Allen Bradley 1769-L20 CompactLogix Processor Module
The Allen-Bradley 1769-L20 is a CompactLogix Controller. It can support up to 8 modules in a maximum of 2 I/O banks with 1 expansion cable allowed and it has 1 RS-232 port available. LED indicators let the users monitor the controller status, the channel 0 RS-232 port status, and the channel 1 RS-232 port status. The channel 0 serial port has been set up for DH-485 communications. This controller also comes with a 64 KB user memory which is allotted