Programming and Operating Manual (Milling)
6FC5398-4DP10-0BA1, 01/2014
107
;Reading a REAL value, offset 4 (starts at byte 4 of range)
The reading of variables generates a preprocessing stop (internal STOPRE).
Writing of PLC tags is generally limited to a maximum of three tags (elements).
Where PLC tags are to be written in rapid succession, one element will be required per write operation.
If more write operations are to be executed than there are elements available, then block transfer will be required (a
preprocessing stop may need to be triggered).
Example:
$A_DBB[1]=1 $A_DBB[2]=2 $A_DBB[3]=3
STOPRE
Unconditional program jumps
Functionality
NC programs process their blocks in the sequence in which they were arranged when they were written.
The processing sequence can be changed by introducing program jumps.
The jump destination can be a block with a
or with a
. This block must be located within the program.
The unconditional jump instruction requires a separate block.
GOTOF label ;Jump forward (in the direction of the last block of the program)
GOTOB label ;Jump backwards (in the direction of the first block of the program)
Label ;Selected string for the label (jump label) or block number
See the following illustration for an example of unconditional jumps:
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