Rockwell Automation 1398-PDM-xxx IQ Master Version 3.2.4 for IA-2000 and IQ-5000 Positioning Drive Modules, IQ-55 - Manual (Page 388)

366 Application Examples • Feed-To-Length Application
Publication 1398-PM601A-EN-P — October 2000
APPENDIXES
TITLE "FEED"
;Version 3.00 2/29/96
;This program implements a Feed-to-Length control with basic features
;such as backup moves, kerf, and registration. It also provides I/O for
;handshaking to the machine such as a cut output, ready and continue
;inputs, and a batch complete output.
;
PGMTYPE = MAINPGM
;Variable name assignments
ASSIGN LENGTH G1 ;Cut length
ASSIGN COUNT G2 ;Batch count
ASSIGN SPEED G3 ;Move speed
ASSIGN ALPHA G4 ;Acceleration
ASSIGN TIME G5 ;Dwell time
ASSIGN KERF G6 ;Saw kerf
ASSIGNBACK_LEN G7 ;Back up length
ASSIGN OUT_LEN G8 ;Anticipation output length
ASSIGN REG_LEN G9 ;Registration length
ASSIGN REL_LEN V31 ;Output length relative to start of move
ASSIGN DIST V32 ;Move distance used in cycle
ASSIGNCORRECT V33 ;Last move distance
ASSIGN SCREEN V34 ;Current operator terminal screen
ASSIGN STATE V35 ;State of the control
ASSIGN CREG_LEN V36 ;Registration length in counts
ASSIGN REG_DIST V37 ;Recorded registration distance
ASSIGN TEMP_CNT V38 ;Temporary counter used for batch count
ASSIGN REG_ERR V39 ;Calculated registration error
ASSIGN READY I10 ;I10 is the Ready input
ASSIGN CONTINUE I12 ;I12 is the Backup/continue input
ASSIGN ANTICIPATE O2 ;O2 is the Anticipate output
ASSIGN CUT O3 ;O3 is the Cut output
ASSIGN BATCH_CMPLT O4 ;O4 is the Batch complete output
ASSIGN BACKUP F1 ;Backup move enable flag
ASSIGN REGISTER F2 ;Registration enable flag
;
;Scanned event S1 turns the anticipate output on when the position
;command exceeds the relative output length
S1:IF @PCMD > REL_LEN ANTICIPATE=ON
;
;This X1 key routine is used to for operator entry of three different
;parameters for the feed to length operation. The actual print and read
;statements used are determined by the variable screen, which indicates
;which menu the operator interface is displaying.
X1:
CLEAR 1
ON SCREEN JMP X1_0,X1_1,X1_2,X1E
X1_0:
READ 1,4 "^D0LENGTH^D1 " ,SHOW LENGTH,7,3(0,999)
PRINT 1,1 "X1:LENGTH" ,LENGTH,7,3
JMP X1E
X1_1:
READ 1,4 "^D0ACCEL^D1 " ,SHOW ALPHA,4,0(0,9999)
PRINT 1,1 "X1:ACCEL " ,ALPHA,4,0
ACCEL=ALPHA
JMP X1E
X1_2:
READ 1,4 "^D0OUT ON^D1 " ,SHOW OUT_LEN,7,3(0,999)
PRINT 1,1 "X1:OUT ON" ,G8,7,3
X1E:
XEND