Phonetics Sensaphone SCADA 3000, Руководство пользователя

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Address Jumper Code
1 A B B B
2 B A B B
3 A A B B
4 B B A B
5 A B A B
6 B A A B
7 A A A B
8 B B B A
9 A B B A
10 B A B A
11 A A B A
12 B B A A
13 A B A A
14 B A A A
15 A A A A
Figure 6: Setting the Bus Address
Bus Termination
Located on each module is a jumper labeled BUS TERM. This jumper is used to terminate the
4-wire communications bus.
Figure 7: Bus Termination jumper
Termination is required at the extreme ends of the communications network to minimize
signal reflections that would otherwise cause data communication errors. To activate the Bus
Termination, move the jumper to the IN position. Note that this should only be activated if the
module is at the very end of the network. All other modules in between should have the termi-
nation set to the OUT position. As a result, only 1 module should ever have the termination
activated. The diagram below illustrates proper termination of the communications bus.
Figure 8: Correct bus termination
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SCADA 3000 User’s Manual