Endress+Hauser silometer FMC 671 Z, Operating Instruction, Page: 36 / 68

6.1 Configuration
Analogue output range One of two analogue ranges can be set:
•
0 = 0 ... 20 mA/ 0...10 V (default)
•
1 = 4 ... 20 mA/ 2...10 V.
Switching the current output to 4...20 mAalso causes the voltage output to switch
to 2...10 V.
Step Matrix Entry Significance
1 V0H3 1 Selects 4 ... 20 mA/2 ...10 V range
2 - »E« Register entry
Output damping The output damping causes a damping of the analog outputs and the display. If the fluid’s
surface is turbulent, output damping may result in a smooth display.
•
0 = without filter.
•
1 = 1
…
100 = with filter (default 1 s).
Step Matrix Entry Significance
1 V0H4 e.g. 5 Output damping = 5 s
2 - »E« Register entry
0/4
…
20 mA signal
parameters
These parameters, entered in the units used for calibration or linearization, indicate the
start and end of range values of the analogue signal output.
•
0/4 mA value: V0H5
•
20 mA value: V0H6.
Step Matrix Entry Significance
1 V0H5 e.g. 100 Value for 0/4...20 mA
2 - »E« Registers entry
3 V0H6 e.g. 1100 Full scale value for 0/4...20 mA
4 - »E« Register entry
Turn-down scale:
Practically any start or end value can be entered, allowing the 0/4
…
20 mA signal to be
assigned to any section of the measuring range.
Reverse scale:
If V0H5 > V0H6 a warning appears at V9H0 and the alarm LED blinks. The instrument,
however, continuous to operate. In this case, set V0H5 > V0H6 and read out and take a
note of the parameters from V3H8/V3H9. By swapping the values (entering value from
V3H8 in V3H9 or value V3H9 in V3H8) the calibration of the D/A converter is inverted and
the output signal (voltage and current) reversed. The bar chart, however, still operates
in the same direction, i.e. rising from left to right.
Silometer FMC 671 Z/676 Z Chapter 6: Analogue Outputs
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