UM1691 datasheet(37/41 Pages) STMICROELECTRONICS

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UM1691

General description

Various application command examples

18. Motor moves by 60,000 steps forward | Move (DIR, N_STEP)

19. Wait until not busy - busy pin test (L6470 pin 22).

20. Send L6470 command setting hold duty cycle to 0.5%, send L6470 command

changing run duty cycle to 5% | SetParam (PARAM, VALUE)

21. Motor runs at constant speed of 50 steps/s in reverse direction | Run (DIR, SPD)

22. Motor softly stops after a few seconds | SoftStop

23. RESET KVAL_HOLD to initial value, RESET KVAL_RUN to initial value | SetParam

(PARAM, VALUE)

24. Wait until not busy - busy status check in Status register | GetStatus

25. Motor moves by 100,000 steps forward | Move (DIR, N_STEP)

26. Wait until not busy - busy status check in Status register | GetStatus

27. Test of the Flag pin (L6470 pin 24) by polling, wait in endless cycle if problem is

detected.

28. Motor moves to its home position | GoHome

29. Wait until not busy - busy pin test (L6470 pin 22).

30. Motor goes to absolute position 65535 through the shortest path | GoTo (ABS_POS)

31. Wait until not busy - busy pin test (L6470 pin 22).

32. Motor goes in forward direction to absolute position 131071 | GoTo_DIR (DIR,

ABS_POS)

33. Wait until not busy - busy pin test (L6470 pin 22).

34. Read run duty cycle (dSPIN_KVAL_RUN) parameter from L6470, read intersect speed

(dSPIN_INT_SPD) parameter from L6470 | GetParam(PARAM)

35. Read Status register content | GetStatus

36. Read absolute position (dSPIN_ABS_POS) parameter from L6470 |

GetParam(PARAM)

37. Reset position counter, actually | ResetPos

38. Read absolute position (dSPIN_ABS_POS) parameter from L6470 |

GetParam(PARAM)

39. L6470 disable power stage (High Impedance) immediately, as a consequence the

motor supply current drops | HardHiZ.

UM1691 датащи(PDF) 37 Page - STMicroelectronics