[mike944]

Ok, i got my machine running. Still trying to tune it, but seems like it runs.

I don't currently have the machine E-stop hooked up to the PC. I know i need to do this, and it's on my "to-do list" but how? I'm using all my regular input pins. i have 4 limit / home switches (XYZA), and a tool probe hooked up. I have no more pins.



Can i use pin 01 as an input to the PC for the E-stop? Or is it only an output? I've read both online. In most parallel port documentation, pin 01 is output only, but in the emc2 documentation it says i can hook an external switch to pin 1. Can i, or is this an error in the docs? I don't want to fry my port.

The last paragraph before the footnotes
"This assumes an ESTOP switch connected to pin 01 on the parport....."

http://www.linuxcnc.org/docs/2.1/htm...r/stepper.html

[mike944]

Nobody knows? Well, i guess i'll have to try it.

Pin 1 is listed as a "control port" along with pins 14, 16 & 17. Do these have to be set as either inputs or outputs as a group? or can they be mixed & matched? (i'm using 14, 16 & 17 as outputs)

In SPP mode (below) it's input/output, which means the hardware must be there to use the pin as an input, the question is, will the software read it?

"SPP" (Standard Printer Port)
http://www.beyondlogic.org/spp/parallel.htm#2

"EPP" (Enhanced Parallel Port)
http://www.beyondlogic.org/epp/epp.htm#2

"ECP" (Extended Capabilities Port)
http://www.beyondlogic.org/ecp/ecp.htm#2

[unterhaus]

you might want to check on the irc channel, this seems like the kind of question that gets cleared up pretty quickly.