Description
3.5 Design
SIMATIC IPC427C
20 Operating Instructions, 04/2009, A5E02414743-01
3.5.4 Status displays
Status displays LED Meaning LED Description
PWR Power supply OFF
GREEN
Standby mode
Supply voltage available
WD Watchdog status display OFF
GREEN
RED
Watchdog disabled Watchdog
enabled, monitoring time not
expired
Watchdog enabled, monitoring
time expired
User LED L1 OFF
YELLOW
RED
Can be controlled by user
programs
1
L1
SF
Group errors RED Can be controlled by controller
program (e.g. WinAC)
1
User LED L2 OFF
YELLOW
GREEN
Can be controlled by user
programs
1
L2
RUN/STOP
RUN
STOP
GREEN
YELLOW
Can be controlled by controller
program (e.g. WinAC)
1
1
You can find additional information about addressing the LEDs or the SRAM under a
Windows operating system in the section "Output register LED L1/L2". Example programs
for addressing the LEDs under Windows XP and under RMOS are available under the FAQ
at the Customer Support site Industry Automation and Drive Technologies - Homepage
(
http://www.siemens.com/automation/service&support).
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