[How-to Article] How to test RS-485 on RSB-4680?

[phill.liu]

Problem Description:
Testing RS 485 with Adam-4520

Answer:

1. Prepare RS-232 to RS-485 converter (Adam -4520)

2. COM4(232/485) (ttyS4 , 115200) , CN18 : Pin4 and Pin6 (jumper)
   Note : DB9 Pin 1 DATA - and DB9 Pin2 are DATA +

3. Hardware setting :

   
   
   
   

4.Install “ComAssistant V1.1 APK in RSB-4680 (android system) , Execute “AccessPort” tool in x86 (Window system)

5.ComAssistant setting

![image|375x281](upload://cHqSVRmKrctt0xvjThCWAj0m3Kl.jpeg)
![image|375x281](upload://yXJREepl2A4HVZM5mlnXHTyZ5c8.jpeg)

6. AccessPort tool setting
   
   

Need to turn on the serial on/off function

    Then you will see that the “send” function will turn on 

RS485 Testing:

When you key the number in send data window (Android system) , then press the “send” button , the AccessPort tool will receive the data .