Maintenance
Section
7-2
200
6. If necessary, use CX-Process Tool to compare all function block files to
check whether or not the download has been executed successfully.
7. Check the Loop Control Unit again for any malfunction.
8. Use CX-Process Monitor to set the parameters.
When the same function block file (appended with the .ist extender) as
the function block data on the Loop Control Unit is not set aside
Note
The same function block file (appended with the ist. extender) as the function
block data on the Loop Control Unit is needed to read the function block data
on the Loop Control Unit. If the same function block file (appended with the
ist. extender) has not been set aside, the following restrictions apply to that
data when the function block data on the Loop Control Unit is simply read.
Otherwise, these restrictions do not apply to ITEM data.
The function blocks that are read will be connected automatically using the
shortest connections possible. If the connections between the original
function blocks were more indirect, then the connections between the
resulting file blocks may be different. (The actual connection information used
in execution, however, will be the same.)
Annotation data is not read.
Output comments in ladder diagrams are not read.
Regardless of the above restrictions, follow the procedure below to replace
the Loop Control Unit when the function block data on the Loop Control Unit
to be replaced is uploaded and downloaded to the new Loop Control Unit.
1, 2, 3…
1.
Turn power OFF to the PC.
2. Establish the connection between CX-Process Tool and the CPU Unit.
3. Turn power ON to the PC.
4. Upload the function block data from the Loop Control Unit.
5. Turn power OFF to the PC.
6. Replace the Loop Control Unit.
7. Turn power ON to the PC.
8. Wire the function blocks in CX-Process Tool as necessary based on the
function block file (appended with the .ist extender) that was uploaded
from the Loop Control Unit.
9. Download the function block file to the Loop Control Unit.
10. If necessary, use CX-Process Tool to compare all function block files to
check whether or not the download has been executed successfully.
11. Save the function block file whose function blocks have been wired in the
software on the hard disk or other storage medium.
12. Check the Loop Control Unit again for any malfunction.
7-2-2
Using the flash memory
The flash memory can be used in the following two ways:
For battery-free operation