5i25-7i76 Software encoder for MPG on input pins

I am trying to setup a software encoder using normal IO pins on the 7i76.
All my other pins are set to 24 volts input.

I am assuming that when I set a pin to DigitalX in PNCCONF it sets the pin to 5 volts.
When I try to load the software encoder based on WIKI it is unable to find base-thread.
It looks like PNCCONF does not load or use base-thread.
I am unable to find in PNCCONF where it will configure a software encoder based on I/O pins.
Everything I have looked at for this card assumes the builtin hardware encoder.
How do you setup a software encoder.

A Bit of advice would be great.

Jim

To use the MPG encoder on the 7I76 field I/O pins you first must set the 7I76 field I/O mode to mode 2.
This is done in the driver config line (sserial_port_0=2000xxxx sets the 7I76s field I/O mode to 2)
once this is done, you should have some new hal encoder pins available, for example:

hm2_5i25.0.7i76.0.0.enc0
hm2_5i25.0.7i76.0.0.enc1

or with later linuxcnc versions:

hm2_5i25.0.7i76.0.0.enc0.count
hm2_5i25.0.7i76.0.0.enc1.count

You do not need a software encoder component

ugg when did the pin name change

if you really want software encoders and/ or need a base thread pncconf will not help you. you will need to modify the config yourself.


Chris M

the MPG pin names changed from 2.5 to 2.6 (and added features like simulated index)

PCW,


How many pins does this (sserial_port_0=2000xxxx sets the 7I76s field I/O mode to 2) change. Were are the pins located in the I/O.
Do you have to define two pins, one for A and one for B.


Thanks
Jim

In mode 2:

Note that field inputs 16,17,18,19 are still useable as 24 volt inputs
even in mode2 so if you only have one MPG you don't lose input pins
18 and 19. The threshold as inputs bits is still ~1/2 VField even though the
threshold as MPG A,B inputs is fixed at 2.5V.

PCW,

Thank you this makes sense now.


Jim