Siemens ULTRAMAT 6 Manual page 109

4.2.4 Adapting to the Desired Process Variable
The 'Analog Input' function block has the job of projecting the measured value onto the process
value. As a rule you want to switch the measured value directly to the bus. In this case the input and
output ranges are taken over from the working range. The measured concentration can be adapted to
the process variable here. Transfer the start of scale and full scale values of the input range to the
start of scale and full scale values of the corresponding output range as described in the following
examples:
Note: In the Analog Input function block there is no access to the instrument via
PROFIBUS-PA. The input can only be evaluated here by using SIMATIC PDM.
Example:
You want to assign the input range 0 to 1000 mg/m
follows:
Set the following parameters:
• In the 'Measuring variable 1' block: CO as a measuring component
as well as as a unit of the primary variable: mg/m
• In the 'Analog Input 1' function block:
as an input start of scale value: 0
as an input full scale value: 1000
as a unit (output): % as an output start of scale value:
as an output full scale value 100.0
4.2.5 Electrical Damping
The electrical damping acts as a 1
63 % of the input value.
Set the desired time (between 0 and 100 s) as a filter time constant parameter in the Analog Input
function block.
ULTRAMAT 6 / OXYMAT 6 / CALOMAT 6 / ULTRAMAT 23 / OXYMAT 61
Schnittstelle PROFIBUS DP / PA Interface
A5E00054148-03
3
CO to the output range 0 to 100 %. Proceed as
3
st
order filter. After the preset filter time constant T
0.0
the output has
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