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
8.16 PROFIBUS DP Slave
For the PROFIBUS DP Slave protocol, the communication status LED
COM
can assume the states described below. This description is valid from
stack version V2.7.
LED
Color
State
Meaning
Duo LED red/green
(green)
On
RUN, cyclic communication
(green)
Flashing,
cyclic (2 Hz)
Master is in CLEAR state.
(red)
Flashing,
acyclic (1 Hz)
Device is not configured.
(red)
Flashing,
cyclic (2 Hz)
STOP, no communication, connection error
(red)
On
Wrong configuration at PROFIBUS DP Slave.
COM
(off)
Off
Device is not switched on or network power is missing.
Table 62: LED states for the PROFIBUS DP Slave protocol
LED State
Definition
On
The indicator is constantly on.
Off
The indicator is constantly off.
Flashing,
acyclic (1 Hz)
The indicator turns on and off in irregular intervals, with a frequency of 1 Hz:
“on” for 750 ms, followed by “off” for 250 ms.
Flashing,
cyclic (2 Hz)
The indicator turns on and off with a frequency of 2 Hz:
“on” for 250 ms, followed by “off” for 250 ms.
Table 63: LED state definitions for the PROFIBUS DP Slave 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.
