Epson EM07ZS1647F manual BF Physical error † Green † Red

4. Troubleshooting (PROFIBUS DP)

4.2.1.2 Check Network Status

First of all, you should 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			Light Condition
	BF (Physical error)	† Green	† Red	† ON	† Blinking	† OFF
	ST (Communication Status)	† Green	† Red	† ON	† Blinking	† OFF

(2) Station Number of Absent Slaves

Absent slaves are disconnected from or not added to the network.

1.See the status flag regarding to the removal and addition if the master has status information.

2.See the BF/ST LEDs of all slaves if the master has no status information.

(3)Absent Slave Status: BF/ST LEDs

LED	Color			Light Condition
BF (Physical error)	† Green	† Red	† ON	† Blinking	† OFF
ST (Communication Status)	† Green	† Red	† ON	† Blinking	† OFF

(4) Physical Node Location of Absent Slave

Master PLC

Terminating Resistor ON

Slave Slave Slave

Terminating Resistor ON

Terminating

Resistor ON

Slave Slave Slave

Start the examination from this block when an error occurred here.

(5)Error Occurrence Condition

†Immediate occurrence (high reproducibility)

†Rare occurrence (low reproducibility)

Fieldbus I/O Rev.6 113