WTC MedWeld 3005, Operator'S Manual

Page: 103 / 206

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This function can be used to save memory space in the
control, by allowing multiple schedules to execute
commonly-used functions.
The control considers the schedule originally initiated as the
last schedule. The stepper assigned to the original schedule is
also the only one incremented. This function should appear
as the last function in a schedule, because the control will not
return to the original schedule when it completes the new
schedule.
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The following functions permit collecting weld data for use in
SPC (Statistical Process Control) Indexing. Refer to “SPC
Indexing Capabilities” on page 5-9 for a detailed description of
the control’s SPC capabilities.
87 SET SPC OFFSET TO nn
This function establishes the starting bin number for SPC
indexing. Bin #99 is the last usable bin. If the control reaches
bin #99 and is still collecting data, data from each weld will
be stored in bin #99 until a new offset is assigned. As a result,
data accumulated in this bin is unsuitable for analysis.
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This function does NOT tell the control to collect weld data. It only
assigns a data storage bin number. Refer to the Data Collection Sample
Size and Data Collection Sample Frequency setup parameters on
page 5-10 for instructions on how to specify data collection.
88 SEND ALL SAMPLES UNTIL NEXT SPC OFFSET
This function tells the control to start collecting weld data for
all welds. This function should follow the SPC OFFSET
function in the weld schedule because it is still necessary to
assign a starting bin number.
Weld data collection continues until the control executes
another schedule containing the SPC OFFSET function
(without this function), to reset the global data collection
process.
This function overrides the global Data Collection Sample Size
and Data Collection Sample Frequency setup parameters