Possible Reasons
Solution
Speed dome
can run self-
diagnosis but I
can not control
it.
Host address(baud rate) and
speed dome address(baud rate)
are not match;
Positive and negative end of
RS485 Bus are misconnected;
Connection cable is loose
；
RS485 Bus connection are cut
off;
Modify host or speed dome setup
；
Switch RS485 positive end and
negative end
；
Fix connection cable firmly
；
Replace RS485 Bus.
I can control
the speed
dome but is not
smooth
RS485 Bus connection are not
good
；
One RS485 bus is off
；
The distance between host and
speed dome is too far
；
Parallel connected too much
speed domes.
Connect RS 485 Bus again
；
Replace RS485 Bus
；
Add terminal matching resistance
；
Add RS485 distributor.
Figure 7-2
7.4 RS485 Bus FAQ
20
Содержание DNA1991YM
Страница 4: ...7 4 8 RS485 Bus FAQ 20 APPENDIX SAFETY ROPE INSTALLATION 21 iii...
Страница 21: ...Figure 3 3 13...
Страница 23: ...Figure 4 3 15...
Страница 30: ...i Network Camera Web3 0 Operation Manual Version 1 0 1...
Страница 83: ...49 Figure 5 18 Figure 5 19...
Страница 84: ...50 Figure 5 20 Figure 5 21...
Страница 114: ...80 Figure 5 56 8 Click Next Select Trusted Root Certification Authorities which is shown in Figure 5 57...
Страница 116: ...82 Figure 5 58 10 Click Finish and it will pop out the dialog box of Security Warning which is shown in Figure 5 59...
Страница 148: ...114 Figure 5 84 Figure 5 85...
Страница 169: ...135 Figure 5 117...
