Siemens SIMATIC IPC677D - 1.2.2 Status displays

Overview
1.2 Design of the device
SIMATIC IPC677D
16 Operating Instructions, 09/2014, A5E32995420-AC
1.2.2
Status displays
The status display consists of four two-colored LEDs.
Position
LED
State
Description
①
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
②
RUN/STOP /
L1
Off
-
Green
Can be controlled by user program
Yellow Can be controlled by controller program
(e.g. WinAC)
③
ERROR / L2
Off
-
Red
-
Flashing red Can be controlled by user program or controller
program (e.g. WinAC)
④
MAINT /
L3
Off
-
Yellow
-
Red Can be controlled by controller program
(e.g. WinAC)
For additional information on controlling the LEDs or the SRAM with a Windows operating
system, please refer to the chapter "Buffer memory SRAM (optional) (Page 66)". Example
programs for controlling the LEDs under Windows operating systems is available on the
Internet at the following address: Technical Support
(http://www.siemens.de/automation/csi_en_WW)