Depth Average Filter; Adopt Corrected Fine/Trailing Value To Dr 23 Automatically; Dr 25 Dosing Device Parameters; Overview - Siemens SIWAREX WP251 Manual

Scale parameters and functions

8.24 DR 25 Dosing device parameters

8.23.12

Depth average filter

Depth average filter 2 is used to damp the weight value against periodic disturbances. The
weight value is calculated from the average of the n (n = max. 250) most recent weight
values calculated by the weighing module every 10 ms. When n = 10, for example, 10 values
are used to calculate the average. Every 10 ms, the oldest value is omitted from the
calculation and the newest value is included in the calculation (running average).
8.23.13

Adopt corrected fine/trailing value to DR 23 automatically

At the initial start of a dosing with "Material A", WP251 calculates the shut-off points for the
coarse/fine signal according to settings from DR 23 (fine/trailing weight).
If the P-controller is active, the fine/trailing weight of "Material A" internally (DR 31) is
corrected or optimized by the controller during operation if necessary.
If there is now a change to "Material B" that entails different parameters, the corrected
fine/trailing weight of "Material" would have to be read from DR 31 and copied to DR 23
before the change so that at the next loading of "Material A" the optimized values are used
directly at the start.
To automate this copying, the "Adopt corrected fine/trailing value to DR 23 automatically"
parameter can be set to "YES" or "1".
8.24 DR 25 Dosing device parameters
8.24.1

Overview

This data record provides parameters that relate to the scale (dosing system) and are
independent of the material.
Table 8- 24 Assignment of data record 25
Variable Note
Data record number Contains no. of the data record USHORT
Length Data record length information
Application Information on application to
which DR belongs
Version identifier Current data record version
information
Maximum single set Specification in weight unit
point (Page 128)
"Coarse" set value % value referenced to 0/4-20
for analogue output mA
(Page 128)
126
Type Length RW
(bytes)
2 r
USHORT 2 r
USHORT 2 r
USHORT 2 r
FLOAT 4 rw
FLOAT 4 rw
De- Min. Max.
fault
25 - -
92 - -
105 - -
1 1 65535
100 0 0
80 > Fine 100
signal
value
SIWAREX WP251
Manual, 12/2015, A5E37203357A
Modbus
registers
1722
1723
1724
1725
1726
1728