IAI America PCON-CF - Manual (Page 81)

63
5. I/O Signal Control and Signal Functions
„ Home return completion (HEND)
This signal is OFF immediately after the power is input, and turns ON in either of the following two conditions:
[1] Home return operation has completed with respect to the first movement command issued with the start
signal.
[2] Home return operation has completed following an input of the home return signal.
Once turned ON, the HEND signal will not turn OFF unless the input power supply is cut off, a soft reset is
executed, or the home return signal is input again.
The HEND signal can be used for the following purposes:
[1] Check prior to establishing the home if movement toward the home direction is permitted, in cases where
an obstacle is located in the direction of the home
[2] Use as a condition for writing the current position in the teaching mode
[3] Use as a condition for enabling the zone output signal
„ Zone (ZONE1, ZONE2)
[1] ZONE1
This signal will remain ON while the current actuator position is inside the zone specified by Parameter No. 1,
“Zone boundary+” and Parameter No. 2, “Zone boundary-,” or OFF while the actuator is outside this range. 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) 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.
[2] 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.
„ Current operation mode (MODES)
This signal is enabled when the teaching type is selected.
The MODES signal will turn ON when the teaching mode is enabled upon selection of the teaching mode via the
operation mode input signal (MODE signal ON).
Thereafter, the MODES signal will remain ON until the MODE signal turns OFF.
Configure the system in such a way that the PLC will start teaching operation after confirming that the MODES
signal has turned ON.
„ Write completion (WEND)
This signal is enabled only when the teaching type is selected.
The WEND signal is OFF immediately after the controller has switched to the teaching mode. It will turn ON
when the writing of position data in response to the current-position write signal is completed.
When the current-position write signal turns OFF, this signal will also turn OFF.
Configure the system in such a way that the PLC will acknowledge completion of writing when the WEND signal
turns OFF.