ISO 5784-3:1989

Fluid power systems and components — Fluid logic circuits — Part 3: Symbols for logic sequencers and related functions

This part defines graphical symbols for sequencers and gives some rules concerning their use in circuit diagrams. Symbols given in this part shall be used for all documents and circuit diagrams concerning sequencers for data processing. Specifies two types of symbols for sequence function modules: type “input/output” (see annex A), and type “step/return” (see annex B).