Technical data

Technology functions
CPU 317T: Technology Functions
A5E00251798-03
6-253
6.7 Information about parameters
6.7.1 Reaction of the technology function after POWER OFF and
restart
The technology function is reinitialized after POWER OFF (POWER OFF ->
POWER ON) and restart (RUN-STOP -> STOP-RUN).
Note
If the value Execute=TRUE is set at the input parameter after POWER OFF or
restart, a signal edge is detected, and the command is started.
In order to prevent an unwanted start of the command, set the "non-retain" check
box at the block properties in SIMATIC Manager. The relevant block is initialized
again after POWER On or restart if "non-retain" is set.
6.7.2 DoneFlag generation
The DoneFlag can be used to indicate and evaluate the completion of technology
object commands in the local MCDevice DB.
At the input parameter DoneFlag of the technology function, you define which
DoneFlag or which DoneFlag in the MCDevice DB is to be generated.
Parameter value Meaning
0
DoneFlag is not generated in the MCDevice DB
1
DoneFlag[1] is generated in the MCDevice DB
...
32
DoneFlag[32] is generated in the MCDevice DB
Each time the technology function completes a task, the value in DoneFlag is
inverted in the MCDevice DB (FALSE is set TRUE or TRUE is set FALSE.) The
DoneFlag is only set as long as the initiated command can be tracked. The
command can no longer be tracked if a subsequent command uses the same
instance.