help start stop brak program vial lpt

hello

i want control the emc2 over an external keypad to start / stop break the program
like the same keys as pc keyboard (F1 ,F2, R, T, P/S, ESC)
the external keyboard is on lpt the same with the motors
how its possible ?
plz help
im sry for my bad english

You need to add the following line to the [HAL] section in your ini file.
And you need to add the net lines for your keys to your hal file.
For more info:
www.linuxcnc.org/docs/devel/html/man/man1/halui.1.html
www.linuxcnc.org/docs/devel/html/man/man1/iocontrol.1.html

I assumed that your second parport (parport.1) was defined as input device then it's data pins (2..9) can be used for input

okay that works fine
another question is it possible via rs232 to send and recive this signals?
because of not enough i/o ports

You should be able to use up to eight parallel ports with EMC2, so you pretty much are limited to the number of slots on your motherboard. There is nothing "off-the-self" for using RS232 with EMC2, except maybe using an external PLC.
--
Kirk Wallace
www.wallacecompany.com/machine_shop/
www.wallacecompany.com/E45/index.html
California, USA

hello
i know that i can use more paralel ports but my computer on the mill is a portable and have only 1 paralel port
so the question is
is it possible to conect an microcontroler on rs232
can emc2 send for example 9200 baud rs232 an charakter "a" to the microcontroler ?
the microcontroler recive the carakter and show via led that the program is running / paused / breaked

or is it possible to use parport for communication to microcontroler i mean can emc2 toggle a pin of lpt that microcontroler recive 010011011000...

sorry for my bad english i hope anyone understand what i mean

Your situation may be different than mine, but for me, desktop PC's that and run EMC2 well, are nearly free and readily available. I believe each machine should have its own dedicated PC and you should not be temped to use the CNC PC for other things. I prefer microATX boards with three PCI slots, which I think are the best bang for the buck.

The popular FPGA EMC2 controllers use the parallel port for communication, so using the parallel port to communicate with a microprocessor should not be too much of a stretch. ClassicLadder has a serial port Modbus feature that has been used with VFD's. Rumor has it that the serial port can be used with bash scripts, Python or other programing for nonrealtime functions, such as for tool changers, coolant, etcetera. I have used the parallel port to bit-bang SPI ADC's, DAC's and an encoder.
www.wallacecompany.com/machine_shop/EMC2/serial_dac/
www.wallacecompany.com/machine_shop/EMC2/serial_adc/
wallacecompany.com/machine_shop/EMC2/AEAT-6010/

Many PIC or AVR microprocessors have SPI built in, so it should be possible to use this for all sorts of nonrealtime functions.
--
Kirk Wallace
www.wallacecompany.com/machine_shop/
www.wallacecompany.com/E45/index.html
California, USA

Dear Acemi!
I read with great interest this Your message!
I wold like make the same modification to mine machine .
I build my configuration files using wizard for 4 axis and than i add manually the B and C axis.So I have X,Y,Z,A,B,C
This configuration work properly and run well.
On this configuration i have 3 parallel port Lp0,Lp1,Lp2 correctly setted.
Following your example and adding it to mine .hal file for example i have this message error:

Debug file information:
LUCIANO.hal:104:Unknown command' net program-run<=parport.2.pin-06-in'
19681
PID TTY STAT TIME COMMAND
Stopping realtime threads
Unloading hal components

In the .ini file I have
HALUI=halui

Please can You tell me where is my mistake?
For sure this is because i don't have a big experience on EMC2!!
If You need more information about mine .ini and .hal files please advise me!!
Very Thanks for Your help!!!
Kind Regards,
Luciano!!