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ba_aed104_8_e.doc
The
output scaling
depends upon the parameter of the command
NOV
.
Output format of the measuring value at
nominal load
NOV=0
NOV>0
2 Byte binary
20000
NOV value
4 Byte binary
5120000
NOV value
ASCII
1000000
NOV value
With the 2-byte binary output, the NOV value must be < 30000, otherwise the measured value is output with
overflow or underflow ( 7fff
H
or 8000
H
; H: Hexadecimal). With NOV30000, the overdriving reserve is only still
approx. 2700 digits.
The
response time
for the measured value query is determined by the integration time (command
ICR
):
Filter settings with FMD0 (Querry: MSV?;)
ICR
Output rate Mv/s
Response time [ms], approx. with MSV?;
0
100
10
1
50
20
2
25
40
3
12
80
4
6
165
5
3
333
6
2
500
7
1
1000
A predefined number P1 of measured values can be output via a command MSV?P1;. The reaction time lies
between the output of two measured values. The end identification (CR LF) is output only for the
last measured
value
. The total time for the acquisition of P1 measured values is calculated as:
Measuring time [ms] = P1
∗
2
ICR
∗
10ms + 5ms
,
with ICR = Measuring rate
There is a continuous output of measured values with
MSV?0;.
This output can be stopped only through the
commands STP, RES or voltage switch-off. No other parameters can be changed during the continuous output.
In the 4-byte binary output or in the ASCII output, the measured value status can be transmitted with the
measured value (see commands
COF
).
Error messages in the measured value status
Contents of the status byte in
the measured value output
Possible cause
Bit 0 = 1, Nett-Overflow
Tare value too large
Bit 1 = 1, Gross-Overflow
Scaling too sensitive
Bit 2 = 1, ADU-Overflow
ADU
overdrives
(input >± 2.5mV/V)
Bit 3 1= Standstill
Measuring values are in the range of still standing (±1d/s).
Bit 7, 6 = Measured values not coherent
Do not fit together. Measured values cannot be output
justified in the selected configuration