Siemens MICROMASTER 440 Operating Instructions Manual page 52

3 Functions
Monitoring parameters
These can only be read – "r" parameters
These parameters are used to display internal quantities, for example states and
actual values. These parameters are absolutely necessary, especially for
diagnostics.
Notation:
r0002
r0052.3
r0947[2]
r0964[0...4]
Abbreviated notation
r0964[5]
NOTE
A parameter (e.g. P0013[20]) with x consecutive
elements (in this case: 20) is defined using an index. x is
defined by the numerical index value. When transferred to
a parameter this means that an indexed parameter can
assume several values. The values are addressed via the
parameter number including the index value (e.g.
P0013[0], P0013[1], P0013[2], P0013[3], P0013[4], ...).
Index parameters, for example, are used for:
Drive data sets
Command data sets
Sub-functions
In addition to the parameter number and parameter text, every setting and
monitoring parameter has different attributes which are used to individually define
the properties/characteristics of the parameter. The attributes are listed in the
following Table which are used for MICROMASTER.
Table 3-1 Parameter attributes
Attribute Attribute
group
Data types
U16
U32
Float
52
monitoring parameter 2
monitoring parameter 52, bit 03
monitoring parameter 947 index 2
monitoring parameter 964 with 5 indices (indices 0 to 4)
monitoring parameter 964 with 5 indices (indices 0 to 4)
The data type of a parameter defines the maximum possible value range. 3 data
types are used for MICROMASTER. They either represent an unsigned integer value
(U16, U32) or a floating-point value (float). The value range is frequently restricted by
a minimum, maximum value (min, max) or using drive inverter/motor quantities.
Unsigned, integer value with a size of 16 bits,
max. value range: 0 .... 65535
Unsigned, integer value with a size of 32 bits
max. value range: 0 .... 4294967295
A simple precise floating point value according to the IEEE standard format
+38
max. value range: -3.39e
Description
+38
– +3.39e
MICROMASTER 440
Issue 10/06
P0013[0]
P0013[1]
P0013[2]
. .
.
P0013[18]
P0013[19]
Operating Instructions
6SE6400-5AW00-0BP0