IAI America SCON-C - Manual (Page 113)

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When the PIO pattern is 0, 1, 2, 3 or 4, the servo will turn off and therefore the position complete signal (PEND),
completed position number signals (PM1 to PM256) and movement complete signals at respective positions
(PE0 to PE6) will turn OFF.
However, you can keep the complete signals ON using a parameter in situations where the PLC sequence
circuit is designed in such a way that problems will occur if the complete signals turn OFF. (Position complete
INP)
Setting of parameter No. 39
(Output mode of position
complete signal)
[1] PIO pattern = 0 to 3
Position complete (PEND) signal status, completed position number (PM1
to PM256) signal status
[2] PIO pattern = 4
Position complete (PEND) signal status, movement complete (PE0 to PE6)
signal status
0 [PEND] The signal will turn OFF unconditionally when the servo turns off.
Even when the next movement command is issued and the servo turns on
again, the actuator has already started moving to the next target position, so
the signal still remains OFF.
1 [INP] Even when the servo is off, the signal turns ON if the current position is within
the range set by the “Positioning band” field of the position table, with respect
to the target position, and turns OFF if the current position is outside this range.
(Note) The factory setting is “0 [PEND].”
Warning: If the next movement command is specified in the incremental mode (based on constant pitch
feed), never use the automatic servo-off mode. The current position may deviate slightly as the
servo turns off and then on again.
Caution: In push & hold operation, the automatic servo-off mode is disabled if push & hold operation has
completed successfully. This mode is enabled if the actuator has missed the load. As a basic rule
of thumb, do not use the automatic servo-off mode in push & hold operation.