DirectLOGIC 305 ASCII/BASIC Module Manual

This document details the ASCII/BASIC modules for DirectLOGIC 305 PLCs, which interface with serial devices like barcode readers and operator terminals, offering three communication ports and options for built-in telephone or radio modems. It covers features such as 128K non-volatile memory, a 16MHz processor, floating-point math, and Modbus support, along with specifications for the F3-AB128, F3-AB128-T (telephone modem), and F3-AB128-R (leased-line/radio modem) variants.