System information

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1. Address DIP Switch
2. Protocol DIP Switch
3. Address and Protocol Settings
1
2
3
Figure 3
4. Problems in the Practical Application
Normally, users adopt star-shape connection method in construction, under this situation, the terminal resistors must be con-
nected between two farthest devices (as Figure 4, 1# and 15#), but this connection method is not satisfy the requirement of the
RS485 industry standard so that it will lead to some problems such as signal reflection, anti-jamming ability decline when the
devices are faraway. At this time, the dome will be uncontrollable, or self-running, etc.
GB