The Allen-Bradley 1785L20B is a processor module for the PLC-5 system, designed to handle complex industrial control tasks. This module supports the PLC-5/20 architecture and includes firmware revision B, ensuring reliable performance in demanding environments.
Originally known as Ser E, it was updated to Ser D, enhancing its capabilities further. Suitable for both new installations and upgrades, this processor is essential for maintaining robust industrial automation systems.