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HD-TVI Speed Dome DS-2AE7232TI-A User Manual
UM THD DS-2AE7232T-x 020519NA
44
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Troubleshooting RS-485 Communication
Problem
Possible Reasons
To Solve the Problem
The speed
dome does the
self-test
action, but
cannot be
controlled
remotely
1. The speed dome address or baud rate
does not match those of the remote
control device
1. Adjust the remote control device
address and baud rate to match those
of the speed dome
2. The RS-485+ connects to the
interface RS-485- and RS-485-
connects to the interface RS-485+
2. Connect the RS-485+ to the interface
RS-485+ and RS-485- to the interface
RS-485-
3. The RS-485 wire is disconnected
3. Reconnect the RS-485 wire tightly
4. RS-485 wire is broken
4. Change a RS-485 wire
The speed
dome can be
controlled, but
not smoothly
1. The connection is loose
1. Reconnect the RS-485 wire tightly
2. RS485+ or RS485-wire is broken
2. Change an RS-485 wire
3. The speed dome is too far from the
remote control device
3. Add a terminal resistor
4. Too many speed domes are
connected
4. Add an RS-485 distributor