IAI America ACON-CG - Manual (Page 95)

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6. Data Entry <Basics>
Also note that 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 signals ON via a parameter in situations where the PLC sequence circuit is designed
in such a way that problems will occur if complete signals turn OFF.
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 will be disabled if the actuator
has completed the push & hold action successfully. The automatic servo-off mode will
be enabled if the actuator has missed the work part.
Basically, the customer is advised not to use the automatic servo-off mode for push &
hold operation.