Emerson ROC827 CPU Connector Locations, Status LED Functions, CPU Number Definitions

ROC827 Instruction Manual

Table 2-1. CPU Connector Locations

CPU Number	Definitions
J4	Not Used
P2	LOI Port RJ-45
P3	Ethernet RJ-45
P4	License Key Terminal
P6	License Key Terminal
SW1	LED Button
SW2	RESET Button

The CPU contains a microprocessor supervisory circuit. This device monitors the battery voltage, resets the processor, and disables the SRAM chip if the voltage goes out of tolerance. The CPU has an internal Analog to Digital Converter (A/D). The A/D monitors the supply voltage and board temperature (refer to “Automatic Self-Tests”in Chapter 1, General Information).

The CPU has two buttons, LED and RESET (see Figures 2-6 or 2-7):

ƒRESET: Use this button to reset the ROC827 to system defaults (refer to “Preserving Configuration and Log Data” in Chapter 6, Troubleshooting).

Note: First, remove power from the ROC827. Then press and hold in the RESET button while you re-apply power to the ROC827. Finally, release the RESET button.

ƒLED: Press to turn on the LEDs on the CPU module, I/O modules, and communication modules when the ROC827 has timed out.

The STATUS LED helps to indicate the integrity of the ROC827 (refer to

Table 2-2).

Table 2-2. STATUS LED Functions

Status LED	Color	Definitions	Solution
Continually	Green	ƒ ROC827 functioning normally.	ƒ N/A
Lit

Continually	Red	ƒ Low Battery Voltage alert.
		ƒ System AI (Point number 1) LoLo
Lit
			Alarm.
Flashing	Green	ƒ	Firmware invalid.
Flashing	Green-Green	ƒ	Firmware update in
	to Red-Red		decompression.
Flashing	Green to Red	ƒ Firmware update is flashing image.

ƒCharge battery.

ƒApply DC voltage source.

ƒUpdate firmware.

ƒDo not restart the ROC827.

ƒDo not restart the ROC827.

To save power, you can enable or disable the LEDs on the ROC827 (with the exception of the LED on the power module). Using the ROCLINK 800 software, you can define how long the LEDs remains on after you press the LED button on the CPU module. For instance, with the default setting of five minutes, all LEDs turn off after five minutes. If you press the LED

Issued Mar-06 Installation and Use 2-15