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8.3
Channel dependent diagnostic interrupts
There are five channel dependent diagnostic interrupts:
• Configuration or parameterization errors
• Common mode error
• Wire break
• Underflow
• Overflow
Note
Here we show you only the channel specific diagnosis for the measuring modes 2-
or
4-wire current transducers. Other measuring modes are similar but not described here.
8.3.1
Configuration / parameterization errors
The position of the measuring range modules does not match the measur-
ing mode set in the hardware configuration.
8.3.2
Common mode errors
The voltage difference U
age potential of the measuring circuit (M
In our example this failure cannot occur, because M
a 2-wire transducer (fixed potential).
between the inputs (M-) and the common volt-
cm
48
Getting Started SM331 AI 8x12bit Part1: 4-20mA
) is too high.
ana
is connected to M for
ana
A5E00253410
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