188 Diagnostics
WAGO-I/O-SYSTEM
750
750-880, 750-880/025-000 ETHERNET Programmable Fieldbus Controller
Manual
Version 1.0.1
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11 Diagnostics
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11.1
LED Signaling
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For on-site diagnostics, the fieldbus controller has several LEDs that indicate the
operational status of the controller or the entire node (see following figure).
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LINK
ACT
MS
I/O
ETHERNET
NS
LINK
ACT 1
2
USR
2
4
V 0V
01
02
C
D
B
A
A
B
SD
Figure 76: Display Elements
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The diagnostics displays and their significance are explained in detail in the
following chapter.
The LEDs are assigned in groups to the various diagnostics areas:
Table 58: LED assignment for diagnostics
Diagnostics area
LEDs
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Fieldbus status
• LINK ACT Port 1
• LINK ACT Port 2
• MS
• NS
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Node status
• I/O
• USR
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SD memory card status
• SD
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Status Supply Voltage
• A (system supply)
• B (field supply)
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11.1.1 Evaluating Fieldbus Status
The health of the ETHERNET Fieldbus is signaled through the top LED group
('LINK ACT 1, 2', 'MS', und 'NS').
Pos: 88.8.2 /Serie 750 (WAGO-I/O-SYSTEM)/Diagnose/Feldbuskoppler/-controller/Feldbusstatus auswerten ('LINK ACT 1, 2', 'MS', 'NS') mit Ethernet/IP - MS und NS für Ethernet/IP @ 9\mod_1282558697263_21.doc @ 64156 @ @ 1
The two-colored LEDs ‘MS’ (module status) and ‘NS’ (network status) are solely
used by the Ethernet/IP protocol. These two LEDs conform to the Ethernet/IP
specifications.
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