User Manual

9 Data integrity in the event of a voltage failure

9.3 Storage of retain/persistent variables of the PLC

Lenze · Controller | Parameter setting & programming · Reference Manual · DMS 1.5 EN · 04/2014 · TD17

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9.3 Storage of retain/persistent variables of the PLC

For the storage of retain/persistent variables, a defined storage capacity is available:

 Tip!

You can create retain variables in the »PLC Designer« by marking the variables with the

keyword RETAIN.

Further information on how to create retain variables in the »PLC Designer« can be found here:

Creating remanent variables (retain/persistent)

( 64)

Controller Storage capacity

3221 C

3231 C

60 kB

3241 C 1 MB (with external battery pack/capacitor pack)

c300 128 kB

p300 128 kB

p500 1 MB