Siemens SIMATIC FM 452, Руководство пользователя

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Programming the FM 452
6-4
FM 452 Electronic Cam Controller
C79000-G7076-C452-04
6.2 FC CAM_INIT (FC 0)
Task
FC CAM_INIT initializes the following data in the channel DB:
•
The control signals
•
The return signals
•
The trigger, done, error bits of the jobs
•
The function switches and their done and error bits
•
The job management and the internal buffers for FC CAM_CTRL and FC
CAM_MSRM
Call
The function must be run through following a startup (power supply on) on the
module or CPU. You should therefore install it, for example in the warm restart OB
(OB100) and the remove/insert OB (OB83) or call it in the initialization phase of
your user program. This ensures that your user program does not access old data
following a CPU restart or a module startup.
Call Parameters
Name Data Type I/O Meaning
DB_NO
INT I Number of the Channel DB
Return values
This function does not return a value.