- -
13
Please refer to Figure 7 for simple connection. “D” should not exceed 7m.
120
Ω
120
Ω
1#
2#
3#
4#
32#
. . . . .
Figure 6
120
Ω
1#
2#
3#
31#
120
Ω
D
A+
B-
A+
B-
. . . . .
. . . . .
M ain controller
Figure 7
The connection of 120
Ω
termination resistor: The termination resistor is ready on the Protocol PCB.
There are two kinds of connection. Refer to the Protocol PCB jumper setting form (refer to Picture 1).
1) In the Picture it is the factory default connection. The jumper is seated on Pin2&Pin3 and the
termination resistor is not connected.
2) when connecting the 120
Ω
termination resistor, user should plug the jumper on Pin1&Pin2. and
the termination resistor is connected.
<Figure 8>
120
Ω
120
Ω
120
Ω
1#
2#
16#
.
.
.
.
MC2080
A+
B-
<Figure 9>