Emerson E2 User Manual download pdf (Page 61)

The I/O Network The RS485 Network and Hardware Setup • 6-1

6 The RS485 Network and Hardware

Setup

Previous versions of E2 hardware and firmware before

version 2.30F01 only supported one I/O network port,

with an optional expansion card that could be used for

connection to Copeland ISD compressors or IMC/Prodigy

S-Bus rooftop unit controllers. Beginning with E2 version

2.30F01, E2s now have up to three RS485 network ports,

each of which may be configured as an I/O network, IMC/

Prodigy, ISD, or ECT MODBUS port.

Section 5, Serial Configuration of this manual covers

how to assign COM ports COM2, COM4, and COM6 to

different RS485 network types. Section 6 (this section)

explains the network types, the hardware that may be con-

nected to each type, and how to configure the devices.

6.1 The I/O Network

All boards and controllers manufactured by Retail

Solutions for communication with E2 via RS485 are gen-

erally referred to as I/O boards, and the network they are

connected to is referred to as the I/O network (or I/O

Net).

A COM port configured as I/O Net may connect with

up to 127 I/O boards. This network is used by the E2 to

read data from the input boards and to send commands to

the analog and digital output boards. Some unit control-

lers, such as CCB case controllers and MultiFlex RCBs,

also communicate with the E2 via the I/O Network.

6.1.1 I/O Board Names and Termi-

nology

There are many input, relay output, analog output, and

combination I/O boards available from Retail Solutions

for use with the E2. However, separate from the various

MultiFlex unit controller models, E2 only recognizes four

different types of I/O boards: 16AI, 8RO, 4AO, and 8DO.

All E2-compatible I/O boards communicate with E2 as if

they are one or more of these types of boards.

In this manual and in the E2 interface, when you

encounter these board names, bear in mind that they are

terms that represent many types of boards. Table 6-1

describes all the actual boards or board components for

each E2 “board type.”

Board

Type

Max # Translation

Boards That

Match Board Type

16AI 16 Any I/O board that

has digital and ana-

log inputs. The

inputs of a combina-

tion I/O board (8IO

or MultiFlex combo

board) are by them-

selves treated as one

16AI.

•16AI (discontinued)

•8IO (discontinued)

•MultiFlex 16

•The inputs on all Mul-

tiFlex combo boards

(88, 88AO, 168,

168AO, and 1616)

•All versions of the

Gateway board (some

versions behave like

as multiple 16AIs)

8RO 31 Any I/O board with

relay outputs. The

relay outputs of a

combination I/O

board (8IO or Multi-

Flex combo board)

are by themselves

treated as one 8RO.

•8RO

•8ROSMT

•The relay outputs on

all MultiFlex combo

boards (88, 88AO,

168, 168AO, and

1616 (which behaves

as two 8RO boards)

•8IO (discontinued)

4AO 16 Any I/O board with

analog outputs. The

analog outputs of a

combination I/O

board (8IO or Multi-

Flex combo board)

are by themselves

treated as one 8RO.

•4AO

•8IO (discontinued)

•The analog outputs on

the MultiFlex 88AO

and 168AO

8DO 16 Any I/O board with

+12VDC digital

pulse outputs.

•

8DO (including all

versions of the

PMAC and PMAC

II anti-sweat con-

troller)

•Digital outputs on the

MultiFlex 168DO

ARTC/

RTU

32 Rooftop HVAC con-

troller board

MultiFlex RTU and

ARTC (discontinued)

RCB 32 MultiFlex RCB

advanced rooftop

unit controller

MultiFlex RCB

Table 6-1 - Board Types and Boards Included in Each Type

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 272 273

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Emerson E2 User Manual Page 61

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