XW2Z-200J-B9 Omron, XW2Z-200J-B9 Datasheet - Page 219

• Manufacturer Part Number: XW2Z-200J-B9
• Description: CONNECTOR CABLE 2M
• Manufacturer: Omron

Specifications of XW2Z-200J-B9

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: XW2Z200JB9

Automatic DM Data Backup Function
CPU Bus Unit
Initialization
6-4
Automatic Storage of
DM Data to Flash
Memory
Retained Area
Related Auxiliary Area
Flags
192
Automatic DM Data Backup Function
Note
These 100 words are generally used to hold initial settings for the CPU Bus
Unit. When the contents of this area are changed from the program to reflect a
change in the system, the Restart Bits (A501.00 to A501.15) for affected Units
must be turned ON to restart the Units.
CPU Bus Units can be used after being initialized when the PLC’s power is
turned ON or the Unit’s Restart Bit (A501.00 to A501.15) is turned ON. The
Unit’s CPU Bus Unit Initialization Flag (A302.00 to A302.15) will be ON while
the Unit is initializing.
Cyclic I/O refreshing will not be performed for a CPU Bus Unit while its CPU
Bus Unit Initialization Flag is ON.
Part of the DM Area can be saved to flash memory.
DM data will be saved automatically when the retained area is overwritten
from the CX-Programmer, a DM data transfer operation, or a PT. The DM data
will not be saved when the retained area is overwritten by an instruction in the
ladder program.
DM Area words D20000 to D32767 are backed up.
The flash memory lifetime will be shortened if data is frequently written to the
retained area. For example, do not write data from the PT to the retained area
every cycle.
Each CPU Bus Unit is
allocated 100 words in
the DM Area.
Flash Memory Error Flag
Name
Coordinator
Module
Power
ON or
Restart
Cyclic or
when
requested
CPU Bus Unit
A403.10
Address
Turns ON when the flash memory fails.
Function
Section 6-4