Memory Cassette Functions - Omron CP1L CPU UNIT - 03-2009 Operation Manual

Memory Cassette Functions

Note
PLC Setup
1,2,3...
!Caution The CP1L CPU Units automatically back up the user program and parameter
6-6 Memory Cassette Functions
6-6-1 Overview
Memory Cassette
Specifications
396
b. Select the Data Memory Option in the Backup to Flash Memory Area
and click the Backup Button.
The DM data will be written to the built-in flash memory.
The DM data that is saved and written at startup is the entire DM Area (D0 to
D32767).
1. Set Do not detect Low Battery (run without battery) to Do not detect.
2. Set IOM Hold Bit Status at Startup and Forced Status Hold Bit Status at
Startup to Clear (OFF).
3. Set Read DM from flash memory to Read. (Only when DM initial values
have been saved as described above.)
data to flash memory when these are written to the CPU Unit. Also, the CX-
Programmer can be used to save all of the data in the DM Area to the flash
memory for use as initial values when the power supply is turned ON. Neither
of these functions saves the I/O memory data (including HR Area data,
counter PVs and Completion Flags, and DM Area data other than initial val-
ues). The HR Area data, counter PVs and Completion Flags, and DM Area
data other than initial values are held during power interruptions with a bat-
tery. If there is a battery error, the contents of these areas may not be accu-
rate after a power interruption. If HR Area data, counter PVs and Completion
Flags, and DM Area data other than initial values are used to control external
outputs, prevent inappropriate outputs from being made whenever the Battery
Error Flag (A402.04) is ON.
CP1L CPU Units have Memory Cassette functions that enable data in the
CPU Unit to be stored on and read from a special CP1W-ME05M Memory
Cassette. These functions can be used for the following applications.
• Copying data to other CPU Units to produce duplicate devices.
• Backing up data in case the CPU Unit needs to be replaced due to any
malfunction.
• Writing and updating data when existing device versions are upgraded.
Use the following Memory Cassette.
Model
CP1W-ME05M • Memory size
• Storage capacity The following CPU Unit data (for each Unit)
• Write method
• Read method
Specifications
512 Kwords
• User programs
• Parameters
• Comment memory
• Function Block (FB) sources
• DM initial values in the built-in flash memory
• DM in RAM
Operations from the CX-Programmer
Powering up with DIP switch pin SW2 set to
ON, or operations from the CX-Programmer
Section 6-6