7.2 Voltage Errors at M12 Slots
(Sensor Short Circuit)
7 Diagnostic Properties of the
Modules
of the module. The value of this parameter can range from 0 to 255 ms; the
factory setting is 80 ms.
The filter is used to avoid premature error messages when a capacitive load is
activated or an inductive load is deactivated, and during other voltage peaks
when a status changes.
When a channel is in the static state – that is, when it is permanently activated
or deactivated – the controller uses a fixed specified duration of 100 ms for
filtering the error message.
7.2 Voltage Errors at M12 Slots (Sensor Short
Circuit)
On each M12 input connector of the modules, contact 1 provides a 24 V
potential for power supply. This potential is obtained from the system/sensor
voltage U
S
and monitored.
In the case of a sensor short-circuit, a voltage error is reported. Both channel
indicators of the M12 input socket light up red, and the relevant error bit for
the sensor short-circuit is set in the diagnosis bytes.
The error message is filtered by the "Surveillance Timeout" parameter. The
same parameters as for the channel errors are also used for the voltage
errors.
7.3 Overload of Output Drivers
The output drivers of the modules with output functions (variants 16DO,
8DI/8DO and 16DI/DO) report an error when they detect an overload. This
error is reported by setting the relevant channel error bits in the diagnosis
bytes.
Technical Manual LioN-P PROFINET
Version 2.0 10/2017
48