The EMCP 4 has five levels of security access:
- "LEVEL 0"
- "LEVEL 1"
- "LEVEL 2"
- "LEVEL 3"
- "SERVICE TOOL"
Any configurable parameter or function that is set to "LEVEL 0" can be accessed by anyone at any time, and there will never be any security information on the display screen.
"LEVEL 1" access and "LEVEL 2" access represent increasing levels of access to the setpoints and functions of the controller. Both levels 1 and 2 can be password protected with separate user-defined passwords.
Note: These are optional levels of security, by default these passwords are disabled, and the default access level is "LEVEL 2" from parts service.
"LEVEL 3" access is password protected at the factory, and requires contacting the technical communicator at the Caterpillar Dealer to obtain a password.
If the present security level of the controller is below the level needed to perform a desired function, a padlock and a number will be displayed at the bottom right-hand corner of the display. The number represents the level of security that is required in order to perform the desired function: 1, 2, or 3.
If there is a padlock but no number, then the Caterpillar service tool is required in order to perform the desired function, or the setpoint may be read only and cannot be changed.
All of the adjustable parameters are associated with a specific level of security required to adjust the parameter. Certain functions, such as resetting the number of crank attempts, are also associated with a specific level of security. The passwords only effect actions taken at the EMCP 4. Access of the EMCP 4 remotely via the Caterpillar service tool or via the SCADA data link is not affected by the security level on the EMCP 4 display.
Changing parameters with the Caterpillar service tool does not require passwords, since the service tool already has the highest level of access.
When connecting via the SCADA data link, passwords can also be used. The levels of access granted via SCADA are identical to the levels of access granted at the EMCP 4. However, the passwords may be different. Furthermore, the EMCP 4 and the SCADA data link may be at different levels of access at any given time.
Level 1 and Level 2 passwords are usually "DISABLED" when shipped from the factory. Level 1 and Level 2 passwords can be user-defined if desired. If the Level 1 and Level 2 passwords are not user-defined, the Level 2 will be the "MINIMUM LEVEL". All parameters that require Level 0, Level 1, or Level 2 security can be changed by anyone at any time.
Note: The EMCP 4 will always move up in security level to the highest level of access that is not password protected when a certain level of access is requested. For example, if a Level 1 password has been defined, but a Level 2 password has not, the EMCP 4 will start at Level 0 on power up. When the Level 1 password is entered, the EMCP 4 will move up to Level 2 access.
Use the following steps in order to access the "SECURITY" menu:
- From the "MAIN MENU", press the up key or the down key in order to highlight the "CONFIGURE" menu. Press the "OK" key (14).
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Illustration 2 g02255114 - Press the up key or the down key in order to highlight the "SECURITY" menu. Press the "OK" key (14).
A screen that is like Illustration 3 will appear.
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| Illustration 1 | g02255113 |
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| Illustration 3 | g02255334 |
There are six options within the "SECURITY" menu:
- DROP TO MIN LEVEL
- ENTER LEVEL 1 OR 2
- ENTER LEVEL 3
- CHANGE LVL 1 PSWD
- CHANGE LVL 2 PSWD
- CHANGE SCADA PSWD
Selecting "DROP TO MIN LEVEL" will make the control go to the minimum level of security. If the level 1 and level 2 passwords are not defined by the user, the minimum level of security will be level 2. If a level 2 password is defined by the user, but not a level 1 password, then the minimum level of security will be level 1.
In contrast, if a level 1 password is defined by the user, but not a level 2 password, then the minimum level of security will be level 0.
- Selecting "ENTER LVL 1 OR 2" will open up a password entry screen.
The password entry screen will have four spaces. In each space numbers from 0 through 9 can be entered. The password can be from 1 to 4 digits and is entirely user-defined. Enter the password for either level 1 or level 2 if either of those passwords have been defined.
Refer to Illustration 4.
- Press the up key or the down key in order to increment or decrement the highlighted digit to the desired number.
- Press the left key or the right key to navigate between the digits.
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Illustration 5 g02255755 - Selecting "ENTER LEVEL 3" will cause the panel to display "PHONE IN WITH" and a 16-digit number will be displayed. Under the number, "ENTER RESPONSE" will be highlighted. Record the 16-digit number and call the technical communicator at the Caterpillar Dealer with this number. The technical communicator will reply with another 16-digit number.
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Illustration 6 g02255893 - Press the "OK" key from the "PHONE IN WITH" screen, and a password entry screen will be displayed. Enter the password that was supplied by the technical communicator in the same manner as the other types of passwords.
- Press the "OK" key to confirm, or the escape key to reject the change. Press the "OK" key after entering the number to set the current level to 3. The control will remain in level 3 security level until no key presses have been made for 10 minutes. After 10 minutes of inactivity the control will revert to the minimum level of security.
The following is required to change a level 3 parameter:
- Level 3 password
- PC connection using a service tool
If you have a service tool available, attempt to change the parameter using the service tool rather than calling the TC.
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| Illustration 4 | g02255573 |
Selecting "CHANGE LVL 1 PSWD" will allow for the level 1 password to be changed. The control must be at level 1 security in order to select "CHANGE LVL 1 PSWD". The "CHANGE LVL 1 PSWD" screen looks just like the password entry screen. The "CHANGE LVL 1 PSWD" has four blank spaces that can each be set to a number from 0 to 9. The password can use as few as one digit and can use as many as four digits. The user determines the number of digits. If a password has been set, but now it is desired to not have level 1 password protection, the level 1 password can be disabled by setting the password to be a single 0.
Once the desired password is entered, press the "OK" key and the control will go back to the security screen and the level 1 password will be set.
Select "CHANGE LVL 2 PSWD" to change the level 2 password. The control must be at level 2 security in order to select "CHANGE LVL 2 PSWD". The "CHANGE LVL 2 PSWD" screen looks just like the password entry screen. The "CHANGE LVL 2 PSWD" has four blank spaces that can each be set to a number from 0 to 9. Selecting a password is entirely up to the user and can use as few as one digit or as many as four digits.
The level 2 password can be disabled by setting the password to be a single 0
Once the desired password is entered, press the "OK" key and the control will go back to the "SECURITY" menu and the level 2 password will be set.
Select "CHANGE SCADA PSWD" to change the SCADA password.
This password, if "ENABLED", will require a SCADA system to first enter the password into the "WRITE ACCESS PASSWORD" register prior to conducting any other reads and writes. The control must be at level 2 security in order to select "CHANGE SCADA PSWD". The "CHANGE SCADA PSWD" screen looks just like the password entry screen. It has eight blank spaces that can each be set to a number from 0 to 9. The password can use as few as one digit and can use as many as eight digits.
Just as with level 1 and level 2 passwords, entering a single 0 will "DISABLE" the SCADA password.