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Author Topic: spindle speed via modbus  (Read 2262 times)

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spindle speed via modbus
« on: November 09, 2010, 07:46:39 AM »
Is it possible to control the spindle speed using a frequency inverter and sending the speed information from Mach3 via Modbus?

I know I can use PWM or pulse/dir signals, although I´m running out of available pins, so I thought using modbus for this.
Re: spindle speed via modbus
« Reply #1 on: November 09, 2010, 07:55:11 AM »
Hi,

Yes, if your inverter can communicate via Modbus.

Cheers,

Peter.
----------------------------------------------------
Homann Designs
http://www.homanndesigns.com
email: peter at homanndesigns.com
Re: spindle speed via modbus
« Reply #2 on: November 09, 2010, 08:07:37 AM »
Yes, the inverter uses modbus and I know how to set it up for this.
I don´t know how to setup Mach3 to give this information tho the inverter via modbus.
Re: spindle speed via modbus
« Reply #3 on: November 09, 2010, 08:20:04 AM »
Hi,

Have a look at this thread. It shows how it was done for a Hitachi VFD.

http://www.machsupport.com/forum/index.php/topic,16316.0.html

You will need to look at your manual to find the appropriate registe numbers.

Cheers,



Peter.
----------------------------------------------------
Homann Designs
http://www.homanndesigns.com
email: peter at homanndesigns.com
Re: spindle speed via modbus
« Reply #4 on: November 10, 2010, 11:14:48 AM »
Peter,

Thanks a lot!!
I´ll take a deep look at that. It seems to be what I need.