Dr 22 Tolerance Parameters; Overview - Siemens SIWAREX WP251 Manual

8.21

DR 22 Tolerance parameters

8.21.1

Overview

The tolerance limits that are to be used in a tolerance check by WP251 are defined in the
data record. Two tolerance bands are defined around the set point. The result of the
tolerance check is available in AWI Status.
The tolerance limits around the set point are as follows:
● TH 2
● TH 1
● SINGLE SET POINT (DS 20)
● TL 1
● TL 2
For example, if TH2 & TL2 are defined with 2 kg and TH1 & TL2 with 1 kg, a dosing will be
rated as "Good" (AWI Status) if the weight was dosed with an accuracy of +/- 1 kg around
the specified set point. If the final weight differs more than +/- 2 kg from the specified set
point, the tolerance check returns "Bad" (AWI Status).
The reaction of the scale to a tolerance error is also defined in DR 22.
Table 8- 21
Variable
Data record
number
Length
Application
Version identifi-
er
SIWAREX WP251
Manual, 12/2015, A5E37203357A
Assignment of data record 22
Note
Contains no. of the
data record
Data record length
information
Information on appli-
cation to which DR
belongs
Current data record
version information
8.21 DR 22 Tolerance parameters
Data type Length RW De-
(bytes)
USHORT 2 r
USHORT 2 r
USHORT 2 r
USHORT 2 r
Scale parameters and functions
Min Max
fault
22 - -
56 - -
105 - -
1 1 65535 1647
Modbus
registers
1644
1645
1646
111