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The 1769-L20 is a CompactLogix controller that is ideal for small to medium control system requirements without motion and embedded safety functionality. This controller has an integrated RS232 communication port that support DF1 protocol. It has 64Kbytes user memory.
The 1769-L20 supports installation of up to Eight (8) CompactLogix modules in the local chassis with expansion option of up to Two (2) I/O banks. The controller has LED indicators installed at the front panel to report the status of the controller, communication and compact I/O module status and diagnostics. It uses a battery packed that is shipped with the controller on a separate package.
The 1769-L20 can also be used for communications over DH485, DeviceNet and Ethernet through Peer to Peer messaging. The integrated RS232 port can be configured as RTU in Full and Half duplex mode. The same RS232 port may be also used for upload and download operation, DH-485 network interfacing and ASCII communication.
The 1769-L20 is installed on a DIN rail or mounting panel. Maintain 2 inches or 50 mm clearance on all sides of the controller for proper air ventilation and sufficient electrical isolation.
Use RSLogix5000 to create and download user program for this processor. Data files are accessible through the software via drag and drop or data file selection. The controller support tag-based and alias addressing.
Controller faults are easily identifiable via the LED indicators. Status indicator include RUN, FORCE, BAT, OK, I/O, DHC0, Channel 0. Each of these independently lit to indicate controller state.
VIIIVThe 1769-L20 is a CompactLogix controller from the 1769 CompactLogix family. This controller is ideal for use in small to medium control requirements with 64Kbytes memory and integrated RS232 communication port.