Author Topic: mod i/o and Vfd control on same port?  (Read 4278 times)

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Offline johndolecki

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mod i/o and Vfd control on same port?
« 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

Offline Peter Homann

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Re: mod i/o and Vfd control on same port?
« Reply #1 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 ModIOâ„¢ 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
« Last Edit: December 15, 2014, 06:31:13 AM by Peter Homann »
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Offline BR549

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Re: mod i/o and Vfd control on same port?
« Reply #2 on: December 15, 2014, 07:08:00 PM »
HIYA Peter, I had sent you some emails check your trash bin(;-)

(;-) TP

Offline Peter Homann

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Re: mod i/o and Vfd control on same port?
« Reply #3 on: December 15, 2014, 07:27:53 PM »
Hi terry,

Haven't seen anything so I'll check.

cheers,

Peter
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email: peter at homanndesigns.com