Bridgeport Series II Interact 2 Conversion

I can't reference ERO 115 - all the ERO I can find are 4 digits numbers. Are you sure the model number is right?

Anyways before buying a converter box you must figure out if it uses current signals (11micro amp peak to peak) or voltage signals (1 volt pp)
EXE converts current , IBV converts voltage (and are harder to find)

Does your original converter board have a serial number? I wonder how hard it would be to figure out the outputs from it.
Also your MPG's are probably analog as well so you would need to buy a converter for them or buy new TTL outputing ones.

The one on my Z-Axis is stamped:
ERO 115 125 D12.
Id.Nr. 217 900 D4

I've dug around and found snippits of info that point to it being a 11uApp device. Here's a thread for an ERO similar to mine.

I can't find official docs from Heidenhain out there either. A couple of leads point to cncrotary.com or call Heidenhain directly.

Plan A is to re-use the original control board, Plan B is the EXE devices.

Jay

it seems that the ERO 115 is an 11 micro amp signal encoder, according to another linuxcnc user:
www.linuxcnc.org/index.php/english/compo...iew&catid=27&id=1589

he actual has the specs if you can get a hold of him..maybe his email is still valid.
There is also another fellow on that thread that just used the original converter board - there is a pic....

cmorley wrote:

it seems that the ERO 115 is an 11 micro amp signal encoder, according to another linuxcnc user:
www.linuxcnc.org/index.php/english/compo...iew&catid=27&id=1589

he actual has the specs if you can get a hold of him..maybe his email is still valid.
There is also another fellow on that thread that just used the original converter board - there is a pic....

Hah! not 1 hour before I read this I found that thread and sent an email - hopefully he's still in touch.

I have the same machine but it originally had a Heidenhain TNC151 controller. Attached is some info on the encoders. I corresponded with Heidenhain about them a bit. I would recommend getting 602 boxes for them. I used 602D/5 boxes. They were $50 apiece on ebay and it kept my original controller intact. If you do want to go the route of using the original encoder board, I have some info on that too but it's somewhat involved and there are no guarantees. I don't know what your electrical skills are like but if you're uncomfortable with that, the 602 boxes are an easy solution. image missing http://www.linuxcnc.org/media/kunena/attachments/legacy/images/pinlayout11microampsx800.jpg

Maxvdh,
Good information. Do the 602D boxes work with the Handwheel as well - or is that a digital signal already?

I just borrowed a scope from a friend and as soon as I get out from under tax season I'm back on this. My electrical skills are definitely rusty as I haven't done any deep dives like this for some twenty years. It's tempting to use the 602 boxes and sell the TNC145 on eBay.

Jay