Weighing Start Options; Cycle Time For Automatic Zero Setting; Number Of Weighings Without Automatic Taring/Zero Setting; Check Stop - Siemens SIWAREX WP251 Manual

Scale parameters and functions
8.24 DR 25 Dosing device parameters
8.24.8

Weighing start options

This parameter defines the first action of an automatic dosing cycle to be executed (weighing
step 1). The following options are available:
Function
code
0
1
2 (default)
3
4
8.24.9

Cycle time for automatic zero setting

This parameter can be used to define a time after which zero setting or taring must have
occurred. The setting is made in milliseconds (ms). When "OIML" is set in DR 3, a zero
setting/taring occurs at the latest as defined in the regulations. Dependent on the maximum
time setting
8.24.10

Number of weighings without automatic taring/zero setting

This parameter defines a number of dosing cycles that are not zeroed or tared. It applies
only during continuous operation. The first cycle of the continuous operation is always
zeroed or tared (if configured for "Dosing start").
8.24.11

Check stop

This parameter enables, in contrast to transitions, the dosing cycle to be stopped after each
individual weighing step. By setting bits 0 ... 7, corresponding check stops are set for
weighing steps 0 ... 7. In addition, the "Activate check stop (1122)" command must be
issued in order to stop the cycle at the first set check stop point.
Example:
● The check stop bits are set for weighing steps 1 and 2 and DR 25 is transmitted to
WP251.
The "Activate check stop (1122)" command is issued.
→ The "Check stop follows" bit is set in the AWI Status.
● Dosing is started (single dosing or continuous operation)
→ After weighing step 1 is complete, WP251 jumps to "Stopped" state. The "Check stop
active" bit is set in the AWI Status, and the "Check stop follows" bit is reset.
130
Meaning
The dosing starts directly without zero setting or taring
WP251 sets the scale to zero and then starts the dosing operation
WP251 tares the scale and then starts the dosing operation
WP251 tares the scale using the preset tare weight from DR 15 and then starts the
dosing operation
WP251 tares the scale using the preset tare weight from the SIMATIC I/O and then
starts the dosing operation
SIWAREX WP251
Manual, 12/2015, A5E37203357A