Reading the Programme Status Access Symbols
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2
2.3 Symbols Accessing the Data of the Previous Block
The same data can be accessed in the previous block as in the current block (see 2.2).
The same symbols are used, but are preceded by two decimal points (instead of one).
The symbols can be:
- symbols addressing Boolean values, or
- symbols addressing numerical values.
The symbols are used to read the modal data of the previous block.
These data are those of the last executable previous block (or possibly the last block
executed).
This addressing is used only when execution of the current block is suspended by
programming function G999.
General Syntax
Variable = [
••
symbol(i)]
Variable L programme variable, symbolic variable [symb], E
parameter.
[
••
symbol(i)] Symbol between square brackets, preceded by two
decimal points, possibly followed by an index (i).
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