Siemens SIMADYN D Manual page 171

Communications configuring
LED statuses when
SIMADYN D runs-
up
3-82
These LEDs only provide information as to whether the SIMADYN D as
self-contained autonomous system is functioning correctly, or if there are
faults/errors. Bus activities or communications with other bus nodes are
not evaluated.
• When the power is applied, both LEDs briefly light-up (approximately
half a second).
• The yellow LED then goes dark, so that only the green LED is lit
during the remaining run-up time (approx. five seconds). Downloading
is not possible during this time.
• After the run-up phase has been completed, the operating status of
the SS52 is displayed.
System- and communication configuring D7-SYS - SIMADYN D
Edition 12.2003