Hitachi PLC Getting Started page 16

Operation parameters
Several optional parameters are available. Configure if necessary.
Operation parameters
RUN input
Max. scan time
Operation mode in wrong I/O configuration
Operation mode in expansion unit error
Operation mode in remote unit error
LINK area range
etc.
If the "Operation mode in wrong I/O configuration" is enabled, CPU can work without actual I/O
modules, which is useful for debugging or testing.
On programming software
Pro-H
Ladder Editor for Win.
Retentive area
Internal memory R, WR, WM, TD can be configured as "Retentive area", which will be kept by a
battery after power off. The battery keeps data not only in the retentive area, but also the real time
clock. User program is kept in FLASH memory, which does not require battery back up.
Battery
Data in
Retentive area
Real time clock
On programming software
Pro-H
Ladder Editor for Win.
Double click on "Resource configuration"- [Operation parameters]
[Utility] - [CPU setting] - [Operation parameters]
PLC
FLASH memory
User program
Double click on "Resource configuration"- [Memory allocation]
[Utility] - [CPU setting] - [CPU information]
Default
Disable
100 ms
STOP
STOP
STOP
Disable
15
Enable
Set the address
Set the time
RUN
RUN
RUN
Set the range
Normal data
Lost after power off