User's Manual

545C Operations Manual

02/10/2012 Prerelease DCN 00001789-A

The RAM contents will be lost under the following conditions:

• The Boot command is issued.

• The Reset button (SW1) is depressed. (Remove the rear panel to

locate SW 1.)

• The internal backup battery fails or is disconnected. (In -02 units,

remove jumper JP1 while the external power is turned off to the

unit. In -03 or later units, remove connector J1.)

• The watchdog timer initiates a restart.

The software will detect these events and will recopy the parameters

and configuration values from Parameter memory back into RAM when

operation is resumed.

If the contents of Parameter memory become invalid the unit will revert

to the factory defaults in Program memory.

3.8 Front Panel LEDs

The two LEDs on the front panel provide the operator with a quick

assessment of the unit’s operational status.

Figure 6: MCC-545C front panel LEDs

LED COLOR STATUS

Green; flashes every 5 seconds

Power is on and the processor is running

ON LED