S5-115U Manual
Analog Value Processing
10
Analog Value Processing
Analog input modules convert analog process signals to digital values that the CPU can process.
Analog output modules perform the opposite function.
10.1
Principle of Operation of Analog Input Modules
The analog measured value is digitized and stored in a data register on the module. It can then be
read and processed further by the CPU.
Signal Interchange Between Module and CPU
The CPU reads the digitized value from the module's memory via FB250 or a Load operation
(L PW).
The complete measured value (2 bytes) is stored in CPU RAM.
The 460, 465 and 466 Analog Input Modules
Three different types of analog input modules are available:
6ES5 460-7LA12/7LA13
-
Galvanically isolated
-
8 channels
-
2 range cards
-
Maximum permissible isolating voltage 60 V AC/75 V DC between a channel and ground as
well as between channels.
6ES5 465-7LA12
-
Non isolated
-
8/16 channels (selectable)
-
2/4 range cards
-
1 V max. permissible voltage between a channel and ground as well as between channels
6ES5 466-3LA11
-
Floating
-
8/16 channels (switchable)
-
Short coding times: 2 ms (8 channels) or 4 ms (16 channels)
-
12 different measuring ranges can be set using switches on the module
-
Choice between common-reference measurement (16 channels) or differential measurement
(8 channels)
-
All operating modes can be set using switches on the module
-
Maximum permissible isolation voltage V
ISO
: 60 V AC/75 V DC; between the channels and
ground (M) in each case; however, not between the channels themselves!
EWA 4NEB 811 6130-02b
10-1
Содержание SIMATIC S5-115U
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