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For this case,we suggest you add one RS485 distributor.It can solved all problem.Avoid production
problems and improve communications reliability.
Appendix Simple Trouble Shooting Table
Problems Possible
causes
solutions
No action, no picture
when power is switched
Power supply adaptor
damaged or Power supply
not sufficient
Replace
Wrong contact of power
cables
Correct
Engineering line fault
Exclude
Abnormal self-check,
image shown with motor
Mechanical failure
Repair
Camera inclined
Reinstall
Power supply not sufficient
Replace, better to place the
adaptor nearby the unit
Normal self-check
but no image
Wrong contact of video
lines
Correct
Bad contact of video cables
Exclude
Camera is damaged
Replace
Normal self-check and
image but out of control
Wrong contact of control
signal
Correct
Address configuration
wrong
Choose new address and
power up
Protocol or Baud rate
configuration wrong
Adjust Protocol, baud rate to
match controller and power up
Unstable image
Bad contact of video cable
Exclude