Replacing Loop-Control Cpu Units - Omron SYSMAC CS Series Operation Manual

Maintenance
7-2-3

Replacing Loop-control CPU Units

STEP 1: Backing Up
the Program
Connecting the CPU Unit
Backing Up the Program,
PLC Setup, and I/O Tables
from the CPU Unit
1,2,3...
Backing Up the Function
Blocks from the Loop
Controller
1,2,3...
Note The initialization switch is invalid while the EXEC indicator is flash-
ing after the power is turned ON (clearing flash memory or backing
up function block data to flash memory). Press the initialization
switch again after the RDY indicator lights. Approximately 10 sec-
onds is required after the power is turned ON to clear flash memory.
3. When the initialization switch is pressed, the Duplex Unit's DPL STATUS
and CPU STATUS indicators will flash green and the function block data
will be transferred from the Process-control CPU Unit that had been oper-
ating to the Process-control CPU Unit that was replaced.
At up to 2.5 minutes later, the Duplex Unit's DPL STATUS and CPU STA-
TUS indicators will change from flashing green to being lit. The function
block data transfer has been completed and operation in duplex mode is
started again. (The Process-control CPU Unit that was operating will be
active and the Process-control CPU Unit that was replaced will be on
standby.)
Perform the following procedure if automatic restoration to duplex
operation is set in the PLC Setup.
Switch the CPU USE/NO USE switch to "USE" to transfer the function block
data from the Process-control CPU Unit that was operating to the Process-
control CPU Unit that was replaced. Duplex mode will be restored up to 2.5
minutes later. (Process-control CPU Unit that was operating will be active and
the Process-control CPU Unit that was replaced will be on standby.)
Use the following procedure to replace a Loop-control CPU Unit.
Connect the cable to the CPU Unit.
1. Start the CX-Programmer.
2. Create a new project or open an existing project.
3. Go online to the CPU Unit.
4. Select PLC - Transfer - From PLC.
5. Select all of the transfer options.
6. Click the OK Button.
7. Save the project.
1. Start the CX-Process Tool.
2. Create a new project or open an existing project.
3. If a new project is created, set the node.
4. Upload the function block data as new data from the Loop Controller.
5. Click the Option Button. Select the option to restore tag data from compact
flash memory and then click the OK Button.
6. Click the Start Button.
Section 7-2
241