Panasonic FPG Series Technical Manual page 96

P Point Control: Multi - Stage Acceleration / Deceleration
If the P point control program is booted
while the E point control program has been
booted and is running, the flag X10A changes,
resulting in affecting the P point control
program operation.
7-14
FP∑ Positioning Unit
Because an interlock is in effect, the E
point control program cannot be booted if
the P point control program has already
been booted. This prevents E point con-
trol from affecting P point control.