Overview
1.2 Design of the device
SIMATIC IPC427D
Operating Instructions, 05/2017, A5E31347215-AB
19
1.2.2
Status displays
Device with PROFIBUS
LED
State
Description
PC ON/WD
Off
-
Green
BIOS ready to boot
Flashing green/yellow
(1 Hz)
BIOS in POST, power switch on
Yellow
Idle state
Flashing red (1 Hz)
Watchdog status display: active
RUN/STOP / L1
Off
-
Green
Can be controlled by user program
Yellow
Can be controlled by controller program (e.g.
WinAC)
ERROR / L2
Off
-
Red
-
Flashing red
Can be controlled by user program or controller
program (e.g. WinAC)
MAINT /
L3
Off
-
Yellow
-
Red
Can be controlled by controller program
(e.g. WinAC) and shows group errors of the on-
board CP1616 interface.
For additional information on controlling the LEDs or the MRAM with a Windows operating
system, please refer to Output register user LED L1/L2/L3 (read/write, address 404Eh)
(Page 135). Example programs for controlling the LEDs on Windows operating systems are
available on the Customer Support page of Siemens Industry Automation and Drive
Technologies. (