Belden 934 692-001, Техническое руководство, Страница: 46 / 64

Diagnostic properties of the modules
46
7.5 Error in the system/sensor power
supply
Technical manual LioN-P/ -R PROFINET
Release 1.2 02/2016
7.5 Error in the system/sensor power supply
The voltage value for the system/sensor power supply is also monitored
globally. If the value goes outside the voltage range of 18 to 30 V, an error
message is created.
The U
S
indicator lights up red and the sensor undervoltage bit is set in the
module information byte.
The error message has no effect on the outputs and is not filtered, but is
reported immediately.
7.6 Diagnostic display in the integrated web
server
The LioN-R modules indicate the fault diagnosis on the status page of the
integrated web server. For information on opening the status page, please
refer to the chapters of this manual that follow.
In the data area of the status page, up to 5 bytes of diagnostics data can be
shown, depending on the module. The diagnostic bytes are structured as
follows, going from the left to the right:
Caution
It must definitely be ensured that the supply voltage, measured at the most
remote participant is not below 18 V DC from the perspective of the system
power supply.