Re: using motor / steppermotor record for Trinamic TMCM-351 controller

[Ron Sluiter <sluiter@aps.anl.gov>]

On 07/15/2015 03:20 AM, Christian Pauly wrote:

In the documentation of motor record, it says: "The following controllers are supported IN ADDIDION TO SOFT CHANNEL SUPPORT".
What is meant with this ?

"Soft Channel support" refers to EPICS device level support where there is no underlying hardware. All of the device support provided with EPICS base is some variation on "Soft Channel" device support.  For example, in the devSoft.dbd or softIoc.dbd files located in <base>/dbd you will find ;

devSoft.dbd:device(aai,CONSTANT,devAaiSoft,"Soft Channel")
devSoft.dbd:device(aao,CONSTANT,devAaoSoft,"Soft Channel")

devSoft.dbd:device(ai,CONSTANT,devAiSoftRaw,"Raw Soft Channel")
devSoft.dbd:device(ao,CONSTANT,devAoSoftRaw,"Raw Soft Channel")

The EPICS motor module also has Soft Channel device support. There is a tangent arm example here in the EPICS motor module document.

Ron