Analog Input Modules
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130
Diagnostics
This module has the following diagnostic data per channel:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
- - - - - overcurrent Wire break Measured
value out of
range
Diagnostics Meaning
Measured value out of range Underflow diagnostics in temperature measurement ranges only
threshold: 1 % of the positive measurement range end value
Wire break
overcurrent in temperature measurement ranges only
threshold: 5 (loop resistance)
NOTE
In 3-wire measurement with PT100- sensor and at temperatures of below -177 °C, the
module can not distinguish between short-circuit and wire break. In this case a ”short-
circuit”- diagnostic is generated.
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