Program Example - Mitsubishi Electric Melsec FX Series Beginners Manual

FX2N-1PG-E positioning
4.3.3

Program example

In the example that follows, a two speed positioning instruction is used to move a drill 100 mm toward
a block of wood with a high speed pulse frequency of 40 kHz. When the drill reaches the wood, the
speed decreases to 10 kHz. The drill is then driven for 50 mm into the wood before decelerating to
stop.
Fig. 4-25: Configuration
The two speed positioning operation is illustrated in the following graph. Neither the zero point
return nor the JOG instructions are used in the ladder program.
Frequency
(Hz)
Fig. 4-26: Positioning pattern
FX Positioning Control Systems
Drill
M
1PG
40,000
Operation speed 1
20,000
BFM #20, #19
0
Target address 1
BFM #18, #17
0
Learning to Use the FX Family for Positioning Control
High
speed
100 50
Target
address 2
BFM #22, 21
50 100
Wood
Low
speed
Operation speed 2
BFM #24, #23
150 200
433010da.eps
433020da.eps
4 - 39