Danfoss MCO 305, Design Manual, Page: 29 / 242

MCO 305 Design Guide
__ Functions and Examples __
MG.33.L4.02 – VLT
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29
SYNCP // Start position synchronizing mode
old_offset = GET SYNCPOSOFFS
WHILE (IN 1 == 1) DO // Stay in synchronizing mode while input 1 = 1
IF (IN 4 == 1) THEN
GOSUB increase_offset
ELSEIF (IN 5 == 1) THEN
GOSUB decrease_offset
ENDIF
IF (SYNCSTAT & 4) THEN
OUT 1 1
ELSE
OUT 1 0
ENDIF
ENDWHILE
MOTOR STOP // Stop if input 1 is low.
home_done = 0 // Reset home_done flag after stop
OUT 1 0
OUT 2 0 // Reset home done output after stop
IF (new_offset != old_offset) AND (GET 132 == 0) THEN // Save absolute offset if changed
SAVE AXPARS // NOTE: Saving more that 10000 times can damage flash PROM
ENDIF
ENDIF
GOTO MAIN
/*************************** Sub programs start *********************************/
SUBMAINPROG
/***************************** Increase offset **********************************/
SUBPROG increase_offset
IF (Next_step) THEN // Check if next offset step is enabled
IF (GET 1901 == 0) THEN // Absolute offset
new_offset = old_ GET 1900 // Read existing offset and add step value
SET SYNCPOSOFFS new_offset // Set new position offset
ELSE // Relative offset
MOVESYNCORIGIN GET 1900 // Execute relative offset with offset step
ENDIF
ENDIF
Next_step=0 // Disable next offset step
ON TIME 500 GOSUB Enb_Step // Enable next offset step after 500 ms
RETURN
/*************************** Decrease offset ***********************************/
SUBPROG decrease_offset
IF (Next_step) THEN // Check if next offset step is enabled
IF (GET 1901 == 0) THEN // Absolute offset
new_offset = GET SYNCPOSOFFS - GET 1900
// Read existing offset and subtract step value
SET SYNCPOSOFFS new_offset // Set new position offset
ELSE // Relative offset
MOVESYNCORIGIN (- GET 1900) // Execute relative offset with - offset step
ENDIF
ENDIF
Next_step=0 // Disable next offset step
ON TIME 500 GOSUB Enb_Step // Enable next offset step after 500 ms
RETURN
/************************* Enable new offset step *******************************/