Omron Sysmac WS02-CXPC1-EV3, Operation Manual

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PART 1: CX-Programmer
CHAPTER 4 – Reference OMRON
CX-Programmer _Page 58
Use the following procedure to apply automatic allocation.
1, 2, 3… 1. Select (tick) the Enable automatic allocation for this PLC option.
A list of memory ranges may be entered for the PLC. The list is ordered, so that the first
area in the list is allocated first.
2. Use the Add. .. button to add an area to the allocation list. A dialog is shown to input the
details for the area:
3. Type in the Start address and Size (channels) to define the address range in the PLC for
CX-Programmer to allocate from.
4. Choose one or more data types which are to be allocated in this area. By default, all
applicable data types will be allocated from within this area. A restriction can be made,
so that for example, a separate memory area can be set to allocate BOOLs and
CHANNELs.
5. Use the Remove button to remove the selected allocation range from the list.
6. Use the Move Up and Move Down buttons to move a selected range up and down in the
priority order for the PLC.
Allocation of Symbols
Symbols can be defined to use automatic allocation simply by leaving their addresses blank. CX-Programmer
then allocates the symbol address during compilation. The actual address allocated is shown against the symbol,
but the address is marked as ‘Auto’ to show that the address has not been assigned by the user.
CX-Programmer allocates addresses within PLCs by trying to find space in the PLCs allocation areas (set as
above). The areas are searched in order, and addresses are only allocated within a particular range if its data type
is allowed within the range.
If automatic allocation is changed for a PLC (an allocation area is changed, or an area is removed), then all
automatically-allocated addresses for the PLC are reallocated.
If automatic allocation is removed for the PLC (i.e. the Enable automatic allocation for this PLC option is
removed), then any symbols which have been auto-allocated have their address removed.
Adding and editing Automatic Allocation areas
Selecting the Edit or Add button on the Automatic Allocation dialog opens the Memory Range dialog. This
dialog is used to either edit an existing auto allocation area or add a new one.