WAGO-I/O-System 750
Device Description
49
750-370 PROFINET IO Fieldbus Coupler
Manual
Version 2.0.0
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4.4
Display Elements
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The operating condition of the fieldbus coupler or the node is displayed with the
help of illuminated indicators in the form of light-emitting diodes (LEDs).
The LED information is routed to the top of the case by light guides. In some
cases, the LEDs are multi-colored (red, green or orange).
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Figure 24: Display Elements
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For the diagnostics of the different domains fieldbus, node and supply voltage, the
LEDs can be divided into three groups:
Table 15: Display Elements Fieldbus Status
LED
Color
Meaning
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LINK
ACT 1
green
indicates a connection to the physical network at port 1 and flashes
with a frequency of 2 Hz for a period of 3 seconds when the fieldbus
coupler is requested to the participant flash test by the DCP protocol.
LINK
ACT 2
green
indicates a connection to the physical network at port 2 and flashes
with a frequency of 2 Hz for a period of 3 seconds when the fieldbus
coupler is requested to the participant flash test by the DCP protocol.
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BF
red
indicates whether communication via the PROFINET is functioning
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DIA
red
indicates the upcoming diagnoses. The signaling is not supported by
all I/O modules or have explicitly be enabled for each channel.
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Table 16: Display Elements Node Status
LED
Color
Meaning
I/O
red/green/
orange
indicates a state of start-up (orange) as well as the operation of the
node (green) and signals via a blink code (red) faults encountered.
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Table 17: Display Elements Supply Voltage
LED
Color
Meaning
A
green
indicates the status of the operating voltage – system
B
green
indicates the status of the operating voltage – power jumper contacts
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