10
DeviceNet Module Installation and Operation Manual
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).
Message Size
Polled I/O Messaging Connection
Table 3. Transmission response by ASD to different Received Data sizes.
Explicit Messaging Connection
This is the maximum message length.
LED
Status
Item Displayed
Off
Not Powered
OR
Not On-line
DeviceNet module is not on–line because:
•
It may not be powered.
•
It has not completed the Dup_MAC_ID test yet.
Steady Green
Device Operational
AND
On-line/Connected
The DeviceNet module is connected and operating normally.
Flashes Green
Device Operational AND
On-line/Not Connected
OR
Device On-line AND
Device needs
commissioning
The DeviceNet module is operating in a normal condition and is on–line
but not connected because either:
•
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.
Flashes Red
Minor Fault
OR
Connection Time-Out
•
Recoverable fault has been detected.
•
One or more I/O Connections are in the Timed-Out state.
Steady Red
Critical Fault
OR
Critical Link Failure
•
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).
Flashes Red and
Green alternately
Communication Fault
AND
Received an “Identify
Comm Fault Request –
Long Protocol” message
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.
Connection Instance
Transmitted
Received
I/O Messaging
4, 8, or 12 bytes
4, 8, or 12 bytes
Explicit Messaging
55 bytes
55 bytes
Received Data Size (RDS) Compared to
received_connection_size Attribute
Received Data
Connection Transmissions
RDS Smaller than
Received_connection_size
Ignored by ASD
ASD Will Transmit Normally
RDS Same as
Received_connection_size
Processed by ASD
ASD Will Transmit Normally
RDS Larger than
Received_connection_size
Ignored by ASD
ASD Will Not Transmit
Summary of Contents for DEV002Z
Page 1: ...Installation and Operation Manual ASD OPTIONAL DEVICENET MODULE ...
Page 2: ......
Page 55: ......
