Siemens SIMATIC TIM 3V-IE DNP3 - Page 210

The SINAUT Configuration Tool
6.6 TD7onTIM
TIM DNP3
210 System Manual, 12/2015, C79000-G8976-C253-04
Analog value processing is handled in the following order:
1. Reading the data from the input area of the CPU
2. Analog preprocessing in the following steps:
– Unipolar analog value
– Fault suppression time
– Smoothing factor
3. Threshold value calculation for the trigger condition "Send at change of"
4. Storage of the value in the send buffer
Transfer of the value to the partner if trigger and threshold value conditions are met.
Processing parameters
The following parameters are available in the "Processing parameters" box:
Name:
Unipolar analog value
Range of va
l-
ues:
Function active, function deactivated
Default:
Function active
Explanation:
If the function is
activated, negative analog values are corrected to the value
zero.
The error ID 8000
H
(-32768), that is displayed, for example, if there is a wire
break in life zero inputs, is nevertheless transmitted.
Name:
Smoothing factor
Range of va
l-
ues:
1 = none,
4 = weak, 32 = medium, 64 = strong
Default:
1
Explanation:
Using the smoothing factor, quickly fluctuating analog values can be
smoothed to a greater or lesser extent depending on the parameter setting.
It may then be possible to set a lower value for t
he send trigger "Send at
change of".
The smoothing factors are identical to the smoothing factors that are confi
g-
ured for some S7 analog input modules. The smoothing in the channel fun
c-
tions according to the same formula as on an input module:
where
y
n
= smoothed value in the current cycle n
y
n
= acquired value in the current cycle n
k = smoothing factor