Automatic Emptying; Emptying Time; Maximum Emptying Time - Siemens SIWAREX WP251 Manual

● The "Activate check stop (1122)" command notifies WP251 to stop again at the next
check stop point.
→ The "Check stop follows" bit is set again in the AWI Status.
● The "Continue weighing (1141)" command continues the dosing cycle.
→ After weighing step 2 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.
● Because no other check stop points were defined, the dosing cycle is performed after
"Continue weighing (1141)" to the end.
8.24.12

Automatic emptying

This parameter defines whether and in which form the scale is to be emptied by WP251 at
the end of an automatic weighing cycle. The following options are available:
Function
code
0 (default)
1
2
8.24.13

Emptying time

The parameter defines a fixed time during which the emptying signal is activated in the
emptying step. It applies only when function code 2 (Emptying according to specified time) is
selected as the emptying option in DR 25. The setting is made in milliseconds (ms).
8.24.14

Maximum emptying time

This parameter defines a monitoring time for emptying option 1 in DR 25 (Emptying until limit
3 is fallen below). The time starts together with the emptying signal. If limit 3 has not yet
been fallen below after expiration of the time, a corresponding technology message is issued
that has no further effect on the weighing cycle or emptying. The message is purely
informative. The parameter setting is made in milliseconds (ms).
SIWAREX WP251
Manual, 12/2015, A5E37203357A
Meaning
No emptying. After a tolerance check (if cycle is checked), WP251 completes the
dosing cycle and jumps to weighing step 0.
Empty until limit 3 is fallen below. WP251 sets the "Emptying" bit (which can be
placed directly on one of the digital outputs) until the gross weight falls below limit 3
(defined in DR 6) and then resets the bit.
Empty according to specified time. WP251 sets the "Emptying" bit (which can be
placed directly on one of the digital outputs) based on the emptying time specified in
DR 25 and then resets the bit automatically – regardless of whether or not the scale
was completely emptied during the time!
Scale parameters and functions
8.24 DR 25 Dosing device parameters
131