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December 08, 2016, 03:13:14 15:13


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Author Topic: Need - Fanuc perforated paper Tape Reader Schematic  (Read 280 times)
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Matrixx
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« on: July 09, 2016, 10:14:33 22:14 »

Hello,

I'm looking for a Fanuc perforated paper Tape Reader schematic. I'm in he process to build an BTR circuit, but would like to well understand the tape reader PCB circuitry before. I have started drawing by hand; removed almost all the IC's to have good tracks view. There is some 6 pin resistor network chips that I didn't find, and looks is two separated resistor circuits as the ohm reading are kind odd.

The goal is to build a Beyond Tape Reader interface for a Fanuc 6M controller, using an Atmega uC.

The tape reader is :     A13B-0070-B001
The tape reader PCB:   A20B-0007-0750/07B

The resistor network below is 6 pin. Pins #5 & #6 looks to be a single resistor 17k, but pins #1 to #4 could be some sort of bridge resistor circuit as the ohm readings are not normal.

Hope someone have the tape reader schematic, to compare. I will upload mine when I finish to trace all the circuits.
Im mostly interested on the 50 pin connector signaling.















« Last Edit: July 09, 2016, 10:24:12 22:24 by Matrixx » Logged
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