May 12, 2024

A small programmable logic controller (PLC) Allen-Bradley Micro870 PLC

Rockwell Automation introduced a new Allen-Bradley Micro870 PLC, a small programmable logic controller (PLC), which is the new flagship product of the Micro800 series and can be used to replace multiple small PLCs. The new compact PLC eliminates the need for large, stand-alone machines.

Recently, Rockwell Automation introduced a new small programmable logic controller (PLC) that can be used by machine designers to optimize the control architecture of large, stand-alone machines or systems. The new Allen-Bradley Micro870 PLC supports small smart applications that require up to 304 I/O points, 280 KB of memory, and 20,000 program instructions.

“In designing an automation project, designers often use multiple types of PLCs,” said Yeow Keng Teh, Rockwell Automation's product manager for small controllers. “This requires inventory management of multiple models of PLCs and maintenance of multiple programs. Now designers can use the Micro870 PLC to flexibly scale controllers according to their application needs. This helps simplify inventory management. This is especially true for designers who design multiple machines."

The Micro870 PLC has a flexible design concept and supports up to three functional plug-ins and eight expansion I/O modules. As a result, designers can easily customize or expand controllers for the unique requirements of each type of machine.

With a memory capacity of 280 KB, this controller supports modular programming and supports the use of user-defined function blocks, helping to reduce design time. In addition, with the memory capacity advantage, the machine manufacturer can also maintain a set of programs for all machine models using the Micro870 PLC.

The controller communicates over EtherNet/IP and includes a variety of embedded communication options, such as USB programming ports, non-isolated serial ports, and Ethernet ports, and supports up to two motion axes.

The new 11th Edition Connected Components Workbench software can be used to complete the programming of the Micro870 PLC in one stop. The software can also be used to configure Allen-Bradley PanelView 800 graphics terminals, PowerFlex AC drives, Kinetix component-level servo drives, electronic overload relays, light curtains, and configurable safety relays. This feature helps engineers save time and costs compared to the traditional practice of using different programming tools for each device in the system.

The 11th edition adds a conversion tool that allows MicroLogix customers to easily upgrade to the Micro800 controller family. In addition, the 11th edition also provides graphical configuration files that allow Encompass members of the Partner Alliance Program to easily configure complementary third-party products. These configuration files support both Micro800 functional plug-ins and extended I/O, which helps to complete the configuration work faster and more accurately.

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