LED
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netPLC C100 | Startup Guide
DOC090701UM02EN | Revision 2 | English | 2009-10 | Released | Public
© Hilscher, 2009
15.2 LED APL
LED
Color
State
Meaning
Duo LED green/yellow
(green)
On
PLC is in state RUN. PLC program is executed.
(green)
Flashing
cyclic 1 Hz
No bootable PLC program available.
(yellow)
On
PLC is in state STOP. PLC program is not executed.
APL
(yellow)
Flashing
cyclic 4 Hz
An unexpected error during execution of the PLC program
has occurred.
Table 22: LED APL CoDeSys
15.3 LED PROFIBUS DP-Master
The subsequent table describes the meaning of the LEDs for the fieldbus
device when the firmware of the PROFIBUS DP Master protocol is loaded
to the device.
LED
Color
State
Meaning
Duo LED red/green
(green)
Flashing
acyclic
No configuration or stack error
(green)
Flashing
cyclic
Profibus is configured, but bus communication is not yet
released from the PLC
(green)
On
Communication to all Slaves is established
(red)
Flashing
cyclic
Communication to at least one Slave is disconnected
COM
Naming in
the device
drawing:
COM 0
(red)
On
Communication to one/all Slaves is disconnected
Table 23: LEDs PROFIBUS DP Master
