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Configuration and Use Manual 179
Model 2700 PROFIBUS Block Parameters
Status Bytes Block ParametersDiagnostic BytesProLink
F.4.7 AI function block parameters
Table F-12 shows the parameters for the AI function blocks.
Table F-12 AI function block parameters
Index Parameter Mnemonic Definition Message
Ty pe
Data Type/
Structure
Size Store
/Rate
(HZ)
Default
Value
Access Enumerated List of
Values / Range
Modbus
Register /
Coil
Standard PA parameters
16 BLOCK_OBJECT This object contains the
characteristics of the block
RECORD DS-32 20 S ---- R NA NA
17 ST_REV A block has static block
parameters that are not
changed by the process.
Values are assigned to this
parameter during the
configuration of optimization.
The value of ST_REV
increases by 1 after every
change of a static block
parameter.
SIMPLE Unsigned16 2 N 0 R NA NA
18 TAG_DESC Every block can be assigned a
textual TAG description. The
TAG_DESC must be
unambiguous and unique in the
field bus system.
SIMPLE OCTET
STRING
32 S ‘ ’ R/W NA NA
19 STRATEGY Grouping of function block.
The STRATEGY field can be
used to group blocks.
SIMPLE Unsigned16 2 S 0 R/W NA NA
20 ALERT_KEY This parameter contains the
identification number of the
plant unit.
SIMPLE Unsigned8 1 S 0 R/W NA NA
21 TARGET_MODE This parameter contains
desired mode normally set by a
control application of an
operator. The modes are valid
alternatively only, i.e. only one
mode can be set at one time. A
write access to this parameter
with more than one mode is out
of the range of the parameter
and has to be rejected.
SIMPLE Unsigned8 1 S Auto
(0x08)
R/W 0x08 – Auto
0x10 – Manual
0x80 – Out of Service
R-1506
22 MODE_BLK This parameter contains the
current mode and the permitted
and normal mode of the block.
RECORD DS-37 3 D ---- RNA R-1507
23 ALARM_SUM This parameter contains the
current states of the block
alarms.
RECORD DS-42 8 D 0,0,0,0 R NA NA
24 BATCH This parameter is intended to
be used in Batch applications
in line with IEC 61512
Part1. Only Function Blocks
carry this parameter. There is
no algorithm necessary
Within a Function Block.
RECORD DS-67 10 S 0,0,0,0 RW NA NA
25 RESERVED
AI Function Block Standard Parameters
26 OUT
(DD Name: AI Out)
The Function Block parameter
OUT contains the current
measurement value in a
vendor specific or configuration
adjusted engineering unit and
the belonging state
in AUTO MODE. The Function
Block parameter OUT contains
the value and status
set by an operator in MAN
MODE.
RECORD 101 5 D ---- R/W (
Can be
written
only in
Manual
Mode)
NA NA
27 PV_SCALE
(DD Name: AI PV Scale)
Conversion of the Process
Variable into percent using the
high and low scale
values.
ARRAY FLOAT 8 S 100.00 R/W NA NA
28 OUT_SCALE
(DD Name: AI Out Scale)
Scale of the Process Variable. RECORD DS-36 11 S 100.00 R/W NA R-1509
(Only units)
29 LIN_TYPE
(DD Name: AI Linearization
Ty pe )
Type linearizationion. SIMPLE Unsigned8 1 S 1 R/W NA R-1510
30 CHANNEL
(DD Name: AI Channel)
Reference to the active
Transducer Block which
provides the measurement
value
to the Function Block.
SIMPLE Unsigned16 2 S --- R/W NA R-1508
31 RESERVED
32 PV_FTIME
(DD Name: AI PV Filter Time)
Filter time of the Process
Variable.
SIMPLE FLOAT 4 S 0 R/W NA NA
33 RESERVED
34 RESERVED