Siemens SINAMICS G120 CU230P-2 HVAC Operating Instructions Manual page 280

Functions
7.9 Application-specific functions
Example: AND operation
An example of an AND logic operation, explained in detail, including the use of a time block
is provided in the Extended scope for adaptation (Page 16)chapter.
You can find additional information in the following manuals:
● Function Manual "Free Function Blocks"
● Function Manual "Description of the Standard DCC Blocks"
278
(http://support.automation.siemens.com/WW/view/en/35125827)
(http://support.automation.siemens.com/WW/view/en/29193002)
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD