Machsupport Forum

Third party software and hardware support forums. => Modbus => Topic started by: johndolecki on December 12, 2014, 04:37:41 AM

Title: mod i/o and Vfd control on same port?
Post by: johndolecki on December 12, 2014, 04:37:41 AM

Can Mod i/o and mod control  of a vfd be done on a single port?

I was thing about getting the homan design mod i/o but i also want to control my VFD via modbus.

thanks, john

Title: Re: mod i/o and Vfd control on same port?
Post by: Peter Homann on December 15, 2014, 06:28:39 AM

Hi John,

Yes you can. The ModIO has an inbuilt RS232-RS485 converter in it. You can connect the ModIO to the PC via RS232 then use the RS485 bus on the ModIO to connect to the VFD.

You will need to write the brains to get Mach3 to control the spindle speed via Modbus.

I wrote an article on how to to use Modbus with Mach3. You can download it from the documents page(about 1/2 way down) on my store.

http://www.homanndesigns.com/store/index.php?main_page=page_2

There is also an engineering note "EN007M MC-01 ModIO™ as RS-232 to RS485 Converter" on the same page that details setting the modIO up to do the RS232 to RS485 conversion.
 

Cheers,

Peter

Title: Re: mod i/o and Vfd control on same port?
Post by: BR549 on December 15, 2014, 07:08:00 PM

HIYA Peter, I had sent you some emails check your trash bin(;-)

(;-) TP

Title: Re: mod i/o and Vfd control on same port?
Post by: Peter Homann on December 15, 2014, 07:27:53 PM

Hi terry,

Haven't seen anything so I'll check.

cheers,

Peter