Ok led – module health, All leds red, Qts-clx-apacs module 4-character display – ProSoft Technology CLX-APACS User Manual
Page 47: Rslogix 5000

QTS-CLX-APACS Page
41
OK LED – Module Health
The OK LED indicates module health. A red LED indicates that module startup
diagnostics have failed or a major module fault has occurred. Green indicates that the
module has passed all power-up diagnostics and is functioning normally.
All LEDs Red
If all three LEDs are solid red and the 4-character display shows something like M#66,
this indicates that a fatal error has occurred. Refer to page 43 for information on clearing
fatal errors. If a fatal error occurs, clear the fatal error, save the file and contact
Technical Support.
QTS-CLX-APACS Module 4-Character Display
The 4-character display shows the firmware in the module, either APACS-MON or
APACS-MAS, followed by the firmware version number, and the Module Name you
entered in the module configuration.
If there is no configuration in the module, the display shows <NoConfig> instead of the
module name.
RSLogix 5000
If there is a problem with the connection to the module, the connections are shown with
yellow triangles in the I/O Configuration tree
The Connection tab for each connection to the QTS-CLX-APACS module displays an
error message if there is a problem with the connection to the module.