Checking Network Status

As a first step, check the current condition of the network. There are different specifications of status display LED on a device in the PROFIBUS DP standard. This section explains how to check the network status assuming that Epson RC+ is configured as a master or slave.

1. Master Status: BF/ST LEDs

   LED	Color		State
   BF (Physical error)	Green	Red	ON	Blink	OFF
   ST (Communication Status)	Green	Red	ON	Blink	OFF

2. Station Number of Absent Slaves

   • See the status flag regarding to the removal and addition if the master has status information.
   • See the BF/ST LEDs of all slaves if the master has no status information.

3. Absent Slave Status: BF/ST LEDs

   LED	Color		State
   BF (Physical error)	Green	Red	ON	Blink	OFF
   ST (Communication Status)	Green	Red	ON	Blink	OFF

4. Physical Device Location of Absent Slave

   

5. Error Occurrence Condition

   • Immediate occurrence (high reproducibility)
   • Rare occurrence (low reproducibility)