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Appendix D
IR Area Allocations
157
Detailed IR Area
Allocation Table
Positioning Completed flag
This bit turns OFF when positioning, ORIGIN SEARCH, or ORIGIN RETURN are started. It
turns ON when positioning is completed for single or bank end actions (including dwell time),
but not when STOP is executed during operation. The Busy flag turns OFF within 1 scan after
this flag turns ON.
Bank Completed flag
This bit turns OFF when positioning, ORIGIN SEARCH, or ORIGIN RETURN are started, and
ON, along with the Positioning Completed flag, when positioning is completed for a bank.
At-origin flag
This bit turns ON when positioning stops at the origin, but not when the origin is passed dur-
ing operation. It turns ON within 1 scan after the Busy flag turns OFF.
Alarm flag
This bit turns ON when an alarm code (1*** or 2***) is generated.
Emergency Stop flag
This bit turns ON when an emergency stop signal is externally input, regardless of whether
the Position Control Unit is operating or not. Pulse output is prohibited during this time. This
bit turns OFF when the emergency stop signal is turned off and RELEASE PROHIBIT (bit 04
of IR n) is turned ON.
Error flag
This bit turns ON when error code (5*** or 9***) has been generated.
Zone 0 flag
Zone 1 flag
Zone 2 flag
These bits turn ON when the present position is within the zone ranges set in DM m+9 and
m+20.
Teaching Completed flag
This bit turns OFF when TEACH is executed and ON when teaching is completed.
Transfer Completed flag
This bit turns OFF when TRANSFER DATA is executed and ON when data transfer is com-
pleted. The Busy flag turns OFF when this flag turns ON.
No-origin flag
This bit turns ON during initial processing and OFF when the origin has been determined. The
following conditions cause this bit to turn ON:
•
When positioning is stopped by an emergency stop or by a CW/CCW limit signal.
•
When an extended completion code is executed.
•
When positioning is stopped due to changing the PC’s mode during pulse output.
(i.e., changing RUN to PROGRAM).
•
When positioning is stopped during operation due to a hardware error.
•
When ORIGIN SEARCH is executed.
The following conditions cause this bit to turn OFF:
•
When the origin signal is input during ORIGIN SEARCH.
•
When RESET ORIGIN is completed.
•
When the present position has been reset.
Busy flag
This bit remains ON during initial data transfer or during calculation. It turns ON whenever
processing is started and OFF when it is completed. It also turns OFF after information has
been set for completion flags (such as for positioning, teaching, and transfer), or after an error
is generated and the error code and Error flag are set. If the positioning time is too short, it
may not be possible to read the status of this flag during the scan of the ladder program.
Function
Word
Bit
n+5
00
01
02
03
04
05
00
07
08
09
10
11
12