Analog input modules
D300529 0115 - BL67 I/O modules6-26
6.4.4 Diagnostic data
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
Diagnostics Meaning
NOTE
-----OvercurrentWire break Measured value
out o
f range
Table 6-16:
Diagnostics
Measured value out of range Threshold: 1 % of positive measurement range
end value.
Underflow diagnostics in temperature measure-
ment ranges only.
Wire break
Overcurrent Threshold: 5 Ω (loop
resistance)
In temperature measurement ranges only
In 3-wire measurement with PT100- sensor and at temperatures of below -177 °C, the module
can not distinguish between overcurrent and wire break. In this case, the diagnostic "overcur-
rent" is generated.
To Next Page
Loading...
