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USB to RS485 cable

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Kal_B

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Hello guys,

I would like to make a communication cable to connect to a VFD and had a look at the instruction of the one they're selling. (See attachment)
It shows that conductor #4 has a pullup resistor and #5 a pulldown resistor. Does that mean I connect the pullup to #4 and #7 and pulldown to #5 and #8?

Thanks
Kal
 

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  • BBV28000_00.pdf
    517.3 KB · Views: 125
Yes... BUT!! If there is only one RS485 unit, you will need the 120 ohm terminating resistors aswell

Look at the interface... J4 is for "End of Bus"...
upload_2017-3-9_7-9-11.png
 
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