Interfaces of the Device
4-16
4.2.3.3 Diagnostic
The diagnostics LEDs are located at the rear of the operating device. The LEDs show
the states of the bus system.
Figure 4-15 Arrangement of the INTERBUS diagnostics LEDs
The diagnostics LEDs at the operating device has the following functions:
Table 4-19 Functions of the INTERBUS diagnostics LEDs
Designation Color State Function
RC Green On Remote Bus Check
+5 V Green On Supply Voltage OK
Off No Supply Voltage
BA Green On Bus Active
Off Bus Not Active
RD Red On Remote Bus Inactive
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