Programming the FM 351
6-4
FM 351 Positioning Module
C79000-G7076-C351-02
6.2 FC ABS_INIT (FC0)
Task
FC ABS_INIT deletes the following data in the channel DB:
• The control signals
• The return signals
• The trigger, done, and error bits of the jobs
• The function switches and their done and error bits
• Job management for FC ABS_CTRL
Call
The function must be run through for each channel following a startup (power
supply on) of the module or CPU. You should therefore call it, for example in the
startup OB (OB100) and the remove/insert OB (OB83) or 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.
Data Block Used
Channel DB:
The module address must be entered in the channel DB.
Call Parameters
Name Data Type P Type Meaning
DB_NO INT IN Channel DB number.
Return Values
This function does not return a value.
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