7.1.1.
Scaling the display range
Over- and un der flows are dis played as fol lows:
An
over flow
is dis played as
nnnn;
this oc curs if:
• the in put si gnal ex ceeds the per mis si ble ma xi mum around more than 0,5V or
1mA; e.g. in put vol ta ge >10,5 V or in put cur rent >21 mA.
• the dis play ran ge ex ceeds the pos si ble ma xi mum. (> 9999)
An
un der flow
is dis played as
uuuu;
this oc curs if:
• the in put si gnal ex ceeds the per mis si ble mi ni mum around more than 0,5V or
1mA; e.g. in put vol ta ge < -0,5V or in put cur rent < -1mA or 3mA.
• the dis play ran ge ex ceeds the pos si ble mi ni mum. (< -999)
• the pa ra me ter P0- 03 has the va lue
3
(de ci mal point af ter the first de ca de:
X.XXX
)
(in this case is the dis play of ne ga ti ve va lues is not pos si ble) and the dis played
va lue would be be low
0.000
.
The dis play va lues for the mi ni mum and the ma xi mum in put si gnal is set in the pa -
ra me ters 0-01 and 0-02.
Ex amp le:
In put ran ge 0 bis +10 V,
Dis
play ran
ge: -999 bis
+9999
Step
Param.
Value
1.
0-01
-999
2.
0-02
+9999
3.
0End
End
12
7. Programming
9999
Display value
Parameter
0-02
9000
8000
7000
6000
5000
4000
3000
2000
1000
1
2
3
4
5
6
7
8
9
10
Overflow
Underflow
Parameter
0-01
-999
Input voltage [V]
10,5
-0,5
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