The retention behavior of the CPU 312C determines whether or not the values of internal memory bits are retained after a power failure or memory reset on the CPU 312C.
You can use the retention behavior to ensure that the motor does not start up in an uncontrolled manner after a power failure.
Setting the parameters of the CPU 312C
You can set numerous parameters for each of the modules. As an example, we will modify the retention behavior of the CPU 312C.
1. Set the amount of retentive bit memory to “0”.
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