Modem (25 pins)
• Between IBM PC-AT (9 pins) and a modem (25 pins)
• Between a personal computer (25 pins) and a modem
(25 pins)
Cable 1
Computer
Telephone line
Modem
Modem
PC
C-NET
ADAPTER
ON
OFF
ON
ON
ABCDEF
ABCDEFGHI
AB
ABCD
C-NET
adapter
standard
type
C-NET
adapter
S2 type
PC
C-NET
ADAPTER
ON
OFF
ON
ON
ABCDEF
ABCDEFGHI
AB
Transmission cable (shielded twisted pair
or 2-conductor cable)
FP-M control board
C-NET
adapter
S2 type
PC
C-NET
ADAPTER
ON
OFF
ON
ON
ABCDEF
ABCDEFGHI
AB
FP-M control board
A maximum of 32
FP-M control boards
can be connected.
Cable 2
Содержание FP-M Hardware
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