10
ABB Automation
1MRS 750107-MUM
Serial LonTalk
Adapter
Technical Reference Manual
SLTA Option Card
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5.2.2.
3-Wire connection to a host
The diagram below illustrates the cable requirements for 3-wire connection to a host.
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5.2.3.
8-Wire connection to a modem
The diagram below illustrates the cable requirements for an 8-wire connection to a
modem.
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Protective shield
Conductive casing
sslta_4
2
2
2
2
3
3
3
3
5
5
5
7
Host (DTE Mode)
SL TA (DCE Mode)
RXD
TXD
GND
RXD
TXD
GND
9 pin female
D-connector
9 pin male
D-connector
Host (DTE Mode)
SL TA (DCE Mode)
TXD
GND
RXD
RXD
TXD
GND
9 pin male
D-connector
25 pin female
D-connector
sslta_5
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Modem (DCE Mode)
SL TA (DTE Mode)
9 pin female
D-connector
9 pin male
D-connector
DCD OUT
TXD
RXD
DTR IN
GND
DSR OUT
RTS IN
CTS OUT
RIOUT
DCD IN
TXD
DTR OUT
GND
DSR IN
RTS OUT
CTS IN
RIIN
RXD
sslta_6
