Messages

11

Modbus / Modbus MPG - Dangerous Situation - Need Help

« on: August 23, 2013, 07:59:40 PM »

Heres the scenario:

I am using a brain to drive Mach3 via MPG which utilizes the "MPG Count" terminator which works fine.

During operation, the value for the "MPG Count" within the brain increments and decrements as you would expect by using the integer values that are generated
from the modbus device. A problem occurs if the modbus device is disconnected from Mach3 and then reconnected, Mach3 takes off as
soon as the device reconnects without touching anything. I know that as soon as the modbus device is reconnected, the brain is fed a value of "0" to the "MPG Count" which makes
the "MPG Count" also change to "0".This makes Mach3 think that the MPG is being rotated when in fact it hasnt been touched.....really dangerous.

Can anyone offer a solution or any insight to a workaround

My project if completed except for this issue and I've exhausted everything I can think of......thanks all

12

Brains Development / OEM Button 327 causes Mach3 to take off

« on: July 26, 2013, 05:27:14 PM »

When I use Button 327 via brains to turn on MPG jogging through a modbus connection, mach3 just takes off jogging all by itself, any suggestions ?

13

Brains Development / Pass Through a Value if its NOT Equal to Zero

« on: June 10, 2013, 06:49:45 PM »

Can anybody show me how to pass through a value ONLY when it DOES NOT equal zero.

I cant seem to make that happen....a graphic snapshot would be great.

Thanks

14

General Mach Discussion / Re: TCP ModBus SetUp

« on: February 09, 2013, 06:15:22 PM »

I installed the latest lockdown and it seems to work fine now ......

Thanks for the reponse..

15

General Mach Discussion / TCP ModBus SetUp

« on: February 08, 2013, 08:14:49 PM »

All,

I just attempted to start the TCP Modbus setup and it wont start, any suggestions ?


Windows Vista - Mach3 Version R3.043.022 ...... everything else is workiing fine.

16

General Mach Discussion / Re: Part Offset Touch Button - Strange Behavior - HHHHHmmmmmmm

« on: June 30, 2012, 05:43:39 PM »

Rebooted ...... problem solved, but still strange

17

General Mach Discussion / Part Offset Touch Button - Strange Behavior - HHHHHmmmmmmm

« on: June 29, 2012, 07:49:17 PM »

I just created a buttons for "Part X Offset Touch" and "Part Y Offset Touch" using OEM Codes 139 & 140 respectfully. When I use them it removes 1.000" from the work offset DRO's and adds 1.000" to the Coordinate DRO's but only when "Fixture Coordinates" are being displayed, not "Machine Coordinates". Can someone offer some help, almost seems like there is a global variable set somewhere thats taken into account but I can only speculate.......

Thanks

18

General Mach Discussion / Re: Herky-Jerky Z

« on: June 01, 2012, 07:55:45 PM »

i have dealt with those issues before, they were caused by :

1.) my Gecko drives needed to be tuned, which is why I was wondering what kind of motor drives you had.
2.) when I assembled my machine I grounded the motor drive encoder grounds to the cabinet chassis - it caused noise to affect the step and direction signals and stopped after I disconnected the ground.
3.) the acceleration settings in Mach3 were too agressive.

spend some time to find out how your motors are being driven, follow the wires from the encoders on the motors to where they terminate and find out
what that particular unit is and who makes it. Then investigate to see if it can be adjusted I believe the adjustments are refered to as P.I.D. - Integral, Differential and something else I cant remember at the moment. These adjustments had a really profound effect on motor performance.

19

General Mach Discussion / Re: Herky-Jerky Z

« on: June 01, 2012, 05:01:45 PM »

What kind of "motor drives" are you using ?

20

General Mach Discussion / MPG Modes Acting Strange ?

« on: May 30, 2012, 11:06:37 PM »

I just built an MPG and all seems to work fine except there isnt any difference between STEP/VELOCITY and plain old VELOCITY ONLY modes. I am under the assumption
that STEP/VELOCITY mode is supposed to act like VELOCITY MODE until a certain velocity is reached, then turn into a mode like MULTI-STEP or VELOCITY ONLY depending
on whether you are slowing the axis down or speeding it up.The MPG is interfaced with Mach3 using MODBUS, in case that has an impact on Machs performance. I have also
experimented with the values for the STEP/VELOCITY percentage and it made no difference whatsoever. The axis always act like they are in VELOCITY MODE only, there arent
any definitive STEPS when I would expect to see them, just real slow velocity.

Any suggestions would certainly help me out.....I'm sure there may be others with the same experience.

Thanks