Manufacturer: Rockwell Automation
Brand: Alan Bradley
Part Number/Catalog number: Model 1756-L55M16
Series: ControlLogix
Module type: Processor module
The Allen-Bradley 1756-L55M16 is a ControlLogix controller that is part of the Logix5000 family of controllers. It has 7.5 MB of data and logic memory and 208 KB of I/O memory. It has a Logix and a backplane CPU for allocating resources between them. Application code and messages are executed by the Logix CPU, from which the backplane CPU sends and receives data and communicates with I/O.
The 1756-L55M16 controller is connected to a workstation or other controller via a serial port. The 1756-CP3 serial cable is used to connect the controller to the workstation. In order to communicate with other devices, it uses various networks such as Ethernet /IP, ControlNet, DeviceNet, etc. The 1756-L55M16 can broadcast and receive system share tags over EtherNet/IP or ControlNet networks. Both producers and consumers need a connection.
The 1756-L55M16 controller has multi-tasking capabilities to allocate processing time to different operations in the application. It also contains programs for grouping data and logic. It provides routines for encapsulating executable code in a programming language. It supports both online and offline Logix5000 programming language. If any I/O communication failure occurs, it has a blinking green I/O LED. The 1756-L55M16 also contains a fault handler for diagnosis. It supports 1756-BA1 or 1756-BATM batteries that require regular maintenance.
