On 03/02/2017 08:14 AM, Chris Radek wrote: > On Wed, Mar 01, 2017 at 01:44:34PM -0500, Ken Strauss wrote: >> I recently got a Renishaw MP7 IR probe from eBay. Has there been any further >> success with reverse engineering the interface? According to the manual that >> came with my probe it is turned on/off by briefly spinning it at 500 rpm to >> actuate an internal centrifugal switch. It uses a standard 9v battery. The >> recommended interface box is an MI7 + OMM. There are reasonably priced MI7 >> on eBay but the OMM listing are about $1000! > Weird - I'm pretty sure mine is a MP7, and it is turned on and off > with a signal over the IR. I have the OMM+MI7 interface. > > Of course to receive the signal, some part of it has to be alive all > the time, but it isn't sending and the battery lasts a good while. > > I have never spun it. The very idea makes me shiver. > > 500 RPM doesn't sound too dangerous, but have the machine in the wrong gear, and "OOPS!" Yeah, that was the hardest thing to figure out on the Blum probe, how to turn it on???? I also expected there'd be a turn on code and a turn off code, but as far as I could tell, it takes a burst of pulses at a particular rate for about 1/4 second to toggle it from on to off. Once I got it turned on, the data pattern was pretty obvious.
One thing you want to do is detect loss of data from the probe, and set feed hold. Jon ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
