Cannot use pins 2 - 9 as inputs, only outputs.

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02 Dec 2018 01:55 #121697 by Emanresu
Hello rodw.

I dont use a BOB. Im talking about the parport itselfe.
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02 Dec 2018 02:35 #121698 by rodw
I think its the same but its been 30 years since I made my own BOB and controlled it by writing to the parallel port. (non CNC application)
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02 Dec 2018 05:51 #121703 by Emanresu
You never used a BOB but its 30 years ago since you made and wired your own one?

Doesnt matter...
I DONT use one. I run a MESA 6i25.
Now i wona combine my parport in "IN" mode
but pin 2-9 doesnt change.
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02 Dec 2018 15:29 #121715 by Todd Zuercher
Which are you using a parallel port or a Mesa card?
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02 Dec 2018 15:35 - 02 Dec 2018 15:36 #121716 by Emanresu
Both!

I use 3 axes + spindle + linear scales on a 7I85s.
Now i wona put a handwheel on my free parallel port.

Machine is a DIY with HSK63 Spindle.
So i also need more inputs for a toolchange.
Thats why i wona have it configured as "IN"
Last edit: 02 Dec 2018 15:36 by Emanresu.
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02 Dec 2018 16:19 #121718 by Todd Zuercher
What if any daughter cards do you have for the 6i25? Maybe it would be better to attach your handwheel to that.

Perhaps you may need to add external pull up resistors to your inputs on the parallel port.
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02 Dec 2018 17:44 - 02 Dec 2018 17:46 #121723 by jmelson

Emanresu wrote: Now i wona combine my parport in "IN" mode
but pin 2-9 doesnt change.

What type of parallel port are you using? Plug-in card or on the motherboard?
If on motherboard, you may have to make a selection on the BIOS setup screen to enable
bidirectional (PS/2) mode.

If a plug-in card, it should do this, but some cards from the 1990's - 2000's needed to have a
setup utility run on them. Almost any plug-in card since 2000 should support this without any
special stuff.

And, finally, the parport driver in LinuxCNC needs a setting on the loadrt command line to
select bidir or input modes. If you specify that command wrong, it will default to output, and
you MAY NOT get any error message.

Jon
Last edit: 02 Dec 2018 17:46 by jmelson.
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05 Dec 2018 14:13 #121873 by andypugh

Emanresu wrote: I use 3 axes + spindle + linear scales on a 7I85s.
Now i wona put a handwheel on my free parallel port.


TB1 pins 1 to 8 are a serial expansion port.
Plugging a 7i73 card in to that would give you 4 encoder / handwheel counters, drivers for a 64-key matrix-wired keypad, 8 inputs, 6 outputs and 8 analogue inputs. All for $50 and connected by a single CAT5 cable.
store.mesanet.com/index.php?route=produc...83_88&product_id=116
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05 Dec 2018 14:16 #121874 by andypugh

andypugh wrote: Plugging a 7i73 card in to that would give you 4 encoder / handwheel counters, drivers for a 64-key matrix-wired keypad, 8 inputs, 6 outputs and 8 analogue inputs.


Oh, and also an LCD: photos.app.goo.gl/fE7cWNHZshTihdUa9
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