Corresponding LED indicators, visible through the
module faceplate, turn off when the module detects
errors and function as troublshooting aids.
The module comes from the factory configured for installation in all intermediate I/O racks in the daisy chain;
however, the user is instructed to reconfigure this
module to ensure proper termination of the I/O Bus if the
module is to be installed at the end of the I/O station daisy
chain. (Refer to NOTE on this page,)