SAFECONF configuration software
103503_en_03 PHOENIX CONTACT 4-13
Ensuring signal redundancy by using dual signals:
When evaluating two-channel sensors or control devices, dual signals should always be
used to connect the two channels.
Dual signals always consist of one "even" and one "odd" input signal, e.g., I0 and I1.
As input signals with even and odd IDs are processed in different ways in the safety
module, using dual signals ensures that the safety module will perform redundant
processing.
If required, dual signals can be split into two individual signals.
Please note: Dual signals are not connected to one another internally; they are simply
grouped together.
Standard alarm signals M0 to M3: As well as 20 safe inputs and four safe outputs, the
safety module also provides four non-safety-related alarm outputs. These alarm outputs
can be used, for example, to control a standard PLC or a simple detector unit (e.g., a
signal lamp). Since the alarm signals are not safe, they are shown in gray rather than
yellow in the connection editor.
Alarm outputs are edited in the same way as safe I/O signals.
Clock outputs T0 and T1 of the safety module cannot be moved to the connection editor
using drag & drop. To implement cross-circuit detection using these two test pulses, the
relevant safety module inputs must instead be parameterized accordingly.
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