Appendix A. Bms And Rs-485 Interface; A1. Communication Settings; A2. Rs-485 Specifications; A3. Modbus Parameters And Variables - Danfoss DEVIreg Multi Installation And User Manual

Installation and User Guide

Appendix A. BMS and RS-485 interface

The controller has a built-in Modbus data transmission system and can be connected to
the BMS central unit .

A1. Communication settings

Default communication settings:
• Serial address: 1 .
• Serial baud rate (Transmission speed): 19200 .
• Serial setting: 8N1 .

A2. RS-485 specifications

MCX hardware network specifications (wiring, topology, etc . ) can be found in Danfoss document:
User manual. Meet any HVAC requirement with the reliability of MCX network.
This document provides general indications for the setup of RS-485 networks .

A3. Modbus parameters and variables

Modbus parameters and variables for DEVIreg™ Multi controller .
LABEL
PARAMETERS & STATUS VARIABLES
Q10 Activate channels > Activate #1
P16 Activate #1
W10 Activate channels > Activate #2
O16 Activate #2
R10 Activate channels > Activate #3
I16 Activate #3
G10 Activate channels > Activate #4
U16 Activate #4
H10 Activate channels > Activate #5
Y16 Activate #5
Z10 Activate channels > Activate #6
T16 Activate #6
X10 Activate channels > Activate #7
V16 Activate #7
FEC | Produced by Danfoss ©
DESCRIPTION
DEVIreg™ Multi
MIN MAX.
0 1
0 1
0 1
0 1
0 1
0 1
0 1
VALUE/TYPE UNIT
0 – NO Enum 2
1 – YES Enum 2
0 – NO Enum 2
0 – NO Enum 2
0 – NO Enum 2
0 – NO Enum 2
0 – NO Enum 2
RW ADU
RW 3001
RW 3002
RW 3003
RW 3004
RW 3005
RW 3006
RW 3007
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