Re: Request for support: Error reading data in Epics Controls while modifying project

[Kevin Peterson via Tech-talk <tech-talk at aps.anl.gov>]

Grzegorz,

Which version of motor and motorPhytron are you using?

Kevin


On 3/27/23 09:13, Grzegorz Lak via Tech-talk wrote:
> Good morning,
> I am asking you for support in solving the problem we encountered while 
> modifying our project. We've noticed an error reading data in Epics 
> Controls and I need help fixing it.
>
> The modification of the project consisted in reducing the number of 
> supported stepper motors and did not include changes in the mechanics of 
> the program's operation. When testing on the first two controllers, the 
> same problem was obtained with reading the encoder counts. The encoder 
> count reading is correct only in one direction, while in the opposite 
> direction, when the measured displacement goes through "0", it 
> immediately changes to a number corresponding to -2^31. Phymotion 
> "Phylogic" software was used to test the functionality of the hardware: 
> a stepper motor and an incremental encoder - the tests were successful.
>
> PV type: motor
>
> file "db/Phytron_motor.db"
> {
> patterns
> {P, N, M, DTYP, PORT, ADDR, DESC, INIT, EGU, DIR, VELO, VBAS, HVEL, 
> VMAX, ACCL, BDST, BVEL, BACC, MRES, ERES, RDBD, RCNT, PREC, DHLM, DLLM , 
> UEIP}
> {PHYIOC:, 1, "m$(N)", "asynMotor", phyMotionPort, 11, "motor $(N)", "", 
> urad, Pos, 50, 60, 60, 160 .4, 0, 100 , .2, 0.05, 0.010, 0.100, 10, 3, 
> 8100, -8100, 1 }
> }
>
> file "db/Phytron_I1AM01.db"
> {
> patterns
> {P, N, M, PORT, ADDR, SCAN, TIMEOUT, INIT, INIT_TIME, POS_TIME, HOMING, 
> MODE, POS_OFFSET, NEG_OFFSET, SWITCH_TYP, PWR_STAGE, ENC_TYP, ENC_SFI, 
> ENC_DIR, STOP_CURR, RUN_CURR, BOOST_CURR, BOOST, CURRENT_DELAY, HOPR , 
> HIGH, HIHI, STEP_RES, PS_MON, MRES }
> {PHYIOC, 1,":m$(N)", phyMotionPort, 11, "1 second", 3, YES, 20, 20, 2, 
> 1, 0, 0, 4, 1, 1, 0, 0, 50 , 1200, 1200, 0, 20, 1210, 1210, 1210, 1, 1, 
> 0.05 }
> }
>
> Thank you in advance for taking the time to consider my request.
> > Kind regards,
> >
> > *Grzegorz Lak*
> >
> > **