Reading/Writing A Memory Card; Backing Up The System; Restoring The System - Delta Electronics AH500 Operation Manual

7.5 Reading/Writing a Memory Card

Users can read/write data into/from a memory card to back up and update a system by means of the DIP switch
on a CPU module.

7.5.1 Backing up the System

When a system backup is executed, the user program, the parameter setting, the hardware configuration, the
network configuration, and the values on the device memories in a CPU module are backed up and saved as a
file called AUTOEXEC.dup, which is stored in a folder named SysDup in a memory card. If a default path
denotes an existing backup file, the previous data in the old backup file is overwritten when a system is backed
up.
A system backup can be executed, whether a CPU module runs or stops. However, users have to make sure
that the write protect tab on the left side of a SD card is slid upward before a system backup is executed. The
system backup procedure is as follows.
(1) Turn DIP switch 3 ON, and turn the other switches OFF. If users do not want to back up the values on the
device memories, they need to turn DIP switch 4 ON.
Complete backup
(2) Press the CLR button on the CPU module for five seconds. When the system backup is executed, the
SYSTEM LED indicator blinks. After the system backup is complete, the SYSTEM LED indicator is OFF.
When the system backup is executed, the SYSTEM LED
indicator blinks.

7.5.2 Restoring the System

Before a system restoration is executed, users have to make sure that the backup file AUTOEXEC.dup is
stored in a folder named SysDup in a memory card. After the system restoration is executed, the user program,
the parameter setting, the hardware configuration, and the network configuration in the memory card are
restored to a CPU module. In addition, if the data in the backup file includes the values on the device memories,
the data restored to the CPU module will include the values on the device memories.
Before a system restoration is executed, users have to disconnect a CPU module. The system backup
procedure is as follows.
(1) Make sure that the CPU module is disconnected, turn DIP switch 2 ON, and turn the other switches OFF.
OFF ON
OR
1
The values in the devices are not backed up.
C h a p t e r 7 Me m o r y C a r d
OFF ON
1
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