S7-PCI315:LED PROFIBUS DP-Master

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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

Color State Meaning
Duo LED red/green
LED green.png
(green) 		Flashing acyclic No configuration or stack error
LED green.png
(green) 		Flashing cyclic PROFIBUS is configured, but bus communication is not yet released from the PLC.
LED green.png
(green) 		On Communication to all Slaves is established.
LED red.png
(red) 		Flashing cyclic Communication to at least one Slave is disconnected.
LED red.png
(red) 		On Communication to one/all Slaves is disconnected.
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