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WAGO-I/O-SYSTEM 750
Diagnostics 205
750-882 Media Redundancy ETHERNET Controller
Manual
1.5.0
11.1.2.1 USR LED
The bottom indicator LED (“USR”) is provided for visual output of information.
Control of the LED from the application program is conducted using the functions
from the WAGO-I/O-
PRO
library “Visual.lib”.
11.1.3 Evaluating Power Supply Status
The power supply unit of the device has two green LEDs that indicate the
status of the power supplies.
LED “A” indicates the 24 V supply of the fieldbus coupler.
LED “B” or “C” reports the power available on the power jumper contacts
for field side power.
Table 69: Power Supply Status Diagnostics – Solution in Event of Error
LED Status Meaning
Solution
A
Green
Operating voltage for the system is
available.
-
Off
No power is available for the system
Check the power supply for the system
(24 V and 0 V).
B or C
Green
The operating voltage for power jumper
contacts is available.
-
Off
No operating voltage is available for the
power jumper contacts.
Check the power supply for the power
jumper contacts (24 V and 0 V).