Rockwell Automation 1732DS-IB8 User Manual page 102

98 Interpret the LED Indicators
MS/NS Indicators
State Status
Normal Operation
MS
Solid Green
NS
Online/Connected
Solid Green
Standby
MS
Flashing Green
NS
Online/Connected
Solid Green
Standby
MS
Flashing Green
Not Online Or Not
NS
Powered
Off
Standby
MS
Flashing Green
Online/Not
NS
Connected
Flashing Green
Initialization Status
MS
Flashing
Green/Red
Not Online or Not
NS
Powered
Off
Fatal Fault
MS
Solid Red)
Not Online or Not
NS
Powered
Off
Minor Fault
MS
Flashing Red
Not Online or Not
NS
Powered
Off
Standby
MS
Flashing Green
NS
Fatal Link Fault
Solid Red
Standby
MS
Flashing Green
NS
Fatal Link Fault
Solid Red
Standby
MS
Flashing Green
NS
Minor Communi-
Flashing Red
cations Fault
: Lit : Flashing
Publication 1791DS-UM001H-EN-P - April 2009
Description
Safety I/O communication in
progress.
Standard I/O communication
or message communication in
progress.
Waiting for completion of
node address duplication
check at the master.
Waiting for safety or standard
connection.
Module performing
initialization process or
waiting for configuration.
Watchdog timer error.
Switch settings are incorrect. Check the switch settings and restart the module.
Node address duplication.
Bus Off status
(communication stopped due
to consecutive data errors).
Communication timeout.
: Not lit
Recommended Action
None - normal status - safety I/O communication and standard
I/O communication are being performed.
None - normal status - standard I/O communication and/or
message communication are being performed.
If this indicator status occurred for only specific module
terminals, check that the module communication rate settings
are correct and restart the module.
None - wait for connection to complete.
None - wait for process or configuration to complete.
Replace the module.
Reset the module so that it has a unique node address, and
then restart the module.
Check the following items and restart the module.
Do master and module communication rates match?
Are lengths of cables (trunk and branch lines) correct?
Are cables broken or loose?
Are terminating resistors connected to both ends of the trunk
line only?
Is noise interference excessive?
Check the following items and restart the module.
Do master and module communication rates match?
Are lengths of cables (trunk and branch lines) correct?
Are cables broken or loose?
Are terminating resistors connected to both ends of the trunk
line only?
Is noise interference excessive?
Is the network grounded properly ?