View source for S7-PCI315: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

{| class="wikitable"
!Color !! State !! Meaning
|-
|colspan="3" style="text-align:center"|  Duo LED red/green
|-
|style="width: 6em"|[[Image:LED_green.png]]<br />(green) ||style="width: 6em"| Flashing acyclic ||style="width: 19em"| No configuration or stack error
|-
|[[Image:LED_green.png]]<br />(green) || Flashing cyclic  || PROFIBUS is configured, but bus communication is not yet released from the PLC.
|-
|[[Image:LED_green.png]]<br />(green) || On || Communication to all Slaves is established.
|-
|[[Image:LED_red.png]]<br />(red) || Flashing cyclic || Communication to at least one Slave is disconnected.
|-
|[[Image:LED_red.png]]<br />(red) || On || Communication to one/all Slaves is disconnected.
|}