10
Since all diagnostic cases can be signalled via the switching output in
3-wire operation, the analogue output only leaves its measured tempera-
ture value in diagnostic case of category "failure"� This ensures maximum
use of the analogue output�
The parameter [dOU1] is used to define how the diagnostic output reacts to diag-
nostic messages:
Normal
Diagnostic message
[dOU1]
Warning
Alarm
Failure
= nc
normally closed
= nc+
normally closed,
extended
2 Hz
= no+
normally open,
extended
2 Hz
= Hb
heartbeat
4 Hz
2 Hz
Table 3: Switching signal in diagnostic case
5.3 IO-Link
This unit has an IO-Link communication interface which enables direct access to
process and diagnostic data� In addition it is possible to set the parameters of the
unit during operation� Operation of the unit via IO-Link interface requires an IO-
Link capable module (IO-Link master)�
With a PC, suitable IO-Link software and an IO-Link adapter cable communication
is possible when the system is not in operation�
The IODDs necessary for the configuration of the unit, detailed information about
process data structure, diagnostic information, parameter addresses and the
necessary information about the required IO-Link hardware and software can be
found at www�ifm�com�
