Motor Power Company DUET_FL 48/10, Руководство пользователя

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Page 82
NEXT1 NEXT2
neither NEXT1
nor NEXT2
POS A POS B
line n
line n +1
Figure 18: Course program - Position branch
If the digital signal NEXT1 is set to HIGH (rising edge), position A will be approached. If the digital
signal NEXT2 is set to HIGH (rising edge), position B will be approached. If the program cannot detect
any rising edges, the course program will remain in a waiting state.
If neither Evaluate NEXT1 nor Evaluate NEXT2 have been selected, the drive will always approach
the position set under NEXT1. Thus, a linear positioning run (e.g. POS1  POS2  POS3) can be
performed.
In Figure 19 it is assumed that a positioning run will be started in program step 10. When the
positioning run is started (10), the course program switches to the next line, program step 11.
If we assume that NEXT1/2 has been set to "Complete position, then target", the inquiry of the
NEXT1/2 inputs takes place at the far end of the program step when the "target reached" message has
been activated. However, the system also evaluates the edges that have been detected since the start
of the positioning run. If the "target reached" signal has been set but the system has not detected a
rising edge of NEXT1/2, the program will remain in program step 11 until at least one edge of NEXT1/2
is detected.
program step 10 program step 11
program step
positioning
target reached
edge NEXT1/2
recognized
go to position (program step 10)
new
position
DOUT1/2=high/low
DOUT1/2 high/low
program step 10
DOUT1/2 high/low : program step11
DOUT1/2=
target reached /
remaining distance
target reached / remaining distance
(positioning program step 10)
activities
course program
start
new position
NEXT1/2
evaluate
calculate
new branch destination /
new positioning
Figure 19: Position branch time diagram
User Manual DUET_FL „DUET_FL 48/10“ Version 1.1 Motor Power Company