1775-L4
Allen Bradley PLC-3 Processor Module

The Allen Bradley 1775-L3 is a single slot processor module for the now obsolete PLC-3/10 controller. The CPU was responsible for controlling the program execution and memory management functions.  A lithium battery was used to backup the program memory which was prone to failure over time. At Northern Industrial , we recommend that existing users check the status of the battery at least once a year and backup their program during this period.

One key feature of the AB 1775-L3 was its ability to handle over 70 programming instruction.  This enabled efficient programming and  made the PLC-3/10 one of the most powerful processors.   On board diagnostic and diagnostic indicators enable easy trouble shooting if the worst happens. If you are having problems we are able to offer telephone and on-site support for this product.  High speed program scan means that only the parts of the control program that are required are processed. 

Allen Bradley 1775-L3 Key Features

• Over 70 programming instructions
• High Speed Program Scan
• Timed interrupt routine
• Programmable fault response
• Integer math
• Floating point math
• Real time clock and calendar
• Program Control Instructions (JMP, JSR, MCR)