Instructions

Intesis

INMBSMIT001I000

User’s Manual r2.4 EN

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 ...................................................... 11

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. Electrical and Mechanical features .......................................................................... 17

6. List of supported AC Unit Types. ............................................................................ 18

7. Error Codes ......................................................................................................... 19