Siemens Simatic RTU3030C, Руководство по эксплуатации

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Program blocks
5.5 Blocks for basic types of calculation
RTU303xC
Operating Instructions, 06/2019, C79000-G8976-C382-06
259
5.5 Blocks for basic types of calculation
5.5.1 Addition
Function
The block adds the values of up to four analog inputs. The sum is written to the output.
Parameters
Parameters Tag type / range of
values
Description
Input parameters
En
Enable parameter, see section Often used parameters
(Page 252).
Input 1 .. Input 4 Analog input / bit
memory
Event counter / usage
meter
The values of the activated inputs are used for the addi-
tion.
Inputs with the setting "Unused" are not evaluated.
Output parameters
Sum
Analog memory bit
•
Configured as a
floating-point
number:
±3.402823 e-38 ..
±3.402823 e+38
•
Configured as a
counter:
0 .. 4294967295
Tag in which the calculated sum is output.
Error Digital output / bit
memory
Error display:
•
0: Block processing completed without errors
• 1: Block processing aborted with an error
For the meaning, see Often used parameters
(Page 252).
5.5.2 Subtraction
Function
The block subtracts the values of one to three inputs (Input 2 + Input 3 + Input 4) from the
value of the input "Input 1". The difference is written to the output.