asynMotorAxis

["Koennecke Mark \(PSI\) via Tech-talk" <tech-talk at aps.anl.gov>]

Hi,

I am writing a motor driver for an old piece of french equipment called EuroMove. 
This is going well. But the thing does not implement homing in the controller. I try
to implement this in the asynAxis driver. To that purpose, I need the motor resolution. 
It is in principle there, in the MRES field of the motor record.  I tried:

pC_->getDoubleParm(axisNo_, pC_->motorResolution_, &resolution);

but this gave me a 0 instead of the .01 to which the MRES field had been configured in the 
motor substitutions file. I know the record sees this because the conversion for physical 
units to motor steps is working. 

I also tried motorEncoderRatio_ which returned infinity. 

My question now is how I can get at that information in an asynMotorAxis driver?

Or is my only option to write a configuration command or axis creation command which 
passes the resolution value in?

This is against base3.14.12 and motor6.9 on RHEL7 linux. 

Best Regards,

     Mark Koennecke