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3. Introduction
The TD-29 is designed for communication on 2-wire copper cable (twisted pair).
Multidrop or point to point is possible.The TD-29 will support half duplex at baud rates
up to 19.2 kbit/s.
The TD-29 is easy to configure for different operating conditions with DIP-switches.
Character formats, baud rate, transmission level, DCD detection level and communica-
tion interface are selectable. DTE-equipment can be connected through an
RS-232 or an RS-422/485 interface.The RS-232 connection can be made through either
the DB-9 connector or screw terminal on the front of the unit.There are four baud
rate settings.
When using the RS-232 interface the direction of communication can be controlled by
RTS handshake signal or incoming data.
When connecting in multidrop configuration the maximum bus length depends on the
number of units connected. (see chapter 4.5)
RS-232
6611-2001
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
R+ R-
T+ T-
T+ T-
R+ R-
CHANNEL 3
CHANNEL 4
Dedicated line
PWR
RD
TD
DCD2
DCD3
DCD4
CHANNEL 2
POWER
12-36V DC
R+ R- T+ T-
1
2
3
4
-
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
R+ R-
T+ T-
T+ T-
R+ R-
CHANNEL 3
CHANNEL 4
PWR
RD
TD
DCD2
DCD3
DCD4
CHANNEL 2
POWER
12-36V DC
R+ R- T+ T-
1
2
3
4
5
-
GB.19
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