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2.3 LED Status Indicators
The communications card has two LED status indicators shown below. They indicate the status of the
communications card.
The tables below show the states of the LEDs and their meanings.
MS LED
Blinks between
Self-diagnostic test
green and red*
1
OFF
Power OFF
Lights in green
Hardware normal
Lights in red
Hardware error
NS LED
Blinks between
Self-diagnostic test
1
green and red*
OFF
Offline
Blinks in green
Online
Lights in green
Connection established
Blinks in red
Connection timeout
Lights in red
Connection error
1 Blinks in the pattern specified in the DeviceNet specifications.
*
2
*
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cannot be reset until the NS LED comes to stay on in green. A setting for ignoring
a connection error is detected. For details, refer to Chapter 9 "INVERTER REACTION TO DeviceNet
COMMUNICATIONS ERRORS."
2.4 DeviceNet Terminal Block
The DeviceNet terminal block is used to connect the DeviceNet cable.
For details, refer to Chapter 4 "WIRING AND CABLING."
- MS (Module Status)
Indicates the hardware status of the DeviceNet communications card.
- NS (Network Status)
Indicates the communication status on DeviceNet.
Table 2.1 MS LED state
Status
Running self-diagnostic test
upon power-on
Powered OFF
Hardware working normally
Communications card not
properly mounted or
hardware failure
Table 2.2 NS LED state
Status
Running self-diagnostic test
upon power-on
DeviceNet being offline
DeviceNet cabling correct and
communications card not
communicating on the
DeviceNet network
Communications card
communicating normally on
the DeviceNet network
Connection timeout between
the communications card and
the master
- Too short communication
cycle time
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
7
Meaning
This test takes 1 second.
The inverter issues
The inverter issues
Meaning
This test takes 1 second.
Waiting for a request from
the master
The inverter issues
The inverter issues
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Note
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.
–
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.
Note
–
–
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2
*
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*
2
is also available even if
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