Siemens SIMATIC S7-300 Getting Started page 43

Getting started for first time users

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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".

SIMATIC S7-300 Getting Started for First Time Users

Getting Started, 04/2007, 6ZB5310-0NC02-0BA0

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