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added more mbpoll information
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=== mbpoll ===
 
=== mbpoll ===
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<code>mbpoll</code> commands:
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There is an open source utility that can speak Modbus over a serial port (or USB to serial) that has an RS-485 adapter attached. It's called mbpoll:
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https://github.com/epsilonrt/mbpoll
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<code>mbpoll</code> commands to interact with the VFD:
    
<pre># fault reset
 
<pre># fault reset

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