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G1K
07-08-2009, 09:59 PM
I hope someone in the group has some experience with the mitutoyo glass scales. I have acquired a mill that came with a mitutoyo DRO, but one of the scales is missing the cable. Rather than spend the $125 on a replacement cable, I'm going to fab one. The only problem, I don't know the pinout on the scale itself. I have taken a pic of the guts of the unit, there's 5 wires: Black, Brown, Red, Orange and Yellow. I know these translate to +5vdc, A phase, B phase, ABS and 0v. I just don't know which wire corresponds to which signal. Anyone know, or have a method to find out that won't risk harming the scale?

http://i531.photobucket.com/albums/dd358/gonekayatgmailcom/mitutoyo01.jpg

TIA,
Ryan

lakeside53
07-08-2009, 10:04 PM
I'd also like to know the pinout... I have a mitutoyo head with 6 pin round connectors that I'd like to adapt to anilam scales.

G1K
07-08-2009, 10:14 PM
Here's the pinout at the end of the cable that plugs into the display:

http://i531.photobucket.com/albums/dd358/gonekayatgmailcom/mitotoyo02.jpg


What I don;t know is on the scale, which pin is 1, and does the cable keep 1 to 1, 2 to 2 etc, or do they switch?



Ryan

lakeside53
07-08-2009, 11:27 PM
Thanks! Sorry I can't help with your problem...

kvom
07-09-2009, 11:44 AM
Can't you use the other scale as a model?

G1K
07-09-2009, 12:10 PM
Can't you use the other scale as a model?

That's a good idea, the problem I think I may run into is the other longer scale is not the same model. I know for sure it does not have the same style connector on the scale, I think it's hard wired. I'll open it up tonight and have a look.

I'll post back my findings.

Ryan

LMSC
07-10-2009, 07:56 PM
Here's the pinout at the end of the cable that plugs into the display:

http://i531.photobucket.com/albums/dd358/gonekayatgmailcom/mitotoyo02.jpg


What I don;t know is on the scale, which pin is 1, and does the cable keep 1 to 1, 2 to 2 etc, or do they switch?



Ryan

Yes Mitutoyo keeps the wiring same from the display connector to the encoder connector. I think that the connector has the numbers on it so your drawing of the 0.005 is the correct drawing.

Regards,
Tim

G1K
07-11-2009, 10:09 PM
Thanks everyone for the ideas and confirmation that the wires run 1 to 1.

The longer scale was not the same, so this info pertains only to the AT2 series.

For the AT2-N300 the wires on the inside of the reader box are

Black = 0V
Yellow = ABS
Orange = B
Red = A
Brown = +5V

I got it wired up tonight and everything works as it should.

Hope this may help someone in the future.

R