Experimental Physics and
Industrial Control System

Kevin Peterson via Tech-talk <tech-talk at aps.anl.gov> · Wed, 29 Mar 2023 10:05:46 -0500

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*

**

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System