Re: Absolute encoder outputs
- From: Spehro Pefhany <speffSNIP@xxxxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 05 Oct 2009 19:54:53 -0400
On Mon, 05 Oct 2009 10:34:25 -0700, the renowned Peter Bennett
<peterbb@xxxxxxxxxxxxxxxxx> wrote:
On Mon, 5 Oct 2009 08:21:38 -0700 (PDT), "Capt. Skinny"
<cannedluncheonmeatobfuscator@xxxxxxxxx> wrote:
I am trying to emulate the single ended output of an absolute encoder
(I have the circuit but not the encoder). The encoder has a pinout
similar to the following:
1 24v supply
2 0v
3 bit 1
4 bit 2
5 bit 3
6 bit 4
7 bit 5
8 bit 6
9 bit 7
The output signal is 5v for high bit, 0v for low bit. I'm not quite
sure how to emulate the encoder's 5v signal to the circuit. Do I use
the signal lines as a sink for a small load @ 5v? If anyone can point
me to some introductory references, it would be greatly appreciated.
Clearly I did not design the circuit, I'm just trying to use it.
Thanks.
An absolute encoder I worked with had open collector outputs, if I
recall correctly - NPN transistors, with emitter grounded, and
collector to the output pin - pull-up resistors to +5V were required
at the receiver.
Frankly, the output is most likely a Gray code.
Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@xxxxxxxxxxxx Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
.
- References:
- Absolute encoder outputs
- From: Capt. Skinny
- Re: Absolute encoder outputs
- From: Peter Bennett
- Absolute encoder outputs
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