Do you have it wired up as TTL? John
On 6/11/2012 11:44 AM, Brian May wrote: > that is the correct encoder. I just verified the part number on the > encoder itself. It was working for measuring RPM with the jumper in the > TTL position (Where it has been the whole time). I just moved it to the > Differential position and it still measures rpm fine. But, the index is > still not working for the threading... However, I am learning this as I go > and not sure if I need to do something different since it is a differential > line driver type encoder? > > Thanks for the help > Brian > > On Sat, Jun 9, 2012 at 8:40 PM, Dave<[email protected]> wrote: > >> Except that the encoder is not a TTL output encoder but a differential >> line driver model encoder: >> >> >> http://www.automationdirect.com/adc/Shopping/Catalog/Sensors_-z-_Encoders/Encoders/Medium_Duty_Standard_Shaft_%28TRD-N_Series%29/TRD-N1024-RZVWD >> TRD-N1024-RZVWD<http://www.automationdirect.com/adc/Shopping/Catalog/Sensors_-z-_Encoders/Encoders/Medium_Duty_Standard_Shaft_%28TRD-N_Series%29/TRD-N1024-RZVWD%0ATRD-N1024-RZVWD> >> >> Brian are you sure this is the correct part number for your encoder? >> Automation Direct sells a very similar encoder but with single ended TTL >> outputs. >> >> The jumpers on the Mesa card has to correspond to the encoder type >> (differential line driver or TTL) otherwise nothing will work right. >> >> Dave >> >> >> >> On 6/9/2012 3:08 PM, Peter C. Wallace wrote: >>> On Sat, 9 Jun 2012, Brian May wrote: >>> >>> >>>> Date: Sat, 9 Jun 2012 12:21:08 -0600 >>>> From: Brian May<[email protected]> >>>> Reply-To: "Enhanced Machine Controller (EMC)" >>>> <[email protected]> >>>> To: "Enhanced Machine Controller (EMC)"<[email protected] >>>> Subject: Re: [Emc-users] Lathe Threading >>>> >>>> Low Level is 220mv >>>> High Level 3.12 Volts >>>> >>> Well thats valid TTL so OK (as long as the 7I33 inputs are jumpered for >> TTL >>> in) >>> >>> So the next step in tracing it is is to see if the GPIO for Z bit is >> visible >>> in halmeter when you do the same test >>> >>> >>> with a 1024 line encoder you will likely miss the index with HALScope on >> the >>> GPIO bit above 60 RPM, so a real scope would really help in case you are >>> losing the signal above a certain speed >>> >>> Peter Wallace >>> >>> >>> >> ------------------------------------------------------------------------------ >>> Live Security Virtual Conference >>> Exclusive live event will cover all the ways today's security and >>> threat landscape has changed and how IT managers can respond. Discussions >>> will include endpoint security, mobile security and the latest in malware >>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >>> _______________________________________________ >>> Emc-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >>> >> >> >> ------------------------------------------------------------------------------ >> Live Security Virtual Conference >> Exclusive live event will cover all the ways today's security and >> threat landscape has changed and how IT managers can respond. Discussions >> will include endpoint security, mobile security and the latest in malware >> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
