DB25I/O and software

[pminmo]

I know a number of different software packages can configure parrallel port I/O pin assignments. Is there some default that has manifestested itself. i.e. Xstep is pin 3, Spindle control is pin 1, X limit is...........

Phil

[snaggletto]

Not really any standard configuration. Some are very configurable like Mach2 others like Linux EMC is hardcoded for the step/dir signals. Keep this in mind if buying a breakout board, as some breakout boards are configurable and some aren't.

For example, the Campbell Designs breakout board is hardwired and requires software that is configurable. It will work great with Mach2 but not Linux EMC and many others. The PMDX 120 breakout board is jumper selectable for MANY different software configurations. It will work well with Mach2, Linux EMC as well as most of the DOS based programs.

Why do you ask?

[pminmo]

Part of the elvoving effort here:
http://cnczone.com/forums/showthread.php?t=5390

Linux EMC, where can I find a pin definition.

THanks,
Phil

[tachus42]

from the emc handbook http://emc.sourceforge.net/Handbook/Handbook.html
the docs hint you can change the mapping, it is probably in a config file somewhere

IO Pin Function
Step/Dir
D0, pin 2 X direction
D1, pin 3 X clock
D2, pin 4 Y direction
D3, pin 5 Y clock
D4, pin 6 Z direction
D5, pin 7 Z clock
D6, pin 8 A direction
D7, pin 9 A clock
C0, pin 1 B direction
C1, pin 14 B clock
C2, pin 16 C direction
C3, pin 17 C clock
S3, pin 15 X/Y/Z/ lim +
S4, pin 13 X/Y/Z/ lim -
S5, pin 12 X/Y/Z/ home
S6, pin 11 Probe
S7, pin 10 spare

[pminmo]

thanks tach.

Phil