Shut-Off Correction Weight; Dr 24 Controller And Filter Parameters; Overview - Siemens SIWAREX WP251 Manual

When the coarse signal is shut off, this may produce an overshoot that can be higher than
the fine shut-off point, which would cause the fine signal to be shut off too early. To prevent
this premature shut-off, the "Blocking time fine signal" can be defined in milliseconds (ms).
8.22.7

Shut-off correction weight

This parameter enables influences that occur during dosing (e.g. overpressure or
underpressure) to be taken into account in determining when the set point weight is reached.
The setting conforms to the "Parameter relation" setting and can thus be an absolute weight
or a percentage of the set point. The shut-off correction weight currently in effect is always
output in data record 31 in the weight unit.
8.23

DR 24 Controller and filter parameters

8.23.1

Overview

The parameters of the proportional controller and other filter parameters are defined in this
data record.
Table 8- 23 Assignment of data record 24
Variable Note
Data record Contains no. of the data record
number
Length Data record length information
Application Information on application to which
DR belongs
Version identifier Current data record version infor-
mation
Parameter rela- 0: Maximum corrective action and
tion (Page 123) controller deadband in % of set
point in DS 20
1: Specification as absolute values
Type of control- 0: No controller
ler (Page 123) 1: Proportional controller
Control factor of Control factor of proportional con-
proportional troller
controller
(Page 123) (%)
for proportional
controller
Reserve Reserve
SIWAREX WP251
Manual, 12/2015, A5E37203357A
8.23 DR 24 Controller and filter parameters
Type Length RW
(bytes)
USHORT 2 r
USHORT 2 r
USHORT 2 r
USHORT 2 r
USHORT 2 rw
USHORT 2 rw
FLOAT 4 rw
FLOAT 4 rw
Scale parameters and functions
De- Min. Max. Modbus
fault registers
24 - - 1694
56 - - 1695
105 - - 1696
1 1 65535 1697
0 0 0 1698
1 0 0 1699
30 > 0 0 1700
0 0 0 1702
121