Danfoss DEVIreg Multi

Installation and User Guide DEVIreg™ Multi
FEC | Produced by Danfoss © 37
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 DESCRIPTION MIN MAX. VALUE/TYPE UNIT RW ADU
PARAMETERS & STATUS VARIABLES
Q10 Activate channels > Activate #1
P16 Activate #1 0 1 0 – NO Enum 2 RW 3001
W10 Activate channels > Activate #2
O16 Activate #2 0 1 1 – YES Enum 2 RW 3002
R10 Activate channels > Activate #3
I16 Activate #3 0 1 0 – NO Enum 2 RW 3003
G10 Activate channels > Activate #4
U16 Activate #4 0 1 0 – NO Enum 2 RW 3004
H10 Activate channels > Activate #5
Y16 Activate #5 0 1 0 – NO Enum 2 RW 3005
Z10 Activate channels > Activate #6
T16 Activate #6 0 1 0 – NO Enum 2 RW 3006
X10 Activate channels > Activate #7
V16 Activate #7 0 1 0 – NO Enum 2 RW 3007