Emerson ROC827 instruction manual Central Processor Unit CPU

ROC827 Instruction Manual

4.Using a flat-bladed screwdriver, gently pry the plastic locking clips at the upper and lower back edge of the EXP housing away from their securing tabs.

Note: Applying too much pressure breaks the plastic hooks.

5.Once you free the plastic locking clips from their securing tabs, gently pivot the back of the EXP away from the ROC827.

Note: The EXP detaches quickly. Hold it securely to prevent it from falling.

6.Place the detached EXP in a secure location.

7.Replace the right-hand end cap.

8.Replace the ROC827 on the DIN rail.

9.Reattach all wiring.

10.Replace the wire channel covers.

2.6Central Processor Unit (CPU)

The ROC827 uses a standard ROC800-Series central processing unit (CPU) containing the microprocessor, the firmware, connectors to the backplane, the three built-in communication ports (two with LEDs), a LED low power wakeup button, a RESET button, the application License Key connectors, a STATUS LED indicating system integrity, and the main processor (refer to Figures 2-5 and 2-6 and Tables 2-1 and 2-2).

The 32-bit microprocessor is based on a Motorola MPC862 Quad Integrated Communications Controller (PowerQUICC) PowerPC processor running at 50 MHz.

The internal Sanyo 3-volt CR2430 lithium backup battery provides backup of the data and the Real-Time Clock when the main power is not connected.

Issued Mar-06 Installation and Use 2-13