Slave: Not Operating

	MS	NS
Master LED Condition	Green Light ON	Red Light Blinking
Absent Slave LED Condition	Light OFF	Light OFF

Process Flowchart

Causes of Error

Possible Cause	Examination Method	Countermeasure
Slave power OFF	Measure the power voltage of the slaves. (It should be within the range of sufficient voltage for slave operation.) NOTE: For slaves operating with communications power supply, measure voltage at the DeviceNet connector.	Supply power to the slave.
Broken unit	Slave unit replacement	Replace the unit with a new one.

Possible Cause

Examination Method

Countermeasure

Slave power OFF

Measure the power voltage of the slaves.

(It should be within the range of sufficient voltage for slave operation.)

NOTE: For slaves operating with communications power supply, measure voltage at the DeviceNet connector.

Supply power to the slave.

Broken unit

Slave unit replacement

Replace the unit with a new one.