Mitsubishi Electric MELSEC-L02SCPU User Manual page 129

(g) Axis 1 axis operation status (SD1844) and target position change
If the Axis 1 axis operation status (SD1844) is indicating a stopped status (1) or indicating a standby status (0),
the target position is not changed.
(h) Instruction calculation and positioning completion
If positioning based on positioning data completes while the calculation relating to the Target position change
instruction (IPTPCHG1(P)) is still in progress, the target position is not changed. A "Target position change not
possible" warning (Axis 1 warning code: 1021) occurs.
(i) Acceleration and deceleration
Target position change does not involve acceleration or deceleration change. (The slope in the VT diagram
does not change.)
(j) Target position change value during position control of speed/position switching
control
For the target position change value during position control of speed/position switching control, do not set a
negative value.
If a negative value is set, a "Movement amount setting out of range under speed/position switching control"
error (Axis 1 error code: 1504) occurs.
(The target position change is ignored and position control continues.)
CHAPTER 7 POSITIONING FUNCTION
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