Rockwell Automation 1756-DHRIO ControlLogix Data Highway Plus-Remote I/O Communication Interface Module I.I. - Manual (Page 17)

ControlLogix Data Highway Plus-Remote I/O Communication Interface Module 17
Publication 1756-IN003D-EN-P - July 2008
Interpret the Status Indicators
The three status indicators on the module provide information about your
module and the status of each channel. The following tables outline the
indicator condition and the corresponding status, and explain what each
condition means.
If the Module OK
indicator is Module Status Recommended Action
Off Not operating. 1.Apply chassis power.
2.Verify module is completely
inserted into chassis and
backplane.
Green flashing Operating but not
routing messages and
no controller
transferring I/O. None, if no messages are actively
being routed through the module and
no controller transferring I/O.
To route messages or transfer I/O, use
module default configuration or
configure module.
Red, then Off Performing self-test. None, normal operation.
Green Operating and routing
messages. None, normal operation.
Red In major fault Reboot module. If red reoccurs, then
replace module.
Red flashing In major fault or
configuration fault. Check alphanumeric indicator and
take action described in alphanumeric
display message table on page 15.