Emerson E2 User Manual

Table 2-3 - Main Board (CPU) LED’s Status
Main Board
(CP
U) LEDs
Status
Green
(D1 General
St
atus LED for
E2 and Blank
Face E2)
1 blink every two seconds (1 second
ON, 1 seco
nd OFF): Main board is
operating normally.
Solid ON: E2 is booting up.
Faster blinks per second: Indicates an
error con
dition with the hardware or
firmware.
Green
(D18 Boot Sta-
tus LED)
ON: E2 is booting up.
Table 2-4
- Keyboard LED’s Status
Keyboard
LED
Status
Green (D5
General St
atus
LED)
1 blink every two seconds (1 second
ON, 1 seco
nd OFF): Status is nor-
mal.
4 blinks per second: A flash and/or
cr
ystal problem has been detected.
Board should be replaced.
I/O Network Boards and Peripherals Hardware Overview • 2-3
2.2 I/O Network Boards
and Peripherals
2.2.1 The Gateway Board
Figure 2-5 - Gateway Board
The Gateway board is an RS485 to RS485 converter.
One side of the Gateway is always connected to the Emer-
son Retail Solutions I/O Network. The other side of the
Gate
way is the receiver bus (RS485). The receiver bus is
connected to one or more RS485 devices depending on
which type of Gateway is being used. The Gateway inter-
faces devices to the Einstein/E2 a
nd legacy Emerson
Retail Solutions controller (REFLECS) by simulating
16AI and 8RO boards using Emerson Retail Solutions
standard I/O board protocol. The Gateway can also con-
vert third-party controller protocols to Emerson Retail
Solut
ions protocol for custom cells created in the Einstein/
E2 to interface with third-party controllers (Danfoss,
Woodley, etc.).
The Gateway performs one of two basic functions:
1. It allows control of and/or status of a device using
I/
O board simulation
2. Converts a third-party protocol to Emerson Retail
Solutions
I/O Net protocol and interfaces to a

Emerson E2 Specifications

General

Model	E2
Manufacturer	Emerson
Category	Controller
Power Supply	24 VAC/VDC
Communication Protocols	Ethernet
Output Type	Relay, Analog
Communication Protocol	Ethernet
Application	Refrigeration and HVAC system control