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DeviceNet LED Indicator
The DeviceNet option card has a bicolor (red and green) LED on the upper left edge, used to indicate
the Module/Network Status (MNS).
LED
Not Powered
Off
OR
Not On-line
Device Operational
Steady Green
AND
On-line/Connected
Device Operational AND
On-line/Not Connected
OR
Flashes Green
Device On-line AND
Device needs
commissioning
Minor Fault
Flashes Red
OR
Connection Time-Out
Critical Fault
Steady Red
OR
Critical Link Failure
Communication Fault
AND
Flashes Red and
Received an "Identify
Green alternately
Comm Fault Request –
Long Protocol" message
Message Size
Connection Instance
I/O Messaging
Explicit Messaging
Polled I/O Messaging Connection
Table 3. Transmission response by ASD to different Received Data sizes.
Received Data Size (RDS) Compared to
received_connection_size Attribute
Received_connection_size
RDS Smaller than
Received_connection_size
RDS Same as
Received_connection_size
RDS Larger than
Explicit Messaging Connection
This is the maximum message length.
10
Status
DeviceNet module is not on–line because:
•
•
The DeviceNet module is connected and operating normally.
The DeviceNet module is operating in a normal condition and is on–line
but not connected because either:
•
•
•
Recoverable fault has been detected.
•
One or more I/O Connections are in the Timed-Out state.
•
The DeviceNet module has an unrecoverable fault and may need
replacing because of a failed communication device.
•
The DeviceNet module has detected an error that has rendered it
incapable of communicating on the network (Duplicate MAC ID, or
Bus–Off).
A specific Communication Fault indicator meaning the DeviceNet mod-
ule has detected a Network Access error and is in the Communication
Faulted state, and has subsequently received and accepted an
"Identify Communication Faulted Request –- Long Protocol" message.
Transmitted
4, 8, or 12 bytes
Item Displayed
It may not be powered.
It has not completed the Dup_MAC_ID test yet.
The DeviceNet module has passed the Dup_MAC_ID test and is
on-line but has not established connections to other nodes.
The device configuration is missing, incomplete, or incorrect.
55 bytes
Received Data
Connection Transmissions
Ignored by ASD
ASD Will Transmit Normally
Processed by ASD
ASD Will Transmit Normally
Ignored by ASD
ASD Will Not Transmit
DeviceNet Module Installation and Operation Manual
Received
4, 8, or 12 bytes
55 bytes
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