![]() ![]() “Low” signal: temperature is still allowed.“High” signal: temperature exceeded the limit.Finally these signals are important if an action in the machine happens or not.Įxample for different signals at the output to a motor:Įxample for different signals at the input coming from a thermometer in the machine: ![]() These are different electrical definitions. As the case may be the inputs and outputs are set on a “High” signal or on a “Low” signal by the program. That makes a communication between the Simatic and any machine possible. Both are connected by electrical wires with the machine. The running program on the Simatic controls these inputs and outputs. The Simatic also has some inputs and outputs. Simatic is similar to a digital computer which can store and run programs. ![]()
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