Marathon Computer V3.5 user manual Alarm Messages

Maintenance and Troubleshooting

Unipro 3.5

Alarm Messages

Programmer alarms interrupt Manual display, as discussed in "Keyboard Operations". This prevents important error messages from being lost while the Manual display is activated.

Once any of the following alarms are displayed and/or sounded, the dual-key operation Shift/"down arrow" cannot be used until the alarm is silenced by pressing Enter. This does not clear the alarm, however.

Programmer Alarms appear at Event 0 on the Optomux board.

To respond to alarm displays (#01-#98)

1.Press Enter one time to deactivate alarm relay contact (silence).

2.Examine the display to determine the origin of the system alarm:

Messages #01-79:

Indicate a programmed alarm (from an "A-ALARM" OPCODE in the program) has occurred. The response should be to carry out whatever task the message code indicates. For example, Message #37 might mean put test pins in furnace, while #28 might mean to manually change the temperature setpoint to 1550`F. These codes should\d be assigned for the particular installation involved.

Message #80-#81:

Rev. 8.00

November 30, 1995