GE Industrial Solutions AF-650 GP PROFINET - Manual (Page 10)

3.1.4 LED Behaviour
The option has 3 bi-coloured LEDs that allow a fast and
detailed diagnosis. The three LEDs are each linked to its
unique part of the PROFINET option:
LED Label Description
MS Module Status, reflects the activity on the
PROFINET stack
NS1 Network Status 1, reflects the activity on port 1
NS2 Network Status 2, reflects the activity on port 2
Table 3.3
Illustration 3.3 Overview of the Option
How to Install PROFINET Operating Instruction
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3 3