Specifications

Analog Input Modules
186
31007715 6/2008
Determining
Offset and
Maximum
Count Values
To apply offset and maximum count to an analog channel:
Averaging You may apply a filter that will smooth the values of the analog inputs reported by
the STB ACI 1400. The Advantys configuration software allows you to average over
a specified number of samples. By default, the number samples averaged is one (no
averaging); you may have a filtering average over up to 80 samples. To configure
an averaging value:
Step Action Result
1 Connect the Advantys configuration
software to a physical island.
The software will be in online mode.
2 Double-click on the STB ACI 1400
module in the island editor.
The module editor for the selected
STB ACI 1400 module will open.
3 Open the I/O Image Data Animation
sheet, which can be accessed from the
module editor in the Advantys
configuration software when it is online.
4 Apply a value corresponding to the
minimum input (0 mA or 4 mA
depending on the selected range), and
read the analog input channel’s data in
the I/O Image Data Animation sheet.
Ideally, the channel data should read 0. If
this is true, then no offset adjustment is
necessary. If the data value is not 0, make
a note of the actual data value.
5 Apply a value corresponding to
maximum input (20 mA) and read the
analog input channel’s data in the
module’s I/O Image Data Animation
sheet.
Ideally, the channel data should read
32 000. If this is true, then no maximum
count adjustment is necessary. If the data
value is not 32 000, make a note of the
actual data value.
6 If adjustments need to be made, take the
Advantys configuration software offline.
7 Double-click on the STB ACI 1400
module in the island editor.
The module editor for the selected
STB ACI 1400 module will open.
8 Open the Properties sheet in the
module editor. In the Offset value field,
enter the data value that you read in step
4. In the Max. Count value field, enter the
data value that you read in step 5.
9 Save the new configuration parameters. When the configuration is downloaded to
the physical island, the new offset and
maximum count parameters will be applied
to the analog input channel.
Step Action Result
1 Double click the STB ACI 1400 module
you want to configure in the island editor.
The selected STB ACI 1400 module
opens in the software module editor.
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