Omron CS1W-HCA12-V1, Operation Manual

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176
Back Up Function
Section 7-13
(Refer to Back Up of Unit Memory by Bit Manipulation on page 176 for
details.)
Conditions for Executing
Back Up/Restore Condition for Executing Back Up
Data cannot be backed up in the memory card of CPU unit in the following
case:
• When a ladder library with a "ladder library ID" is already saved in the
Flash memory, and if the "ladder library ID" does not match with the value
set in the unit set up area (DM 6625).
Conditions for Executing Restore
Data cannot be restored from the memory card of CPU unit to the counter unit
in the following cases:
• When a ladder library is already saved in the Flash memory, and if the
back up data in the memory card of CPU unit does not contain the ladder
library.
Note: In this case, erase the ladder library first and then execute restore
again. Refer to
Erasing a Ladder Library on page 171 for details.
• When the unit No. at back up does not match with the one at restore.
• When the unit model has changed since the last back up.
7-13-3 Back Up of Unit Memory by Bit Manipulation
The following data in the Flash memory of a counter unit can be backed up
(written) in the memory card, or restored (read) from the memory card
through bit manipulation (back up data write/read instruction: word n in CPU
unit bit 06/07).
• User program in the Flash memory
• DM area only for general-purpose READ
• Unit setup area (DM 6600 to 6655)
• Information related to extended special instructions
• Information related to a ladder library
The files are stored under the file name shown below:
File name: UNIT**.PRM
( Note: ** indicates the unit No. address of the unit = unit No. + 20 Hex)
This function can be executed regardless of CPU unit models (even with CS1
CPU units). Using the function realizes the unit's memory back up operation
from the ladder program on the CPU unit.