Owner's manual
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37!
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Figure!A?9!Star!Shape!Connection!
!
For!such!case,!the!best!way!is!adding!a!RS485!distributor.!This!product!can!effectively!change!the!star?shape!connection!
to!which!satisfies!the!requirement!of!RS485!industry!standard,!in!order!to!avoid!those!problems!and!improve!the!
communication!reliability.!Refer!to!the!following!figure.!
!
!
Figure!A?10!RS485!Distributor!
! Troubleshooting!of!RS485!communication!
'/.L?+3!
'.>>@L?+"B+2>.;>"
(."%.?^+",T+"'/.L?+3!
The!speed!
dome!does!
the!self?test!
action!but!
cannot!be!
controlled!
remotely."
1.!The!address!or!baudrate!of!the!speed!
dome!does!not!match!with!those!of!
remote!contro l!dev ice.!
1.!Adjust!the!address!and!baudrate!of!the!
remote!contro l!dev ice!to!m a tch!with!
those!of!the!speed!do m e. !
2.!The!wire!RS485+!connects!to!the!
interface!R S4 8 5?!and!wire!RS485?!
connects!to!the!interface!RS485+.!
2.!Connect!the!wire!RS485+!to!the!
interface!R S4 8 5 +!a n d !w ir e!R S 4 8 5? !to!the!
interface!R S4 8 5?.!
3.!The!RS485!wire!is!disconnected.!
3.!Reconnect!the!RS485!wire!tightly.!
4.!RS485!wire!is!broken.!
4.!Change!a!RS485!wire.!
The!speed!
dome!can!be!
controlled!
but!not!
smoothly.!
1.!The!connection!is!loose.!
1.!Reconnect!the!RS485!wire!tightly.!
2.!RS485+!or!RS485?wire!is!broken.!
2.!Change!a!RS485!wire.!
3.!The!speed!dome!is!too!far!away!from!
the!remote!control!de vice. !
3.!Add!a!terminal!resistor.!
4.!Too!many!speed!domes!are!
connected.!
4.!Add!a!RS485!distributor.!
!
6#
主控
设备
1#
32#
15#
120Ω
120Ω
120Ω
1#
2#
16#
A+
B-
485分配器
Contr oller!
Device!
RS485!Distributor!