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Appendix C
–
Screen overview
The system has the following screens, which are selected using the menu system:
NORMAL
─┬─
DOSING
│
├─ (STATUS)
│
├─
TOTALS
│
├─ SYSTEM INFO ──┬── SYSTEM SETTINGS
│ │
│
├── LO
AD CELL INFO.
│ │
│
├── LOAD CELL SIGNALS
│
│
│
├── LOAD
CELL DIAGNOSTICS
│
│
│
└──
ETHERNET STATUS
│
└─ SERVICE MODE ─┬─
SYSTEM (SETUP SYSTEM)
─────
INTELLIGENT SETUP
│
├─ WEIGHIN
G
──────┬── LOAD
CELLS
─
AUTO. CONFIG.
│ │
│ ├── COARSETARE
│
│
│ ├── ZEROING
│ │
│ ├── CALIBRATION ── CORNER CAL.
│ │
│
├── LIN
EARIZATION
│ │
│
└──
DISPLAY
│
├─ DOSING PAR.
│
└─
ETHERNET
───────── PRO
TOCOLS
During normal use it is only necessary to use the
NORMAL
and
DOSING
screen. The other
screens are used during installation and calibration.
Appendix D
–
Filters
Two types of filters can be applied: A filter on each sampling from the load cell and/or a filter
on each display weight reading update. The sampling frequency depends on the types and
number of load cells and the weight display reading update rate, as described below.
All filters are FIR filters with 7-100 taps.
Sampling filter
The sampling frequency and the filter frequency depend on the load cell communication
format and number of load cells.
Please notice:
Filtering is a time consuming operation
–
so selecting a long filter (with many
taps) on small sample rates (2-5 ms) may slow operation considerably down or even stop
Ethernet or load cell communication. A combination of a short sampling filter and a display
filter or a higher display update time is a better choice and will prevent these problems.
