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Messages - krisverheyen

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General Mach Discussion / Re: tcp modbus setup
« on: January 10, 2008, 04:45:05 PM »
Thank you,
I got it working allready now.
Time to start writing a big (or several) brain(s)

General Mach Discussion / tcp modbus setup
« on: January 09, 2008, 08:54:48 AM »
Hello All,

It has been a while that i had setup my plc. I have 64 inputs and 64 outputs, and several analog I/O. i also have a serial port extension. On the plc there's a routine that emulates a serial modbus. This system works, but i bought the system in this way so that it would enable me to migrate to tcp-modbus, when it became supported. (the device has tcp-modbus a primary interface).

Since tcp-modbus is now an option i'd like to use it that way. But i does not work at the moment, and some things are not clear to me. I checked out the wiki and the modbus video's but still no light in the dark.

In the serial modbus configuration a had the checkbox 'use each input word as 16 bits of bitmapped input instead of mapped inpumax of 64 bits' enabled. Since such a setting is not available in modbus setup, i'm not shure what to do. Furthermore, in ports&pins one adresses the modbus using port zero. i.e. port 0,pin 8, was set as the X-homing input, wich corresponded to the 8th digital input on my plc. Has this changed? do i need a brain to setup ports&pins for mach?

In tcp test mode, i CAN connect to the tcp-modbus and change data read in when actuating the inputs! so that is OK!
is it config or is it that i need a brain-control (maybe i just need a brain for me!).

Help would be greatly appreciated.

Mach3 and G-Rex / Re: Driving a galvo head with Grex possible?
« on: August 30, 2007, 03:51:04 AM »
Hey Chad,
Thanks for your reply.
The mirrors are not stepper driven.
We have a head from scanlabs, something like this : http://www.scanlab.de/index.php?id=17919
It is controlled by 2 analog voltages wich relate to there position, i.e. 0V on axis1 completly to the right and 12 V would be at your leftt side. 6V would point to the center of the field.
Actually it might be that the electronics inside the head are closed loop, but when controlling with the normal program, there are settlng times (like 0.4 ms).
what i wanted to do make a program like this
G0 X10 Y10
G04 F0.4
M10(laser on)
G1 X70Y50 F400 (in mm/s)
G04 F0.1
M11 (laser of)

This is comparable with how the galvo's are controlled at the moment. (i took the liberty of studying a dissasembly of there driver, i can read, but i cannot create ... damn).

Do you know if a G04 with just 0.4 ms could work?, or does that get rounded to 0 or 1 ms

To pulse the laser there are even times like 40┬Ás, but that i can solve with some extra hardware. ( a custom timercard)



Are you gonna write this plugin, or is someone else doing this.
Do you sell this hardware, once the plugin is finished, or will you make it able to download all the schematics ,the  microcontroller program, etc.
I'm not in direct need of this, but reading this post gave me some idea's.


Is there any progress in developing this movement recording ...
Just curious,

General Mach Discussion / Re: event driven serial control and modbus
« on: July 30, 2007, 05:08:05 AM »
Yeeeessssssss, it works (dance around, dance around) stiiirike!

Thanks very much!!!
You saved me hours of work!


General Mach Discussion / Re: event driven serial control and modbus
« on: July 24, 2007, 06:27:15 PM »
Hey thanks,
I'll give it a go when i get back on the job.
I'm on vacation right now.
Just movin from time to time to get the same color in front and back ;D


General Mach Discussion / Re: event driven serial control and modbus
« on: July 13, 2007, 10:35:03 AM »
I'll have to find a other solution.

General Mach Discussion / Re: event driven serial control and modbus
« on: July 13, 2007, 10:07:05 AM »
Any chance i can get an answer about my problem?

General Mach Discussion / Re: event driven serial control and modbus
« on: June 27, 2007, 05:36:51 PM »

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