25 Analog input module XN-322-8AI-PTKT
25.5 Diagnostics
XN300 slice modules 02/24 MN050002EN Eaton.com 184
25.5 Diagnostics
If the reading falls within the permissible measuring range and both the
range and channel diagnostics read "FALSE," the valid reading will be shown.
If the measuring range is exceeded or fallen below, but the reading still falls
within the limits for range diagnostics, the fact that the permissible
measuring range has been exceeded/fallen below will be indicated by setting
the range diagnostics' (measuring range diagnostics) status to "TRUE." In this
case, the open wire diagnostics will remain "FALSE," and a reading will be
shown.
If the reading exceeds or falls below the limits for range diagnostics, the
device will be unable to perform a measurement, just like in the event of an
open wire. In this case, the open wire diagnostics will signal the fault by
having their status set to "TRUE," while the range diagnostics will keep a
status of "FALSE." When this occurs, a value of "-30000" will be shown as the
reading.
If a channel is disabled, there will not be any measurements, and the open
wire diagnostics will indicate this with the "TRUE" status.
￫
Range and open wire diagnostics must be taken into account in
order to ensure that the reading shown is being interpreted
correctly.
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