IAI America SCON-C - Manual (Page 90)

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1.3.2 Details of Each Output Signal
 Completed position number (PM1 to PM256)
These signals can be used to check the completed position number when the PEND signal turns ON.
The signals are output as a binary code.
Immediately after the power is input, all of the PM1 to PM256 signals are OFF.
In the standard or teaching type, six bits of PM1 through PM32 are used. In the 256-point type, eight bits of PM1
through PM128 are used. In the 512-point type, nine bits of PM1 through PM256 are used.
All of these signals are OFF also when the actuator is moving.
As described above, this signal is output only when positioning is completed.
(Note) All of these signals will turn OFF when the servo is turned OFF or an emergency stop is actuated. They
will return to the ON status when the servo is turned ON again, provided that the current position is
inside the positioning band with respect to the target position. If the current position is outside the band
the signals will remain OFF.
When the power is input, the PEND signal will turn ON. These signals are all OFF, this condition is the
same as one achieved after positioning to position “0” is completed.
Check the position of position “0” after the movement command has completed.
If an alarm is present, the corresponding alarm code (abbreviated form) consisting of four bits from PM1 to PM8
will be output.
The meanings of these signals vary between the normal condition and the alarm condition, so be careful not to
use them wrongly in the sequence.
 Moving (MOVE)
This signal is output while the servo is ON and the actuator is moving (also during home return, push & hold
operation or jogging).
Use the MOVE signal together with the PEND signal to allow the PLC to determine the actuator status.
The MOVE signal will turn OFF after positioning or home return is completed or a judgment is made during push
& hold operation that the load is being contacted.
 Zone (ZONE1)
This signal will remain ON while the current actuator position is inside the zone specified by parameters No. 1,
“Zone 1+ [ZONM]” and No. 2, “Zone 1- [ZONL],” or OFF while the actuator is outside the above zone. This signal
is always effective once home return has been completed and is not affected by the servo status or presence of
an alarm.
(Note 1) This signal becomes effective only after the coordinate system has been established following a
completion of home return. It will not be output immediately after the power is turned on.
As long as home return has been completed, this signal is enabled even when the servo is off or while
an emergency stop is actuated.
(Note 2) The zone functions have been changed due to version upgrade. Refer to the precautions at the outset.
 Position zone signal (PZONE)
This signal will turn ON when the current actuator position enters the area between the zone boundaries set in
the position table. After the current position movement command is completed, the signal will remain effective
until the next position movement command is received.
(Note) The zone functions have been changed due to version upgrade. Refer to the precautions at the outset.