Smart temp SMT - 131 User Manual

SMT - 131
Manual
Ver 1.1

Smart temp SMT - 131 Specifications

General

Brand	Smart temp
Model	SMT - 131
Category	Thermostat
Language	English

Summary

Installation Guide

Terminal Identification

Details the function of each terminal on the SMT-131 for wiring connections.

Modbus Communication

Modbus Wiring Best Practices

Guidelines and diagrams for correct Modbus network wiring and connections.

Occupancy Input Functionality

How digital inputs trigger the 'unoccupied' state, affecting set points and operation.

Installer Options Menu

Navigating Installer Mode

Instructions on how to navigate and adjust settings within the installer menu.

Installer Option List

Detailed list of installer options, their settings, and default values for the SMT-131.

Modbus Data Structure

Modbus RTU Protocol Details

Details the Modbus RTU protocol, byte format, address range, and baud rates supported by the SMT-131.

Modbus Holding Registers: System Status

DIP Switch and Occupancy Status

Registers for DIP Switch Settings (40003) and Occupancy Status (40004).

HVAC and Fan System Status

Registers for HVAC Status (40007) and Fan Status (40008).

Modbus Holding Registers: Temperature Control

User Set Point and Limits

Registers for User Set Point (40009), High/Low Limits (40014/40015), Dead Band (40016), and Relay Span (40017).

Auto Off Timer and Unoccupied Heat Set Point

Modbus Holding Registers: Advanced Configuration

Unoccupied Mode Settings

Communication Settings

Registers for Modbus Address (40030) and Baud Rate (40031).