Rockwell Automation 193-EDN E1Plus Overload Relays - DeviceNet Module - Manual (Page 16)

Publication 193-UM006A-EN-P – October 2005
2-6 Protection Functions
When the Comm Fault warning conditions are satisfied, the following will
occur:
• The Network Status LED will blink red or become solid red
• Bit 5 in Parameter 4, Warning Status, will go to “1”
• Bit 1 of Parameter 10, Device Status, will go to “1”
Communication Idle
Protection When a programmable controller is placed into the program mode, the
execution of its ladder program is suspended, and any connected networks go
to an idle state. If inadvertent, this can result in the loss of application control
and/or critical process diagnostic data. Rapid communication idle detection
helps minimize the potential damage due to uncontrolled or unmonitored
applications.
Comm Idle Warning
The DeviceNet Module will indicate a Comm Idle warning if:
• No warning currently exists
• Comm Idle Warning is enabled
• The network controller that is communicating to the DeviceNet Module
is placed in idle mode
When the Comm Idle warning conditions are satisfied, the following will
occur:
• Bit 6 in Parameter 4, Warning Status, will go to “1”
• Bit 1 in Parameter 10, Device Status, will go to “1”
IMPORTANT
The Comm Fault State of OUT A is defined by Parameter
36 (OUTA Dn FltState) and parameter 37 (OUTA Dn
FltValue).
IMPORTANT
The Comm Idle State of OUT A is defined by Parameter
38 (OUTA Dn IdlState) and parameter 39 (OUTA Dn
IdlValue).