Emerson E2 Manuel D’Utilisation

The E2 CPU or main processor board (Figure 2-2) 

contains the CPU, Ethernet port, and memory used for log-
ging. The coin battery for the E2 is located on this board 
and protects log and alarm data during power loss. The 
main processor board connects to the PIB via a ribbon 
cable. The RX- and CX-100 versions support mono-
chrome display only. For optimum viewing, backlight and 
contrast adjusts are available for customizing the mono-
chrome display depending on the user’s needs.

The E2 Processor Interface Board (PIB) interfaces the 

power and most all communications with the main proces-
sor board, and contains all field wiring connections. The 
PIB allows you to connect an external keyboard, accessory 
cards, and an external computer. All RS485 connectors are 
located on the PIB.

The E2 has a QWERTY style keyboard layout with 

two rows of function keys. The first row (

-) is 

comprised of screen-specific function keys, and the sec-
ond row has designated icon keys. The five icon keys are 
Help 

, Alarms , Home , Menu , and 

Back 

.

The PIB, main processor board, and keyboard (located 

behind the main board) LEDs can be used to determine the 
status of normal operating parameters for the unit.

Green (14)

ON: Power is being applied to the 
PIB

Yellow (RX1)

ON: Communication is being re-
ceived on RS485 Port 1A

Yellow (RX2)

ON: Communication is being re-
ceived on RS485 Port 1B

Red (TX)

ON: Communication is being sent on 
RS485 Port 1A and 1B