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Author Topic: Feed rate changes.  (Read 1205 times)

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Feed rate changes.
« on: January 17, 2017, 11:41:38 PM »
Hello everyone,
Can the feed rate be changed when just jogging the axis around while using the x, y, z keyboard buttons? Do you have to be running a gcode file in order to change feed rates? I'm assuming feed rate is the speed your axis move around on the table. So if i want to change the feed rate is that done with the button on the main screen of mach 3? I am very new to this. I just got my router cnc going on Sunday for a few minutes. Thanks in advance.
« Last Edit: January 17, 2017, 11:46:53 PM by rchavez101 »

Offline Davek0974

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Re: Feed rate changes.
« Reply #1 on: January 18, 2017, 03:13:50 AM »
feed rate is generally set in the g-code file with the "F" parameter.

you can use the MDI (manual data input) line to enter a feed rate - to set 1000mm/min click on the MDI line and type F1000 then press enter.

It has no effect on jogging though.
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives

Offline Tweakie.CNC

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Re: Feed rate changes.
« Reply #2 on: January 18, 2017, 03:26:55 AM »
Feed-Rate does not apply when jogging an axis from the keyboard buttons.
If you hit the Tab key, on the MPG fly-out, you can change the Slow Jog Rate % (0 to 100% of the maximum speed). The % speed that is set here is overridden (to 100%) if holding the shift key whilst jogging.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Feed rate changes.
« Reply #3 on: January 18, 2017, 06:11:28 AM »
Thank you for the replies. So what is the feed rate button with +- for on the main screen?
« Last Edit: January 18, 2017, 06:13:15 AM by rchavez101 »

Offline Davek0974

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Re: Feed rate changes.
« Reply #4 on: January 18, 2017, 06:36:45 AM »
That is feed-rate override - when code is running you can click the +/- buttons to override the rate set in the code file, also described as FRO.

Its useful if things are not cutting well as you can adjust the feed to find a better speed then use that speed in future code files etc
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives