Instructions

NetTEST II Menu Guide
14 © KUNBUS
 "Error: A<->B Short circuit or unpowered termination":
There is a low ohmic resistance between the signal wires,
which might be caused for example by a bus termination
without power supply.
 "Error: A<->B Irregularity, wrong termination or illegal
termination ": There is an unacceptable ohmic resistance
between the signal wires that stands in no relation to the
magnitude of a bus termination either with or without
power supply. The cause might be for example an
incorrectly connected bus termination.
 "Error: A<->B Terminator": There is a powered bus
termination (possibly along the line), which impedes
impedance and length measurement.
 "Error: A<->shield / B<->shield high imp. fault": There
is a high ohmic resistance between signal wire and shield.
 "Error: A<->B Capacitive load, junction or Impedance
changes": There is a capacitive resistance between the
signal wires, which might be caused by a PROFIBUS
device with unauthorized bus coupling, a branch or switch
over to a inadmissible cable type.
 "Error: Possible broken line of shield / of signal line A/B
distance XX m": Result of the length measurement is
significantly different for the various lines and shields.
 "Error: uncertain situation / possibly broken line of shield
or of signal line A/B. Please repeat measurement at the
opposite segment-end": Result of the cable length
measurement for the various different lines and shields is
so different, that no specific statement about the respective
line segment is possible. Should the measurement on the
other line end give correct results, then the measurement
may be considered o.k. In particular, this effect may be
observed with cable coils or cable drums in the
PROFIBUS network.