1756-L71 Allen Bradley ControlLogix 5570

The Allen-Bradley 1756-L71 ControlLogix controller belongs to Series A of the programmable automation controllers

Manufactured by Allen-Bradley/Rockwell Automation, this controller comes with 2 MB of user storage memory and 0. 98 MEGABYTES of I/O memory. It features an onboard 4- character alphanumeric display to enable easy monitoring from the run-time information as well as the control diagnostics. The 1756-L71 features an open enclosure type and one USB port with full speed. The 1756-L71 control mechanism supports controller redundancy if it is paired up with a similar control in the same ControlNet network.

The 1756-L71 controller is installed in ControlLogix chassis such as the 1756-A10K, 1756-A4K, 1756-A4, 1756-A7K, 1756-A7, 1756-A17, 1756-A10, 1756-A13, 1756-A17K, and the 1756-A13K chassis. The Allen-Bradley 1756-L71 ControlLogix control mechanism comes with a non-compulsory non-volatile memory space, an SD card of 1 1 GB called the 1784-SD1, and this can be upgraded to 2 GB using the 1784-SD2 Sdcard. It is essential that the Sdcard remain installed in the 1756-L71 controller because that is where the diagnostic data is usually saved, and this is the info that Rockwell Automation uses when troubleshooting an issue with the controller.

It is best to use Rockwell Software SD cards since there are many other SD cards which have not been tested for compatibility with the control. In fact, the use of additional SECURE DIGITAL cards may result in info corruption. The Allen-Bradley 1756-L71 controller ships with 3 different capacitor modules intended for energy storage, 2 are removable and the non-removable 1756-ESMNRM/1756-ESMNRMK module is used to secure the control mechanism through the prevention of USB connections.

Technical Specifications for 1756-L71