1764-LRP | Allen-Bradley | manufactured MicroLogix 1500 controller

The Allen-Bradley 1764-LRP is an MicroLogix 1500 Processor. It is a component of MicroLogix 1500 Programmable Controllers that offers a large-memory solution to a variety of applications. It provides 14K words of user-configurable memory for data and programs. It comes with a program execution time of approximately 1 millisecond for a 1K-word program (including bit, counter, timer, and math instructions). In a controller system, the 1764-LRP Processor Unit provides the trim potentiometers, a Run/Remote/Program mode switch, a communication toggle push button, and logic processing. It serves as an interface to the real-time clock, the DAT, and the memory modules. This processor uses a controller assembly to support a maximum of eight I/O modules in an additional I/O bank. For programming, this processor uses the RSLogix 500 programming software.

The 1764-LRP Processor comes with an additional communications port, DTE (male) 9-pin D-shell connector with a 30 Volt DC isolation. This RS-232 port is electrically isolated and used for peer-to-peer and SCADA/RTU networks, DeviceNet, EtherNet/IP, and the DH-485 ports. It can be separately configured (Channel 1) for any supported communication protocol. Because the 1764-LRP is an enhanced version of the standard processing unit, an isolator is not required when connecting a MicroLogix controller system that is using the 1764-LRP to a computer. This module requires a backup battery once its battery indicator light turns on, as the original battery will only last for at least 7 days.

The Allen-Bradley manufactured 1764-LRP is a MicroLogix 1500 Controller that is primarily intended for use in small, low level applications. This controller directly attached to any MicroLogix 1500 base units such as 1764-24AWA, 1764-24BWA and 1764-28BXB. It is provided with a dual RS232 port which is individually configured. The MicroLogix 1500 product family including the 1764-LRP’s base unit is designed for DIN Rail mounting. It also supports installation of local expansion modules and remote installation using I/O banks of communication through a DeviceNet communication module particularly 1764-SDN. With the use of this module, the controller is capable of communicating up to 63 slave devices.

The 1764-LRP integrated memory is partitioned for 10 KB User Program and 4 KB User Data. It has a rated processing speed is up to 1 ms per 1K of user program. With the provide integrated memory, the controller is capable of handling up to 512 I/O, including expansion modules.