This training module on programming programmable logic controllers (PLC) is part of the memory structure and programming unit used in a packaging systems equipment control course. In the course, students assemble, install, maintain, and repair industrial machinery used in industry. The module contains description, objectives, content outline, methodology, activities, five resources (equipment, supplies, and printed materials), and evaluation--written test and program creation. The content outline indicates the following units: functions of PLCs, programming documentation, and developing application programs. The following materials are included with this module: pretest for programming a PLC; posttest for part 1 of programming a PLC; instructor evaluation of program development; Programmable Controller (PC) ladder logic diagram; PC instruction summary; instructions on writing the user program; and other diagrams and overhead transparencies used as teaching aids. (NLA)