Siemens Siwarex U, Device Manual

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4BWEIGHING FUNCTIONS
Name Model Length Default Range of values/Meaning
Current weight
INT 2 --- Current weight
5.8. 5.8.1
Scale status
BYTE 1 --- Scale status
5.8.2
Update
counter BYTE 1 --- Update counter
5.8.3
Filtered ADC value
WORD 2 --- Filtered digital value from the AD converter
5.8.4
Operating messages WORD 2 0 Current operating messages (faults)
5.8.5
Data and command
errors WORD 2 0 Data or command errors
5.8.6
10
Table 5-6 Allocation of DR 31/32
5.8.1 DR 31/32 – current weight
The temporary weight value after signal filtering.
5.8.2 DR 31/32 – scale status
The status information gives information about the current status of the scale.
Bit_no. Name Range of values/Meaning
0 Operational fault 1 = an operational fault exists
1 Data or command errors
1 = during the last action, a data or command error occurred.
2 Limit value 1 active
1 = limit value 1 is activated
3 Limit value 2 active
1 = limit value 2 is activated
4 Adjusted 1 = scale is already adjusted
5 Measured value toggle bit
Measured value toggle bit is inverted with each new measured value
6 Live bit
Live bit is set or reset according to specification (I/O communication only)
7 Command
acknowledgement
Command bit is inverted after an instruction (I/O communication only)
Table 5-7 Scale status
5.8.3 DR 31/32 – update counter
The measurement value update counter is incremented by SIWAREX U each time
that a new measurement value is prepared by the ADC (every 20 ms). If a counter
level of 255 is reached, the counter value 0 is output at the next measurement cycle.
5.8.4 DR 30 – filtered digital value from the AD converter
The current digital value from the AD converter after the digital signal filtering.
The filter parameters are specified in DR3/4.
5-38
SIWAREX U