Danfoss DEVI DEVIreg Hotwater, Installation And User Manual, Page: 21 / 28

Installation and User Guide DEVIreg™ Hotwater
FEC | Produced by Danfoss ©
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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™ Hotwater controller .
LABEL DESCRIPTION MIN MAX.
VALUE/
TYPE
UNIT RW ADU
PARAMETERS & STATUS VARIABLES
SYS Main Menu > System variables
S1 MaxH1_0dec 0 100 80 RW 3001
S2 MaxH1_1dec 0 .0 100 .0 80 .0 RW 3002
S3 MaxH2_0dec 0 100 80 RW 3003
S4 MaxH2_1dec 0 .0 100 .0 80 .0 RW 3004
S5 MaxH3_0dec 0 100 80 RW 3005
S6 MaxH3_1dec 0 .0 100 .0 80 .0 RW 3006
S7 MaxH4_0dec 0 100 80 RW 3007
S8 MaxH4_1dec 0 .0 100 .0 80 .0 RW 3008
S9 AlarmH1 0 .0 90 .0 90 .0 RW 3009
S10 AlarmH2 0 .0 90 .0 90 .0 RW 3010
S11 AlarmH3 0 .0 90 .0 90 .0 RW 3011
S12 AlarmH4 0 .0 90 .0 90 .0 RW 3012
S13 InitConfigured 0 1 0 RW 3013
S14 Dis_warn 0 1 0 RW 3014
StU Service > System