Machsupport Forum

Mach Discussion => VB and the development of wizards => Topic started by: Renatox_ on September 18, 2013, 03:55:12 PM

Title: DRO external visualization
Post by: Renatox_ on September 18, 2013, 03:55:12 PM

Hello, would display the angle of a blade of a cutter foam, this varies from -30 to 30 degrees. The PLC can send a PWM or variable frequency proportional to the angle. My problem is how i can use a DRO to see this angle.

I could use the RPM DRO but this is on another scale.

I can use a DRO with my settings, or how could see this angle?.

thanks
Renato

Title: Re: DRO external visualization
Post by: BR549 on September 18, 2013, 07:27:39 PM

Without using an analog to digital converter board or a frequency counter board I don't think you can.

(;-) TP

Title: Re: DRO external visualization
Post by: Renatox_ on September 18, 2013, 08:46:39 PM

Hi, i use a ADC converter in my PLC to measure the angle of the blade, the PLC can send a signal to mach of PWM or variable frequency proportional to the angle of the blade.

For example, the PLC sends to mach a PWM of 50% for 0°, 100% for 30° and 0% for -30°.

My problem is how to visualize this angle.

thanks.
Renato

Title: Re: DRO external visualization
Post by: BR549 on September 18, 2013, 09:48:58 PM

IF the ADC can talk modbus then you can bring the values to mach through the Modbus serial com. other than that you can't read the values .

(;-) TP

Title: Re: DRO external visualization
Post by: Renatox_ on September 20, 2013, 03:11:02 PM

Hello, can i modify the value of INDEX? This is for measurement rpm, then i would do

angle=(rpm-1500)*0.02;

Of this form i can obtain -30 a 30 DRO.

thanks
Renato

Title: Re: DRO external visualization
Post by: BR549 on September 20, 2013, 04:30:52 PM

The index signal is a simple Digital signal it is either ON/OFF , 1/0. There is NO analog value to it to modify.

(;-) TP