Machsupport Forum

Mach Discussion => Mach4 General Discussion => Topic started by: Toshio.K on September 13, 2021, 07:23:46 AM

Title: How to monitor the rotation speed of the spindle with Mach4 ??
Post by: Toshio.K on September 13, 2021, 07:23:46 AM

Hello everyone.
The INDEX LED does not blink. Please tell me the solution.

I am,
The Hall IC DN6851-A is connected to the BOB input terminal (Port3 # 10).
The setting of Mach4 maps Port3 # 10 to INDEX.
You can check the On / Off of Port3 # 10, but the INDEX LED in the red frame does not blink.
Can anyone please tell me the solution?
Thanking you in advance.

Title: Re: How to monitor the rotation speed of the spindle with Mach4 ??
Post by: MN300 on September 13, 2021, 08:53:25 AM

Have you checked the output of the sensor with a voltmeter? The DN6851-A hall effect sensor you have used is an alternating magnetic field type. The magnetic field it sees needs to change between as least -20 mT to +20 mT. In other words, it needs to see both the North and South pole of the magnet to operate.

Title: Re: How to monitor the rotation speed of the spindle with Mach4 ??
Post by: Toshio.K on September 13, 2021, 05:54:02 PM

Hello Mr.MN300.

> Have you checked the output of the sensor with a voltmeter?

Yes, I confirmed with a tester.
On / Off.

And Port3 # 10 on the diagnostic tab flashes.

Please look at the photo.
Is my Mach4 setting correct?