Processing Weighing Step 0 - Wait - Siemens SIWAREX FTA Device Manual

5.5.1

Processing weighing step 0 - Wait

The scale is waiting in weighing step 0. If step 0 is blocked, no start instruction is
accepted. After enabling step 0, the scale waits for the start instruction. When the
start instruction is received, a check is performed to determine whether the
instruction can be executed or not. If YES, it switches to step 1. If step 1 is blocked,
SIWAREX FTA waits for the enable at the beginning of step 1.
5.5.2 Description of Weighing step 1 – Taring/Zero setting
If step 1 is blocked, then no activities in step 1 are performed. After enabling step
1, the scale waits for standstill 2 (only if taring or zero setting is defined). When the
standstill is achieved, the taring or the zero setting is performed. If no check stop
has been activated, the SIWAREX FTA switches to step 2.
5.5.3 Description of Weighing step 2 – Coarse/Fine
If step 2 is blocked, then no activities in step 2 are performed. After enabling step
2, the coarse and fine weighing procedures are performed When the fine signal is
switched off, a check performed to determine whether a check stop requirement is
active. If no check stop has been activated, the SIWAREX FTA switches to step 3.
5.5.4 Description of weighing step 3 - Post dosing
If step 3 is blocked, then no activities in step 3 are performed. After step 3 is
enabled, SIWAREX FTA waits for standstill 3. If standstill 3 exists then the
tolerance check is performed and post dosing occurs if necessary. If no check stop
has been activated, the SIWAREX FTA switches to step 4.
5.5.5 Description of weighing step 4 - End/Intermediate check
No step 4 activities are performed if step 4 is blocked. After enabling step 4, SIWAREX
FTA waits for standstill 3, if it needs to perform a control weighing procedure, to
perform the evaluation of the previous weighing procedure. Totalizing occurs during
this weighing step in the operating modes gravimetric AWI big bag filling and big bag
emptying. If no control weighing procedure is to be performed, a check is performed to
determine whether a check stop is activated. SIWAREX FTA will otherwise switch to
step=0 or 5 according to the following list depending on the operating mode:
AWI single/continuous operation filling: continue with step 5
AWI catchw. filling, emptying, check: continue with step 0
AWT totalizing with tare re-weighing: continue with step 5, accompanied by
simultaneous switchover to discharge weighing and taring.
AWI gravim. big bag filling: continue with step 5
SIWAREX FTA
Weighing Functions
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