Curve Representation - Deprag AST11-1 Operating Instruction Booklet

12.2 Curve Representation

A screwdriving curve is created for every screwdriving process with the AST sequence
controller. This can be viewed or saved in different ways.
• Displayed directly on the control unit in the Process Data menu area  Graphic
• Download via the web-based user interface in the Process Data menu area 
Graphic in following formats:
◦ As binary file: The file contains the recorded raw data. The GRAPH10 viewer
program is required for viewing or processing.
◦ As CSV file: The data is converted into a table separated by commas, meaning
the values are represented as text, with commas between the columns and line
feed characters between the datasets. This format can be read or edited by
spreadsheet programs such as Microsoft Excel or OpenOffice.org / LibreOf-
fice.org Calc. It is also possible to analyze with scripts or own programs. There
are two limitations for table processing:
1. Older versions of Microsoft Excel (up to and including Excel 2003) and
OpenOffice.org Calc (Versions older than 3.3) cannot process more than
65536 rows; the curve data however frequently contain more data sets.
Microsoft Excel Version 2007 and newer as well as OpenOf-
fice.org/LibreOffice.org Calc Version 3.3 and newer can contain 1,048,576
rows.
2. Both table processes interpret the decimal number depending on lan-
guage: German version expects a decimal comma, foreign languages a
decimal point, the other format is wrongly represented. The curve data for
the sequence controller always uses a decimal point because this is the
usual format for computer data. For the analysis with the German version
of the table processing the commas should therefore be replaced by semi-
colons and the decimal point by commas.
◦ As shortened CSV file: The amount of datasets is shortened under the process
limit of the table processing (65536 lines). For this, several datasets are com-
bined by using the highest value respectively. If the file is shortened to half the
volume, the maximum rotating speed, the maximum torque, etc. will be assem-
bled into one data set from every two data sets.
• In connection with the GRAPH10 (E) curve viewer as a direct download from the con-
troller
The following data is recorded:
• Rotation speed
• Torque
• Angle
• Program step
• Current strength
• Temperature of the electronics
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