Siemens SIMATIC IPC427C Operations Instructions Page 23

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Description
3.6 Design
SIMATIC IPC427C
Operating Instructions, 10/2010, A5E02414743-03
23
3.6.4 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
L1
User LED L1 OFF
YELLOW
RED
Can be controlled by user
programs
1
SF Group errors RED Can be controlled by controller
program (e.g. WinAC)
1
L2
User LED L2 OFF
YELLOW
GREEN
Can be controlled by user
programs
1
RUN/STOP RUN
STOP
GREEN
YELLOW
Can be controlled by controller
program (e.g. WinAC)
1
1
For additional information about addressing the LEDs or the SRAM under a Windows
operating system, refer to section Output register user LED L1/L2 (read/write, address
404Eh) (Pag
e 147). Example programs for addressing the LEDs on Wind
ows operating
systems and on RMOS are available on the FAQ pages at Siemens Customer Support
Industry Automation and Drive Technologies - Homepage
(http://www.siemens.com/automation/service&support
).
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