The ControlLogix Chassis is the physical device in which the I/O Modules, Communication Modules, and Power supply are placed into.  The chassis is available in five different sizes:  4-slot, 7-slot, 10-slot, 13-slot, and 17-slot.  You may have other types of chassis in your system besides ControlLogix, such as Flex, SLC, and PLC chassis.  The ControlLogix…

The processor is the main part of your ControlLogix system. The processor is where the program is stored that reads the status of your equipment, and based on certain status, makes a decision on what to control.

The power supply supplies power to the modules on the backplane. Generally power from field devices DOES NOT come from the power supply. The power supply only provides control power to modules on the backplane. Power for field devices come from a separate source which is connected to the output module. The power supply merely…

The purpose of the discrete output module is to control field devices. Discreet (digital) output devices only have two states:  On or Off The discrete output module requires power from an external source. When a 1 is placed into the output tag of the ControlLogix (in run mode), a status light is energized on the…

The purpose of the discrete input module is to read the status of field devices which have just two states:  On or off. When a voltage is detected on the terminal of an input module with respect to common, the corresponding status light is energized, and during the processor scan, the value of 1 is…