9.Read/Write Program From/To Controller

This chapter explains read/write the program from/to the α series controller. For remote maintaince Set the modem accordingly. Refer to Chapter 11 for line connection.

Note: Relocation file

This file has format as any other “.vls” file, containing information about FBD and System Sketch Windows including position information. Data which is written to Controller contains only FBD information excluding position information. This file is created, after data has been successfully written to the Controller, in the Relocation directory so that it can be used while “Read from Controller” is executed.

Note: Program protection

Password (α, α2 series).

•If a user password is written to the controller, program read access is prohibited until the correct password is entered.

•If a user attempts to write a new program to the controller, and if the program is locked with a password, the user does not have write access until the program in the controller is unlocked.

Program Read Protection (α2 series veasion 2.20 or later).

•If a Program Read Protection password is written to the controller, program read access is prohibited.

The program read protection is reset, when the controller content is erased (VLS or α2) or an unprotected user program (program read protection not set) is downloaded by VLS.

Refer to the programming manual for detailed program protection.

9.1Write Program to Controller

1)Click “Write to Controller” in the Controller menu.

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2)Unclick the “Create Relocation file” option if not required.

3)Check the “Run and Start Monitoring” option if the user requires the a series controller to incite operation.

4)Click “OK” button to begin writing program to the α series controller.

Note:

Writing a program to α series controller is possible only, when the controller is in "Stop status".

9.2Read Program from Controller

1)Click “Read from Controller” in the Controller menu.

2)Click either of the radio buttons.

When the relocation file for this program is found in the relocation directory, this window will not be opened, and reading the program will be executed.

-Map the Data Automatically

Arrange the icon suitably without using the relocation file.

-Map the Data from User Specified File

Use the relocation file of the specified program file and arrange the icon.

3)Click “OK” button to begin reading program from the α series.

Note: Relocation file

This file has format as any other “.vls” file, containing information about FBD and System sketch windows including position information. Data which is written to Controller contains only FBD information excluding position information. This file is created, after data has been successfully written to the Controller, in the Relocation directory. Thus, it can be used while “Read from Controller” is executed.

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