Emerson MRLDS Operations Manual download pdf (Page 11)

Network Layout MRLDS Modbus Version (809-101x) • 5

3.4.3 RMCC Controllers

For RMCC-type controllers, set the Gain parameter to

250 and Offset to -1000.

4MRLDS Modbus

Version (809-101x)

4.1 Network Layout

4.2 MRLDS Setup

4.2.1 MRLDS Wiring

4.2.2 MRLDS Network Addressing

Modbus network settings are set on jumpers J5, J4,

and J3. Refer to Table 4-1 (also included on the inside

label of the MRLDS) for network addressing with corre-

sponding jumper settings.

If more than one MRLDS is on the network, each unit

must have a unique address and be numbered according to

the inside label (Table 4-1) specifications.

Figure 3-4

- Analog Input Screen Settings Example for E2

Figure 4-1 - Network Layout Example

Gateway

MRLDS

I/O Net

MODBUS

(Up to 12 MRLDS

units on the networ

per Gatewa

Figure 4-2 - Modbus MRLDS Wiring

Figure 4-3 - MRLDS Jumpers (Inside Lower Portion of Cover)

(

)

(

)

MRLDS - INSIDE LOWER

PORTION OF BASE

Shield

drain/ground

wire

MODBUS

NETWORK

To Gateway

Board

A transformer must

be shared

between MRLDS

and the Gateway

board. A

must

be used.

If a transformer is

shared between

MRLDS units,

the “ACN” of

each MRLDS

must be wired

to the same

phase of the

never

separate

transformer

MODBUS

BELDEN

8761

14 AWG less

than 6 inches

J5J4 J3

J2 J1

refrigerant

type

jumpers

network

address

jumpers

term

jumper

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 19 20

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Emerson MRLDS Operations Manual Page 11

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