Dr3 – Monitoring Time For The Digital Load Cells - Siemens SIWAREX FTA Device Manual

Weighing Functions
The application-dependent sensor parameters are set using the PESA load cell
configuration software.
The following sensor settings must be made for communication with
SIWAREX FTA:
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Note: Sufficient shielding must be provided.
5.2.32 DR3 – Monitoring time for the digital load cells
The receipt of the cyclic weight telegrams from the load cell type types WM, WMH
is monitored. If no telegram is received for the defined time period (in ms),
SIWAREX FTA indicates an operational fault No. 24 – Digital load cell not ready.
A status bit also provides (Status NAWI, Bit 29) the information on whether the
digital load cell is ready. If the status bit is not set, the weight values are not
evaluated because no plausible weight values have been received.
5.2.33 DR3 - Regulations
Scales in calibratable application have certain restrictions. The "OIML" entry
(country code) activates these restrictions They are deactivated by entering "----".
When "OIML" is entered, there is a warm-up time of 60s during which no weight
value is displayed.
5.2.34 DR3 - Unit of measurement
A 4 character string can be used as the unit of measurement, e.g.: t, kg, lbs.
5.2.35 DR3 - Stand-still range 2
Stand-still monitoring is used for recognising stable scale balance after starting an
automatic weighing procedure.
After the start weighing procedure with taring instruction, the SIWAREX FTA waits
for stand-still 2. The scale stand-still is defined if the weight value is changed within
a defined time (stand-still time) by less than a defined deviation range (Stand-still
value).
Note
With scales using calibration, the definition cannot be greater than for stand-still 1.
5-58
Protocol: Low Level Protocol
Baud rate: 9.600 baud
Start bits : 1 start bit
Data bits: 7 data bits
Parity: even
Stop bits: 1 stop bit
Interface: 2 wire connection/half duplex
SIWAREX FTA