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Messages - joeaverage

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3751
General Mach Discussion / Re: CS Labs CSMIO/P-A
« on: August 27, 2018, 02:47:27 PM »
Hi.
no. It looks like the manufacturer has included a current limit resistor in the input circuit. The pic is from one you
posted earlier.

Craig

3752
General Mach Discussion / Re: Need help stepper + drive
« on: August 27, 2018, 02:39:06 PM »
Hi,
yes it will work, but buy some spares....they tend to blow up. They are based on a Toshiba IC and they are tender. Note the max voltage is only 42V.

As Gary has said Leadshine do better, the AM882 is very capable. 80V max

If you don't mind paying extra then look at Gecko drives, top quality.

Craig

3753
General Mach Discussion / Re: feedrate 0 during program run
« on: August 27, 2018, 07:21:23 AM »
Hi,
a 'Stop' command aborts the buffer, whatever moves are in it are lost. The machine looses reference. To continue you need to re-reference and
dry-run to the line prior to that that was executing when the 'Stop' occurred.

Look on the Diagnostics Tab and you'll see the number of look-ahead lines. Typically about 0.2 to 0.5 seconds worth. You can reduce the buffer and
get less overrun on <FeedHold> but risk the buffer running out, at which Mach stalls, and probably the steppers stall so loosing reference.

Windows is not a realtime operating system and so you cannot guarantee that it will provide service/data at a given time or rate. There are realtime
operating systems which can be relied on to deliver service and/or data at given times but they cannot run Windows software.

Mach is one of the more successful attempts to get Windows (a non realtime system) to control a CNC machine which demands a realtime controller.
Buffering is one of the easier solutions, other methods are expensive which defeats the purpose of Mach.

Craig

3754
General Mach Discussion / Re: Coordinates don’t change
« on: August 27, 2018, 06:57:14 AM »
Hi,
are you using a parallel port or an external controller?

Craig

3755
General Mach Discussion / Re: Coordinates don’t change
« on: August 27, 2018, 06:03:45 AM »
Hi Jim
do you have any motors enabled in Config/Ports and Pins/ Motor Outputs?.

If you don't have a motor enabled the DRO will not change. Don't worry you can enable a motor but not hook it up,
Mach doesn't know that, and it can't tell, its not a feedback system.

When you first turn Mach on the federate is set very low. Try MDIing:
F100     and then try a few MDI instructions.

Craig

3756
General Mach Discussion / Re: very newbie
« on: August 27, 2018, 05:56:44 AM »
Hi,
so what sort of machine do you have? How about a pic....speaks a thousand words.

What PC and what OS? Do you have a parallel port or some sort of external motion controller?

Craig

3757
General Mach Discussion / Re: CS Labs CSMIO/P-A
« on: August 27, 2018, 05:49:20 AM »
Hi,
these modern servos pack in so much stuff, you'll be blown away once you get the software running.

In some respects you are making life more difficult for yourself with the analogue CSMIO controller, you now have the drive closing the acceleration
and velocity loops with the CSMIO closing the position loop. With a step/direction controller the entire servo loop is closed by the drive and a number
of control features come into play which cannot happen with control split over the drive and CSMIO. I refer to indexing position and/or speed.
My Allen Bradley servo allows you to select two control modes, say step/direction position mode and analogue velocity mode, either of which can be selected
by asserting one digital input. Really handy, assert one input and my servo turns from a free running voltage controlled motor to a high torque indexable
servo with a resolution of 5 arc min.

Anyway the chances are these servos will be in the family for many years and no doubt you will get to sample how they do with an open loop step/direction control.

Craig

3758
General Mach Discussion / Re: CS Labs CSMIO/P-A
« on: August 27, 2018, 05:02:21 AM »
Hi,
I personally think the choice of names for the photodiode terminals is poor.

If the intention is to drive current through the photodiode then pin 9 should be called DI+ and the cathode common could have been called
DI- or COM- or something. The choices the Germans have made (DI- and COM+) are confusing.



Craig

3759
General Mach Discussion / Re: CS Labs CSMIO/P-A
« on: August 27, 2018, 04:26:21 AM »
Hi,

Quote
output0 of the cluster to the anode of the drive input photodiode.

Is this pin 9 or 11?

According to the pic from the manual you attached its pin 9.

Quote
and then from the cathode of the photodiode to 0V (purple highlight).

Is this pin 45, 47 or 49?


Likewise from the same pic the cathode, common to all four DI's, is pin 11 called COM+ and that will be connected to pin 45 or 47 or 49 by an external wire with
your handy soldering iron.

Craig

3760
General Mach Discussion / Re: CS Labs CSMIO/P-A
« on: August 27, 2018, 04:10:12 AM »
Hi,
added some pin numbers.

Craig

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