Example: Principle of separated control and safety systems

Published 2013-02-10 | Author: Erno Pentzin

Adapted from the figure in the book by Gruhn and Cheddie (2006).

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Principle of separated control and safety systems

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% Principle of separated control and safety systems.
% Author: Erno Pentzin (2013)
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations.markings}
\begin{document}

\begin{tikzpicture}[
	decoration={
		markings,
		mark=at position 1cm with {\arrow[black]{stealth}},
	},
	path/.style={
		->,
		>=stealth,
		postaction=decorate
	},
	every node/.style={font=\sffamily}
]

% Boxes
\node [
	draw,
	yshift=2cm,
	minimum width=4cm,
] (control) {Control System};
\node [
	draw,
	minimum width=5cm,
	minimum height=1cm,
] (process) {Process/Equipment};
\node [
	draw,
	yshift=-2cm,
	minimum width=4cm,
] (safety) {Safety System};

% Connecting Arrows
\draw[path] (control.east) -- ++(1,0) |- ([yshift=-0.25cm] process.north east);
\draw[path] ([yshift=-0.25cm] process.north west) -- ++(-1,0) |- (control.west);
\draw[path] ([yshift=0.25cm] process.south west) -- ++(-1,0) |- (safety.west);
\draw[path] (safety.east) -- ++(1,0) |- ([yshift=0.25cm] process.south east);

\end{tikzpicture}

\end{document}

Comments

  • #1 a o , October 19, 2013 at 10:21 p.m.

    Good example.

    How to replace the arrows for plain lines?

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