100 Step MPG - reverse dial direction

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Jay
Posts: 33
Joined: Tue May 17, 2011 2:30 pm
Allin1DC CNC Controller: Yes
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: Yes
CPU10 or CPU7: No
System Serial Number: A900438
Location: Okotoks, Alberta

100 Step MPG - reverse dial direction

Post by Jay » Tue Jun 06, 2017 11:16 am

Hi, This may be an 'out in left field' question, but is there way to reverse the dial direction on the Ajax supplied MPG.

My Bridgeport S2I2 has jog sticks and a matching MPG that mimic table movement rather than head movement. The MPG of which to be replaced by the Ajax 100-step MPG. However the old MPG and new one rotate in opposite direction to achieve +/- movement. I'd like to reverse the direction on the 100-step to keep it matched to the original MPG. Is this a software change, or something like a A/A' B/B' swap?

Thanks

Jay
Okotoks, Alberta

Centroid_Tech
Posts: 120
Joined: Thu Mar 18, 2010 2:24 pm

Re: 100 Step MPG - reverse dial direction

Post by Centroid_Tech » Wed Jun 07, 2017 8:30 am

Jay,

Unfortunately, there isn't anything that can be done in the CNC software to reverse the direction of the MPG encoder signals. You will have to physically swap the A signal with the B signal and the /A signal with the /B signal.

Jay
Posts: 33
Joined: Tue May 17, 2011 2:30 pm
Allin1DC CNC Controller: Yes
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: Yes
CPU10 or CPU7: No
System Serial Number: A900438
Location: Okotoks, Alberta

Re: 100 Step MPG - reverse dial direction

Post by Jay » Sat Jun 10, 2017 9:10 am

Thanks, I'll give the A>B and A/->B/ swap a try see how it works.

Jay
Okotoks, Alberta

Jay
Posts: 33
Joined: Tue May 17, 2011 2:30 pm
Allin1DC CNC Controller: Yes
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: Yes
CPU10 or CPU7: No
System Serial Number: A900438
Location: Okotoks, Alberta

Re: 100 Step MPG - reverse dial direction

Post by Jay » Tue Aug 01, 2017 8:52 pm

Whoop's!
..just noticed the new Allin1dc manual shows two different ways to wire up the MGP - check out the A/A+/B/B+ connector pin locations on page ~115 ( the ALLINONEDC Cables Schematic) - then compare it to the ALLINONEDC Connectors on page ~139

so.. which is the right way - so I can reverse it for my application.

Thanks
Jay
Okotoks, Alberta

Centroid_Tech
Posts: 120
Joined: Thu Mar 18, 2010 2:24 pm

Re: 100 Step MPG - reverse dial direction

Post by Centroid_Tech » Wed Aug 02, 2017 10:41 am

I am a little confused. Attached are the photos from pages 115 and 139 of the ALLIN1DC installation manual and the encoder pinout on both pages are exactly the same. The only difference is that on one page the signal's compliment is designated with a backwards slash, \, while on the other page it is designated with a dash, -. Please clarify where you are seeing the signal incompatibility.
Attachments
ALLIN1DC Encoder Pinout.docx
(141.18 KiB) Downloaded 9 times

Jay
Posts: 33
Joined: Tue May 17, 2011 2:30 pm
Allin1DC CNC Controller: Yes
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: Yes
CPU10 or CPU7: No
System Serial Number: A900438
Location: Okotoks, Alberta

Re: 100 Step MPG - reverse dial direction

Post by Jay » Wed Aug 02, 2017 12:33 pm

Yeah - the pages numbers were confusing. I was using the pages numbers from the PDF Reader, rather than the doc directly.
Here's the screen shots
C2.PNG
C1.PNG
Okotoks, Alberta

Centroid_Tech
Posts: 120
Joined: Thu Mar 18, 2010 2:24 pm

Re: 100 Step MPG - reverse dial direction

Post by Centroid_Tech » Wed Aug 02, 2017 1:31 pm

I apologize. I was looking into the encoder signals rather than the MPG encoder signals. The signals on the ALLIN1DC board layout are the correct signals. Pin 1 of the MPG connector starts with +B then -B then +A then -A.

Jay
Posts: 33
Joined: Tue May 17, 2011 2:30 pm
Allin1DC CNC Controller: Yes
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: Yes
CPU10 or CPU7: No
System Serial Number: A900438
Location: Okotoks, Alberta

Re: 100 Step MPG - reverse dial direction

Post by Jay » Wed Aug 02, 2017 2:07 pm

Awesome! - thanks for the clarification!

Jay
Okotoks, Alberta

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