Instructions

Intesis
TM
INMBSDAI001I000
User’s Manual r2.3 EN
© HMS Industrial Networks S.L.U - All rights reserved
This information is subject to change without notice
URL https://www.intesis.com
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INDEX
1. Presentation ........................................................................................................ 5
2. Connection .......................................................................................................... 6
2.1 Connect to the AC indoor unit ........................................................................... 6
2.2 Connection to the EIA-485 bus .......................................................................... 6
3. Quick Start Guide ................................................................................................. 7
4. Modbus Interface Specification ............................................................................... 8
4.1 Modbus physical layer ...................................................................................... 8
4.2 Modbus Registers ............................................................................................ 8
4.2.1 Control and status registers .......................................................................... 8
4.2.2 Configuration Registers .............................................................................. 10
4.2.3 Considerations on Temperature Registers ..................................................... 10
4.3 DIP-switch Configuration Interface .................................................................. 13
4.4 Implemented Functions .................................................................................. 16
4.5 Device LED indicator ...................................................................................... 16
4.6 EIA-485 bus. Termination resistors and Fail-Safe Biasing mechanism ................... 16
5. Mechanical and electrical features .......................................................................... 17
6. List of supported AC Unit Types ............................................................................. 18
7. Error Codes ........................................................................................................ 19