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netPLC C100 | Startup Guide
DOC090701UM02EN | Revision 2 | English | 2009-10 | Released | Public
© Hilscher, 2009
15 LED
Meaning and Naming of the LED at the slot PLC.
LED Naming in
the Device
Drawing
PROFIBUS-DP
SYS
(yellow / green)
SYS
(System Status)
APL
(yellow / green)
APL
(Application,
slot PLC)
COM
COM 0
(Communication
Status)
(red / green)
(Communication
status)
COM 1
(Communication
Status)
(red / green)
(not used)
Table 20: LED Naming in the Device Drawing and LED Meaning and Naming by Protocol
15.1 LED SYS
The following table describes the meaning of the system LED.
LED
Color
State
Meaning
Duo LED yellow/green
(green)
On
Operating System running
(green/yellow)
Blinking
green/yellow
Bootloader is waiting for firmware
(yellow)
Blinking
Heavy system error: PLC in stop.
(yellow)
static
Bootloader is waiting for software
SYS
-
Off
Power supply for the device is missing or hardware
defect.
Table 21: System LED
