Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 292)

5.9 Table Manipulation Instructions
5.9.9 Clear Queue Table Pointers (QTBLCL)
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Instructions
5
5.9.9 Clear Queue Table Pointers (QTBLCL)
( 1 ) Operation
The QTBLCL instruction returns the queue read and queue write pointers to their initial values (first row) for the table
data that is specified by the table name.
If the instruction ends normally, the output data is set to 0 and the status is turned OFF. If an error occurs, an error code
is set in the output data and the status is turned ON.
[ a ] If the Queue Clear Succeeds
[ b ] If the Queue Clear Fails
ΠIf the clear fails, the queues will retain the contents from before the instruction was executed.
Table Data
Read pointer
Write pointer
Pointers return
to first row.
0 Output data
Status 0 (OFF)
Error code Output data
Status 1 (ON)