Siemens SIWAREX WP321 Manual

Scale parameters and functions
8.11 DR 14 SIMATIC interface parameters
SIWAREX WP321
72 Manual, 07/2014, A5E33715669A-02
8.11.1
Selection of process value 1, 2
The current process values can be read to the SIMATIC CPU with the DR 30 and DR 31
data records and the FB SIWA function block. The transfer of a larger data record is based
on "acyclic services". It may take several SIMATIC CPU cycles and therefore have a
negative effect on system performance.
The I/O interface of the SIWAREX module is the best option if a process value is to be
rapidly transferred to the SIMATIC CPU as soon as it is created in the SIWAREX module.
Data is applied cyclically by FB 41 and provided as a tag in the scales data block.
The relevant code from the table below must be entered to define the tag for output via the
I/O interface.
Table 8- 9 Selection table for process value 1,2
Process value
Decimal code
From DR
Format
No process selected 0 - -
Gross process 1 30 FLOAT
Net process 2 30 FLOAT
Tare process 3 30 FLOAT
Legal trade G/N weight 4 30 FLOAT
G/N weight_x10 5 30 FLOAT
Unfiltered digit value 9 31 LONG
Filtered digit value 10 31 LONG
Refresh counter 12 30 USHORT
Async. error bits (32 bits):
Bits 0..15: operator error
Bits 16..31: technology error
15 32 LONG

Siemens SIWAREX WP321 Specifications

General

Brand	Siemens
Model	SIWAREX WP321
Category	Accessories
Language	English