2080-MOT-HSC HSCE ring counter

[technolog]

I'm trying to set up a ring counter - one that transitions from 3599 to 0 (and 0 to 3599 in the reverse direction). My counter insists on continuing to count up beyond 3599 instead of rolling over. It's working perfectly as a linear counter, counting up and down depending on direction. I've attached various screenshots showing the config and variable values. Can anyone spot what I'm doing wrong?

I know it's showing an error at the moment - it's the result of my latest attempt to alter the HSCE_CFG variables to get it working.

The module is in slot 2 of a 2080-LC50-48QWB.

 

[drbitboy]

Yeah, good luck. The Micro800 line is a hot mess, primarily because the documentation is even worse.

I think I did get ring counting to work once, but I was only counting up.

In your case, the first thing I would do is leave the quadrature can o' worms for later, and instead focus on getting ring counting working on minimal count-up-only and count-down-only applications.

 

[technolog]

I seem to have got it working. I think my main problems were that the HSCE_CFG.InitAccumulator setting cannot be the same as HSCE_CFG.OFSetting or HSCE_CFG.UFSetting and it needs to be inbetween them and also inbetween the HSCE_CFG.HPSetting and HSCE_CFG.LPSetting.

To be able to reset the accumulator to 0, I had to change the .OFSetting to 1800 and the .UFSetting to -1799. I'm not using the counter output but I set the .HPSetting & .LPSetting to nominal positive and negative values respectively.

Actually, having the counter rollover from 1800 (180.0 deg) to -1799 (-179.9 deg) (forward direction) and from -1799 to 1800 (reverse direction) is probably a more elegant solution for my application. So thanks to Rockwell for the terrible information