LED Descriptions
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PC Cards cifX Compact PCI, Mini PCI, Mini PCIe, PCI-104 | Installation, Operation and Hardware Description
DOC120205UM53EN | Revision 53 | English | 2019-03 | Released | Public
© Hilscher, 2008-2019
8.19 PROFIBUS DP Master
8.19.1 1 Communication Status LED
For the PROFIBUS DP Master protocol, the communication status LED
COM
can assume the states described below. This description is valid from
stack version V2.6.
LED
Color
State
Meaning
cifX with 1 Communication Status LED
(current Hardware Revision)
Duo LED red/green
(green)
On
Communication to all Slaves is established.
(green)
Flashing (5 Hz)
PROFIBUS is configured, but bus communication is not yet released
from the application.
(green)
Flashing acyclic
No configuration or faulty configuration
(red)
Flashing (5 Hz)
Communication to at least one Slave is disconnected.
(red)
On
Communication to all Slaves is disconnected or another serious error
has occurred.
Redundant Mode: The active Master was not found.
COM
(off)
Off
Device is not switched on or network power is missing.
Table 81: LED states for the PROFIBUS DP Master protocol – 1 Communication Status LED
(current Hardware Revision)
LED State
Definition
Flashing (5 Hz)
The indicator turns on and off with a frequency of 5 Hz:
"on" for 100 ms, followed by "off" for 100 ms.
Flashing
acyclic
The indicator turns on and off in irregular intervals.
Table 82: LED state definitions for the PROFIBUS DP Master protocol
