LED Descriptions
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PC Cards cifX PCI, PCIe, Low Profile PCIe | Installation, Operation and Hardware Description
DOC120204UM46EN | Revision 46 | English | 2015-12 | Relelased | Public
© Hilscher, 2008-2015
8.15 PROFIBUS DP Master
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
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 60: LED states for the PROFIBUS DP Master protocol
LED State
Definition
On
The indicator is constantly on.
Off
The indicator is constantly off.
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 61: LED state definitions for the PROFIBUS DP Master protocol
Note:
For 2-Channel Devices per channel works 1 communication LED.
* Descriptions for 2-Communication Status LEDs of earlier device revisions are included
in the user manual for PC cards cifX fieldbus up to manual rev. 23.
