MSS3s Machine Security System Caterpillar

Note: Changing the MSS Bypass times requires you to use a key with master access level or a factory password.

1. Insert a key with Master Access Level in the key start switch and turn to the ON position.

2. Select "Service/Configuration" from the tool bar of the Cat ^® ET. This selection will bring up the Configuration screen.
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   Illustration 1	g03866205
   Typical ET screen

3. Highlight the "Security System Bypass Start Time" for the day that you want to set up. Press the "Change" push button at the bottom of the page. This button will bring up the "Change Parameter Value" screen.

4. Enter the desired "start time" in the space that is provided. Then click the "OK" button.

   All times are based on a 24 hour clock. If you want the desired start time to be 6:00 am, then enter 06:00. If you want the desired start time to be 6:00 pm, then enter 18:00. Include the colon in the time setting or the MSS will not accept your entry.

5. Highlight the "Security System Bypass Stop Time" for the same day. Press the "Change" push button at the bottom of the page. This button will bring up the "Change Parameter Value" screen. Enter the desired "stop time" in the space that is provided and click the "OK" button.

6. Repeat Steps 3 and 5 for all days which should have Bypass Activation Times.

7. To have the MSS armed 24 hours a day, repeat Steps 3 and 5 entering 00:00 as the "Start time" and 00:00 as the "Stop time".

   Note: All times are based on a 24 hour clock. The Machine Security System automatically adjusts for Daylight Savings Time (DLST). If Daylight Savings Time is not observed in your area, you will need to reset the time in the MSS. The time change occurs on the first Sunday in April and the last Sunday in October. If DLST changes on a different date in your area than in the United States, you will need to reset the time on that day. Refer to Testing and Adjusting, "Time - Set" for instructions on setting the date and the time of the MSS.