How To Set Password

This topic describes

control unit's default password options
how to change password
how to reset password

Default password

The default user password is control unit specific.

Depending on product the default password is:

the four last digits of the serial number (e.g. serial 12345678 has user password 5678)
empty
customer specific

It is advised to analyze the risk whether to keep or change the default product password. Changing the default password is recommended.

To change password

The password can be changed by

CODESYS application
- Using Epec MultiTool Creator and code template
- Using customer application
CAN bus using CANopen tools (e.g. MultiTool Diagnoser)

Use CODESYS node-ID for unlocking and changing password from CAN bus.

The OD indexes exist only in firmware's object dictionary.

See also Epec MultiTool Creator manual for UI options for password configuration. CODESYS code template contains password configuration for control unit's where UI options are selectable in MultiTool Creator.

Step	CODESYS	CAN Bus
1. Unlock password protection	See section, Unlocking SW protection for instructions.	See section, Unlocking SW protection for instructions.
2. Change password	Use PasswordChange (External FUN)	Write a new password string to index 2031h sub-index 2 (max length 20 ASCII characters, including terminating zero).
3. Save communication parameters	Use SystemParametersSave (External FUN)	Write save command to index 1010h sub-index 1.

To reset password

Password can be reset to default value with firmware OD index using CANopen tool (e.g. MultiTool Diagnoser).

Step	CAN Bus
1. Unlock password protection	See section, Unlocking SW protection for instructions.
2. Reset password	Write to index 2031h sub-index 3. Command data is irrelevant.

In following products the password reset functionality will reset all FW system parameters to defaults:

SL8X/SM8X/SC4X with FW release 1.0 or older
SC52
SL84
EC44

In these products the password is also reset when using CANopen 1011h sub1 load command or SystemParametersRestore (External FUN)

In SL8X/SM8X/SC4X with FW release 1.2 or newer, the password is reset to factory default only by the password reset functionality.