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9-4
Section
Forced Interrupt
212
9-4
Forced Interrupt
FORCED INTERRUPT is a command which is only enabled during memory
operation. It is used for taking emergency evasive action from the current opera-
tion under memory operation.
When a sequence number with the forced interrupt operation set is specified and
the FORCED INTERRUPT Bit is turned ON, the pulse output of the memory
operation currently being executed is stopped (without deceleration) and posi-
tioning is executed from the specified sequence number. There is no need to
turn ON the Sequence Number Enable Bit.
The forced interrupt operation will depend on the startup method at the time of
the interrupt. For operation started with INDEPENDENT START, operation will
follow terminating completion. For any other kind of startup method, operation
will be determined by the completion code in the positioning sequence.
Note
A sequence number error (error code 8101) will be generated in the following
cases.
•
If forced interrupt is executed at power up or restart, or after execution of origin
search, origin return, or present position preset.
•
If forced interrupt is executed at bank end.
Procedure for Using Forced Interrupt
1, 2, 3...
1. Set the forced interrupt action in the positioning sequence and transfer it to
the PCU.
2. When a forced interrupt is required, specify the sequence number set in (1)
and FORCED INTERRUPT from OFF to ON.
9-4-1 Beginning Words of Operating Memory Area, Operating Data Area,
and Parameter Areas
The beginning words of the operating memory area, operating data area, and
common parameter area used for a Position Control Unit (PCU) are determined
(or set) according to the following.
•
Beginning word of the operating memory area, n = CIO 2000 + 10
×
unit num-
ber
•
Beginning word of the common parameter area, m = 100
×
unit num-
ber
•
Beginning word of the operating data area, l, is specified in m and m+1.
Set the beginning words of the operating data area and designate the axis
parameters used with the common parameters as shown below.
Word
Name
Bit
Reference
m
Operating data
area designation
00 to 15
Section 4
m+1
Beginning word of
operating data
area
00 to 15
m+2
Axis parameter
designation
00 to 15
9-4-2 Operating Memory Area Allocation and Operating Data Area
Settings
Refer to
8-4 Positioning Sequence
for information about positioning sequences
under memory operation.
Outline of Operation
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