Omron CJ1W-NC271 - 12-2009, Operation Manual

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Procedure for Replacing a PCU
Section 13-4
8. Transfer the saved parameters and operating data to the CPU Unit's DM
Area using, for example, CX-Programmer, and then transfer them to the
PCU using the WRITE DATA Bit. After transferring, save the parameters
and operating data to the flash memory. When the PCU's parameter data
has been saved to the Memory Card using the CPU Unit's simple backup
function or the PCU's backup function, execute the command to restore
(read) the data from the Memory Card. Save the backed up parameters to
the PCU's flash memory by reading them from the Memory Card.
9. Turn OFF the power supply to the CPU Unit, and then turn it ON again.
For details on transferring PCU data to the Memory Card installed in the CPU
Unit, refer to the next section
13-4-2 Memory Card Backup .
Note The above procedure is used when replacing the PCU, and transferring only
the parameters saved in the PCU. This procedure is not used to transfer
Servo Parameters saved in the Servo Drive.
When replacing the Servo Drive, use the PCU's READ SERVO PARAMETER
Bit to read the parameters saved in the Servo Drive to be replaced to the CPU
Unit's DM Area first. Then save the DM Area data to a floppy disk or hard disk
using, for example, CX-Programmer. After replacing the Servo Drive, transfer
the saved Servo Parameters to the CPU Unit's DM Area using, for example,
CX-Programmer, and then write them to the Servo Drive's non-volatile mem-
ory using the PCU's SAVE SERVO PARAMETER Bit.
13-4-2 Memory Card Backup
The following data can be saved to the PCU's internal flash memory.
• Common Parameters
• Axis Parameters
The PCU can save this data to the Memory Card installed in the CPU Unit by
using the CPU Unit's simple backup function or the PCU's backup function.
The data saved to the Memory Card can also be read to the PCU's flash
memory.
Note Do not read out data backed up to a Memory Card installed in the CPU Unit
from a Position Control Unit with unit version 1.0 to a Position Control Unit
with unit version 1.1 or later (for both the simple backup function and the
PCU’s backup function). If Position Control Unit Ver. 1.0 backup data is
restored for Position Control Unit Ver. 1.1 or later, the linear interpolation func-
tion will be disabled. To transfer setting data from Position Control Unit Ver.
1.0 to Position Control Unit Ver. 1.1 or later, use the parameter transfer func-
tion using the data transfer bits (WRITE DATA, READ DATA, and SAVE DATA)
in the Common Operating Memory Area.
CPU Unit's Simple
Backup Function
CS/CJ-series CPU Units have a simple backup function that enables all the
setup data in the CPU Unit for every Unit to be backed up (written) to the
Memory Card that is installed in the CPU Unit or restored (read) from the
Memory Card at the same time by simply operating a switch on the front of the
CPU Unit.
When replacing the PCU, the time required to reset each Unit can be short-
ened by reading the backup file.
The CJ1W-NC
@
71/CS1W-NC
@
71 PCUs described in this manual support
the CS/CJ-series CPU Unit simple backup function.
Note The simple backup function can be used to back up the PCU’s Common
Parameters and Axis Parameters. The Servo Parameters for each Servo
Drive connected to the PCU will not be saved to the Memory Card.