Simatic 505 SoftShop
5
••••
67
Accessing PLC Configuration
1.
Select PLC Configuration from the PLC Utilities menu.
Result: The PLC Configuration dialog box appears (Figure 5.2).
Figure 5.2
2.
Enter the appropriate ranges for the selected PLC memory type.
NOTE
The processor type must be selected before configuration.
The various memory types are described in the pages that follow.
Memory types are classified for RLL programming purposes in the
following ways:
•
Writeable - This memory type is read/write. It can be
used for both input and output fields of RLL
instructions.
•
Readable - This memory type is read only. It can be
used only for the input fields of RLL instructions.
•
No access - RLL instructions has no access to this
memory.
3.
Click Accept to save your settings and return to the active logic
program.
Controller Memory Types
Ladder Memory
A block of memory within the controller is reserved for the RLL
program. This memory type is called Ladder Memory (L-Memory). Each