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FMC Technologies Smith Meter microFlow.net Liquid - User Manual

FMC Technologies Smith Meter microFlow.net Liquid
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Bulletin MNFL003 ║ Issue/Rev 0.1 (9/13)
Electronic Preset Delivery System
Smith Meter
®
microFlow.net Liquid
Modbus and Modbus/TCP Communications

Table of Contents

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FMC Technologies Smith Meter microFlow.net Liquid Specifications

General IconGeneral
BrandFMC Technologies
ModelSmith Meter microFlow.net Liquid
CategoryMeasuring Instruments
LanguageEnglish

Summary

Introduction to Modbus Communications

Modbus;TCP Protocol

Explains Modbus/TCP as a standard for TCP/IP based Modbus over Ethernet/SLIP.

Floating Point Endian Control

Discusses variations in floating-point number representation in Modbus.

Communications Control Selections

Defines control levels for communication ports like Poll & Program, Host Control, XON/XOFF.

Configuring Serial Modbus Communications

Steps for configuring the device for Modbus via serial port.

Configuring TCP;IP Modbus Communications

Steps for configuring Modbus/TCP communication via Ethernet or SLIP.

Implementing Remote Host Functionality

Implementing Host Status Polling

Describes coils to be read for routine polling to monitor critical states.

Host Control Interface via Modbus

Details how to use Modbus for host control and automation, including registers and command status.

Entering Program Mode via Modbus

Explains how to enter and manage the device's program mode using Modbus commands.

Setting Time and Date

Details Modbus registers for configuring the device's current time and date.

Alarm Clearing

How to clear active alarms on the device using Modbus commands.

Reading Transaction Log Data

Reading historical transaction data from Modbus logs.

Reading Event Log Data

Reading historical events from the event log via Modbus.

Reading Audit Log Data

Reading historical data from the audit log via Modbus.

Modbus Register Reference

System Status Registers (SYS_RUN_DATA)

Contains system runtime data as boolean values for status monitoring.

System Alarm Registers (SYSTEM_ALARMS)

Lists various system alarms as boolean flags for alert status.

Communication Port Configuration (COMM_PORT_DIR)

Configuration settings for communication ports, including interface types.

Metering Data Registers (METER_DIR)

Meter parameters, including flow rate and density, for accurate measurement.

Product Data Registers (PRODUCT_DIR)

Product-specific parameters like flow rates and limits for configuration.

Recipe Configuration Registers (RECIPE_DIR)

Recipe settings for additive amounts and rates per cycle.

Transaction Log Registers (TRAN_RUN_DATA)

Transaction details and timing information for logging and analysis.

Appendix

Modbus Communications Primer

Provides an introduction to Modbus communications protocols and concepts.

Modbus Functions Overview

Lists and describes the primary Modbus functions implemented in the device.

Master;Slave Communications

Describes the communication model between master and slave devices in Modbus.

Error Check (CRC16)

Explains the CRC-16 error checking mechanism for ensuring data integrity.

Field Contents In Modbus Messages

Shows examples of Modbus query and response message fields in hexadecimal.

Query Response Structure

Describes the general structure of responses to Modbus read queries.

Modbus Function Descriptions

Details specific Modbus functions like Read Relay Status, Force Relay, and Preset Registers.

Exception Responses

Describes how the device handles and returns exception responses to queries.

Accessing 64-bit Information via Modbus

Explains methods to read 64-bit data using Modbus with 32-bit limitations.

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