Honeywell SMV800 - User Manual

Other manuals for Honeywell SMV800

Questions and Answers:

qparkerOct 29, 2025

Why is there no communication between my Honeywell SMV800 Transmitter and the host?

M
Megan DelgadoOct 29, 2025
To troubleshoot communication issues between your Honeywell Transmitter and the host, consider the following: 1. Ensure the voltage across the transmitter's power terminal is within the range of 9.5V–30 Vdc. 2. Confirm that the RS485 bus is correctly terminated with a 120 Ohm resistor or via AC termination at each end. 3. Make sure the RS485 bus is only terminated at its ends. 4. Inspect for any intermittent shorts, open circuits, or multiple grounds. 5. Check that the power and RS-485 bus wirings are not swapped. 6. Verify the RS-485 wires are connected to the correct communication terminals (A, B, and RS485 common) and that the grounding scheme is correctly implemented. 7. Confirm that the baud rate is identical for both the host and the transmitter. 8. Check the transmitter's a...

Honeywell SMV800 Specifications

General

Manufacturer	Honeywell
Operating Temperature	-40 to 85°C (-40 to 185°F)
Housing Material	Aluminum or Stainless Steel
Product Type	Smart Multivariable Transmitter
Input	Differential Pressure, Static Pressure, Temperature
Output	4-20mA HART, FOUNDATION Fieldbus
Hazardous Area Approvals	FM, CSA, ATEX, IECEx
Protection Rating	NEMA 4X, IP66/67
Process Connection	1/2" NPT, 1/4" NPT

Summary

1. Introduction

1.1 Overview

Introduction to the transmitter's physical and functional characteristics.

1.2 Features of the transmitter

Lists the transmitter's capabilities, supported measurements, and options.

1.3 SMV800 Transmitter Name Plate

Details on the transmitter's nameplate information and model number format.

2. Configuration

2.1 Software installation and setup

Steps and requirements for installing the configuration software.

2.3 Device Setup

Configuration options related to the device's physical and logical setup.

2.3.1. Device information

Details and parameters related to the device's identification and specifications.

2.3.2. Local Display

Configuration options for the device's local display interface.

2.3.3. Differential Pressure Configuration

Parameters and settings for configuring Differential Pressure measurements.

2.3.4. Static Pressure Configuration

Parameters and settings for configuring Static Pressure measurements.

2.3.5. Flow Configuration

Parameters and settings for configuring flow measurements.

2.3.6. Meterbody Temperature Config

Parameters and settings for configuring Meterbody Temperature.

2.3.7. Process Temperature Configuration

Parameters and settings for configuring Process Temperature.

2.3.8. Using Custom Units for Flow Measurement

How to define and use custom units for flow measurements.

2.3.9. Diagnostics

Configuration and information related to device diagnostics and error logging.

2.3.10. Meterbody Details

Information about the meterbody, including ID, model key, and material details.

2.3.11. MODBUS COM Config

Configuration settings for the Modbus communication interface (address, baud rate, parity).

2.4 Maintenance

Procedures for device maintenance, including security and calibration records.

2.4.1. Device security & protection

Features for securing the device, including write protection and tamper alarm.

2.4.2. Calibration & Correction records

Details on factory calibration and methods for performing sensor calibrations.

2.4.3. Review [Maintenance]

Information review for maintenance-related details.

2.5 Advanced Diagnostic

Information on advanced diagnostics, including tracking, error logs, and history.

2.5.1. Tracking

Monitoring of various module service lives and operational parameters.

2.5.2. Error Log

Review of recorded error messages and their timestamps.

2.5.3. Config History

Review of parameters updated during recent configuration changes.

2.5.4. Review

General review of device parameters.

2.8 Offline Configuration

Process for creating and applying device configurations offline.

2.6 Monitoring

Monitoring of device faults and process variables.

2.6.1. Faults

Display of critical and non-critical faults (alarms) diagnosed by the device.

2.6.2. Process Variables

Display of current device variable values.

2.7 SMV 800 Modbus Host Menu tree

Hierarchical overview of the SMV 800 Modbus Host application menu structure.

2.9 Compare Configuration Files

Functionality to compare two configuration files.

3. Communication

3.1 SMV800 Modbus Communication

Details of the Modbus interface and register map for the SMV800 transmitter.

3.2 Modbus Communication Overview

General overview of Modbus communication for the SMV800 device.

3.2.1. Physical Layer Requirements

Specifies the physical layer requirements for Modbus communication (RS-485, half-duplex).

3.2.2. Data Format

Details on the data format used in Modbus communication (data bits, stop bits, parity).

3.2.3. Baud Rate (Software Configurable)

Configurable baud rates for Modbus serial communication.

3.2.4. Modbus data Types

Lists the data types supported by Modbus registers.

3.2.5. Modbus function codes

Overview of Modbus function codes supported by the SMV800 device.

3.2.6. User defined Function codes

Details on user-defined function codes, specifically for reading configuration history.

3.2.7. Registers for process variables

Modbus register map for accessing process variables.

3.2.8. Floating point formats

Byte order and format for floating-point numbers in Modbus.

3.2.9. Communications

Details on communication parameters like turnaround delay and statistics.

3.2.10. Implementing calibration

Procedures for calibrating process variables using trim processes.

3.2.11. Diagnostics

Status bits providing information about transmitter diagnostics.

3.2.12. Transmitter register maps

Contains register maps for coils, holding registers, and floating-point registers.

4. Operation and Maintenance

4.1 Calibration

Information on calibrating transmitter's pressure and temperature measurement ranges.

4.1.1. Differential Pressure sensor calibration

Steps for performing Differential Pressure sensor calibration using the application tool.

4.1.2. Static Pressure Calibration

Steps for performing Static Pressure sensor calibration using the application tool.

4.1.3. Process temperature sensor calibration

Steps for performing Process Temperature sensor calibration using the application tool.

4.1.4. Dual; Triple Calibration

Details on factory-set single, dual, or triple calibration options.

4.1.5. Simulate Device Variables

Temporary simulation of device variables like DP, SP, PT, and Flow.

5. Troubleshooting

5.1 Overview

Navigating the monitoring tab to identify diagnostic messages and troubleshoot faults.

5.2 Communications troubleshooting

Identifies causes and corrective actions for communication problems.

5.2.1. Device not visible on the network

Identifies causes and corrective actions for communication issues.

5.3 Alarms and conditions

Lists all alarms and conditions for the SMV800 Modbus device.

Alarm and Condition Table