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4. OPERATION
(i) Position latch (LPOS)
POINT
When Current position latch input (LPS) is used to store the current
position, the value differs depending on the servo motor speed provided
when LPS has turned ON.
The current position where Current position latch input (LPS) is turned ON is stored. The stored
position data can be read by the communication function. (Refer to Section 15.12.12)
The current position latch function set in a program is canceled at the end of that program. It is
also canceled when the operation mode is changed, a forced stop is made, an alarm occurs, or the
servo switches off. It is not canceled when a temporary stop is merely made.
Program Description
SPN (500)
STA (200)
STB (300)
MOV (1000)
LPOS
STOP
Speed (Motor speed) 500 [r/min]
Acceleration time constant 200 [ms]
Deceleration time constant 300 [ms]
Absolute move command 1000 [
10
STM
m]
Current position latch is set. a)
Program end
0r/min
ON
OFF
1000
Servo motor
speed
Forward
rotation
Current position
latch input (LPS)
Current position 300 [ 10
STM
m]
is stored.
Latched when LPS
is turned ON edge by
LPOS. (a))