Epson EM07ZS1647F User Manual page 95

♦ Causes of Error
Possible Cause
Slave power OFF
Broken unit
4.1.2.1.2 Slave: Communication Error Detection / Busoff Detection / Not-added
Fieldbus I/O Rev.6
Measure the power voltage of the
slaves. (It should be within the range
of sufficient voltage for the slave
operation.)
NOTE: For slaves operating with
Slave unit replacement
Master LED Condition
(1) Absent Slave LED Condition
(Communication error detection)
(2) Absent Slave LED Condition
(Busoff detection)
(3) Absent Slave LED Condition
(Slave not added to the network)
4. Troubleshooting (DeviceNet)
Examination Method
communications power
supply, measure voltage at
the DeviceNet connector.
MS
Green Light ON
Green Light ON
Green Light ON
Green Light ON
Countermeasure
Supply power to the
slave.
Replace the broken
slave unit with a new
one.
NS
Red Light Blinking
Red Light Blinking
Red Light ON
Light OFF
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