7
- MS (Module Status)
Indicates the hardware status of the DeviceNet interface option.
- NS (Network Status)
Indicates the communication status on DeviceNet.
2.3 LED Status Indicators
The two LED status indicators show the status of this option.
The tables below show the states of the LEDs and their meanings.
Table 2.1 MS LED state
MS LED Status Meaning Note
Blinks between
green and red*
1
Self-diagnostic test
Running self-diagnostic test
upon power-on
This test takes 1 second.
OFF
Power OFF Powered OFF
The inverter issues
er4
.
Lights in green
Hardware normal Hardware working normally
–
Lights in red
Hardware error
Option not properly mounted
or the option is faulty
The inverter issues
er4
.
Table 2.2 NS LED state
NS LED Status Meaning Note
Blinks between
green and red*
1
Self-diagnostic test
Running self-diagnostic test
upon power-on
This test takes 1 second.
OFF
Offline
DeviceNet being offline –
Blinks in green
Online
DeviceNet cabling correct
Option not communicating on
the DeviceNet network
Waiting for a request from
the master
Lights in green
Connection established
Option communicating
normally on the DeviceNet
network
–
Blinks in red
Connection timeout
Connection timeout between
the option and the master
- Too short communication
cycle time
The inverter issues
er5
*
2
Lights in red
Connection error
Improper DeviceNet cabling, or
improper settings
- Node address double
assigned
- Data rate mismatch
- Bus-off state detected
- Power supply cable for the
DeviceNet unconnected
- Improper wiring for the
DeviceNet terminal block
The inverter issues
er5
*
2
*
1
Blinks in the pattern specified in the DeviceNet specifications.
*
2
er5
cannot be reset until the NS LED comes to stay on in green. A setting for ignoring
er5
is also available even if
a connection error is detected. For details, refer to Chapter 9, Section 1 "INVERTER REACTION TO DeviceNet
COMMUNICATIONS ERRORS."
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