Input Lock - Siemens SIMATIC ET 200SP Manual

6.6

Input lock

"Input lock" freezes the measuring value. "Input Lock" can be helpful, for example, in case of
known interferences to prevent feeding these interferences into the filters of the analog input
module.
There are various "Input lock" options.
QByte
x
Input lock A
Once input lock A is activated, no new measured values are fed into the filters of the analog
input module. The measured value in the process image input is frozen. Only by stopping input
lock A is the measured value refreshed again or the module-internal filters supplied with new
values.
Input lock B
Once input lock B is activated, the measured value in the process image input is frozen. After
stopping input lock B, the measured value is prefiltered and refreshed again. This prefiltering
is done with a configurable average value filter (see prefilter Input lock B).
Note
Switching between Input lock A and Input lock B
It is not possible to switch directly between Input lock A and Input lock B.
● To change to a different input lock you must stop the currently active input lock.
Analog input module AI 2xSG 4-/6-wire HS (7MH4134-6LB00-0DA0)
Manual, 09/2018, A5E41867508A-AB
Bit Stop Input lock
0 0
1 0
2 0
3 0
4 0
5 0
6 0
Parameters/address space
Start Input lock A
1
0
0
0
0
0
0
6.6 Input lock
Start Input lock B
0
1
0
0
0
0
0
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