How to check if MDVR can not find RS485 of Passenger Counter

2020-04-02 FAQ 91 views sumeng

There are some reasons if the MDVR can not find RS485, such as the following possible reasons.

485 cables connection wrong: MDVR 485-A should connect 485-A of Passenger Counter, 485-B should connect 485-B of Passenger.

485 serial port option selection is wrong:Need select JHY CNT VER2


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24pin(Alarm Cable) is not working:Can change the alarm cable and test

Firmware version can not issue:Firmware version not support Passenger Counter, need upgrade to the special version, can confirm with the Support Engineer.

1.For the Passenger Counter host, if the host address code is 0 as default, the MDVR will not find the RS485 serial port. It shows like the following picture. It shows “None”, but if it works well, it will shows “Exist”.


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2.First you can connect to the Passenger Counter host to the PC using RJ45 port of the counter.Use switch and RJ45 cable.


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3.Check the parameter settings, compare the Device Address, if it’s 0.


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4.If it’s 0, need change the value to 1, and if you need connect two Passenger Counters, the front door and back door, you can set 1 for front Counter host, and set 2 for back Counter host.


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