Specifications

Analog Input Modules
122
31007715 6/2008
Determining
Offset and
Maximum
Count Values
To apply offset and maximum count to an analog channel:
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 appropriate
STB ACI 1230 module in the island
editor.
The module editor for the selected
STB ACI 1230 module will open.
3 Open the I/O Data Animation sheet,
which can be accessed from the
module editor in the Advantys
configuration software when it is online.
4 Apply 0 mA to the appropriate field
sensor and read the analog input
channel’s data in the I/O 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 it.
5 Now apply 20 mA to the field sensor
and read the analog input channel’s
data in the module’s I/O 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 it.
6 If adjustments need to be made, take
the Advantys configuration software
offline.
7 Double-click on the appropriate
STB ACI 1230 module in the island
editor.
The module editor for the selected
STB ACI 1230 module will open.
8 Open the Properties sheet in the
module editor. In the Offset value field,
enter the data value that you read when
0 mA was applied. In the Max. Count
value field, enter the data value that
you read when 20 mA was applied.
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.
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