Epson EM07ZS1647F manual Problems and Countermeasures, Master Unit LED Error Description Reference

4. Troubleshooting (DeviceNet)

4.1.2 Problems and Countermeasures

Master Unit LED		Error	Description [Reference]
MS	NS
Green	Green	Normal	- Normal condition
Light ON	Light ON	communication
Green	Green	During connection	- Processing connection establishment
Light ON	Light	establishment	(The NS LED will be ON in green in a few seconds.)
	Blinking		- Master function in stop state
			(When communication does not start, master analysis
			with NetMeter is required.)
Green	Red Light	Communication	[Refer to the section 4.1.2.1 Master: Communication
Light ON	Blinking	error	Error.]
			- Slave disconnected from the network (Remote I/O
			communication error)
			- Slave not added to the network (Scan list collation
			error)
			- Communications power supply OFF (Error detection
			after the communication establishment)
Green	Red Light	Busoff detection	[Refer to the section 4.1.2.2 Master: Busoff
Light ON	ON	Duplicate MAC ID	Detection.]
			- Busoff detection: Communication stopped due to
			critical error.
			- Duplicate MAC ID: The MAC ID configuration was
			duplicated. (This error occurs only during unit start-
			up)
Green	Light OFF	Unestablished	[Refer to the section 4.1.2.3 Master: Unestablished
Light ON		communication	Communication.]
			- No slave (Error detection before communication
			establishment)
			- Communications power supply OFF (Error detection
			before the communication establishment)
			- Duplicate MAC ID: The MAC ID configuration was
			duplicated.
Red Light	No Matter	Configuration error	- Master unit configuration error
Blinking			Refer to the respective device manuals.
			[Refer to the section 4.1.2.4 Master: Configuration
			Error.]
			When EPSON RC+ was configured as a master:
			- Slave disconnected from the network (Remote I/O
			communication error)
			- Slave not added to the network (Scan list collation
			error)
			- Duplicate MAC ID: The MAC ID configuration was
			duplicated.
Red Light	No Matter	Module error	- Broken master unit → Unit Replacement
ON
Light OFF	Green	Absent slave	[Refer to the section 4.1.2.5 Absent Slave.]
	Light		- No slave (Error detection before communication
	Blinking		establishment)
			- Communications power supply OFF
Light OFF	Light OFF	Uninitialized	[Refer to the section 4.1.2.6 Uninitialized Network.]
		network	- Master unit start-up error
		Absent slave	- No slave (Error detection before communication
			establishment)
			- Communications power supply OFF

80 Fieldbus I/O Rev.6