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Author Topic: ModBus Output  (Read 2022 times)

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ModBus Output
« on: April 08, 2014, 04:54:21 PM »
Hi guys,

I have full comms to my VFD via Modbus, but I have an issue that is causing heartache!

My VFD accepts reading of registers by using Modbus function code '03' and writing of registers using function code '10'. Mach3 reads using the 03 code with no problem and can write 2 or more registers by using code 10.

I really need to write  a single register - but when I do Mach3 uses function code '06' eeeek is there any way of writing a single register using function code '10' (which the VFD accepts).


earle