Siemens SIRIUS M200D Manual page 143

Output LEDs OUT1 to OUT2 (possible colors: green / OFF)
Status
Off
Green
PROFINET port LEDs P1/P2 (possible colors LNK: Green/Off; ACT: Yellow / Off)
Figure 7-2
LNK LED
Off
Green
Green
Flashing green Not relevant
M200D PROFIBUS/PROFINET
Manual, 08/2014, A5E01577426A/RS-AA/004
Meaning
No 24 V DC
24 V present
Port LEDs
ACT LED Possible cause
Not relevant No connection to the IO Controller
No IO Controller available on the line
Not relevant Autonegotiation completed and PROFINET transmission rate
accepted
Yellow Transmission/reception is in progress
Flash test has been activated (e.g. via STEP 7)
7.1 Diagnostics with LED
Possible cause
No output signal
Output signal present
Diagnostics
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