thanks for your information. A new software version that includes the laser
controller should be available during next few days (I'm assuming you're using
windows?). Since it is no official/full release it will be a bit experimental
but should do the job.
Regarding the manual: you are right. Currently the documentation assumes a user
has read the RTC manual before and therefore is familar with the requested
parameters and settings. The existing RTC description mainly focuses the HMI
part of the software package. So any sugestion/feedback/contribution to extend
the description is welcome!
On 30 January 2013 at 03:25 Kevin Criqui <kcriqui(a)gmail.com>
For my purposes, sending commands without processing any response is
perfectly fine. I can imagine a high production environment wanting to
take more control of the laser system though.
I'm working with a 15 year old Rofin-Sinar RSM-103D which has a Spectra
Physics T20-BL10-106Q laser inside. It's diode pumped and is rated for
3W average power. It's Q-switched with a ~8nS pulse width which results
in a peak power around 25KW at a 10KHz pulse rate. Fairly impressive
for it's size and marks stainless easily. I've even managed to cut
aluminum foil and mark copper (very very slowly). I may try
extra-cavity doubling the laser to get 532nm which should be much more
effective on copper - half the power, but 100X the absorption.
Anyway, most Spectra Physics lasers use the same or similar RS-232
commands so this should be useful even with more modern machines. I'm
pretty sure most current, diode pumped lasers will have some level of
control over a serial (or USB) port.
FWIW, I run a one-person company called Starlight Photonics and make my
living selling laser stuff on eBay as seller id Junktronix. I'm hoping
to contribute to the project by expanding on the RTC configuration
section of the documentation which assumes familiarity with the RTC and
is still quite confusing to me.
On 1/28/2013 10:00 PM, Jim Hart wrote:
> thanks for the feedback.
> Currently we're thinking about implementation of a generic laser controller
> plug-in where you can set these commands manually. When no reaction on the
> lasers response is necessary this would work without problems.
> Just for my personal interest: what laser are you using? May be it worth to
> a laser type specific plug-in too...
> Kind regards
>> On 29 January 2013 at 04:56 Kevin Criqui <kcriqui(a)gmail.com> wrote:
>> That would be great. Right now I open a terminal emulator and type the
>> commands by hand. There are a few commands needed to get the laser
>> ready after being powered on and then one command before and after each
>> mark. I can imagine it being useful to have the ability to read and act
>> on the response from the laser, but that is not a requirement.
>> Here are the commands needed at power on to turn on the laser in standby
>> c1:2560 [set diode current to 25.6A]
>> m3 [set system to standby mode]
>> d1 [turn on diode]
>> before each mark, I send the command
>> m0 [set system to run mode]
>> and after each mark
>> m3 [set system to standby]
>> Commands that produce a response which could be useful include
>> ?c1 [returns diode current]
>> ?t1 [returns diode actual temperature]
>> ?x31 [returns diode set temperature]
>> ?x61 [returns diode hours]
>> ?p [returns laser power (on some systems)]
>> I'm not much of a coder, but I am more than happy to test and report my
>> On 1/27/2013 10:24 PM, Jim Hart wrote:
>>> Hi Kevin,
>>> there is an interface available that gives the possibility to link a laser
>>> controller to the project which can be used to send commands to a laser.
>>> Currently only the interface exists but no related plug-in that could
>>> commands to be sent. That's simply because nobody requested it until
>>> So we would add a generic serial interface plug-in for controlling the
>>> you. So what would you need exactly:
>>> - a possibility to choose and configure the serial port
>>> - a possibility to send a freely configurable ASCII (?) command to the
>>> the beginning and end of a marking cycle
>>> - what additional commands could be useful/imaginable here?
>>> Kind regards
>>>> On 28 January 2013 at 10:48 Kevin Criqui <kcriqui(a)gmail.com>
>>>> I'm working with a marking machine that has a Spectra Physics
>>>> T20-BL10-106Q laser and a Scanlab RTC4 controlling a Scanlab scanhead.
>>>> Everything is working pretty well, though I still have lots to learn.
>>>> One thing I'd like to do that I haven't figured out yet is to
>>>> command to the laser over the PC's serial port at the beginning and
>>>> of each marking job. Specifically, I want to send the command to put
>>>> the laser in run mode at the beginning and standby mode at the end. Is
>>>> there any way to do this?
>>>> openapc mailing list
>>> Kind regards
>>> Jim Hart
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> Kind regards
> Jim Hart
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