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ZETRON 1708 - User Manual

ZETRON 1708
84 pages
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Models 1708 and 1716
Remote Terminal Units
Installation and Operation Manual
025-9209K

Table of Contents

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Summary

Introduction to Zetron RTU Systems

General RTU Overview

Overview of the RTU's role in a wireless SCADA telemetry system.

System Architecture Description

Explains the typical SCADA system architecture with controllers and RTUs.

MODBUS Communication System

Describes the MODBUS protocol and its use with Zetron controllers and RTUs.

RTU Connection Interfaces

Details standard input/output connections for the RTU, like digital and analog interfaces.

Zetron RTU Specifications

Physical Specifications

Outlines power, current, temperature, size, and weight of the RTU.

RS-232 Interface Details

Lists serial communication parameters like baud rate, parity, bits, and stop bits.

Radio Interface Specifications

Details audio output/input, channel busy input, and PTT output specifications.

Radio Modem Specifications

Specifies data rate and signaling method for the radio modem.

Signal Integrity Requirements

Covers required signal strength and probability of false data.

Input;Output (I;O) Specifications

Details capabilities of external inputs and outputs, including types and counts.

RTU Operation and Configuration

General RTU Operation

Explains the two primary tasks of RTUs: reporting changes and responding to commands.

Addressing the RTU

Describes how to assign unique addresses to RTUs using DIP switches.

RTU Configuration Process

Outlines the process and requirements for configuring an RTU for specific applications.

Accessing RTU Program Mode

Details the steps to enter the RTU's programming mode via serial connection.

Prekey Time Configuration

Sets the delay between PTT activation and MSK signaling start.

Channel Busy Detect Settings

Configures how the RTU identifies if the radio channel is in use.

Fail Safe Setup Options

Details RTU behavior under abnormal conditions and communication failure settings.

Store and Forward Feature

Explains the store-and-forward feature for extending radio range.

Digital Input Definition

Covers configuration options for digital inputs, including debounce and status modes.

Digital Output Definition

Details configuration for digital outputs, such as latched or momentary modes.

Analog Input Definition

Explains configuration for analog inputs, including thresholds and sampling rates.

System Operational Limits

Discusses operational limits related to inputs, outputs, and system interfaces.

MODBUS System Setup Guide

MODBUS Option Configuration

Describes the optional MODBUS protocol implementation for controllers and RTUs.

MODBUS System Communication Modes

Explains the two setup methods: Polled-only and Report-by-Exception.

MODBUS Master Requirements

Lists requirements for PC or PLC software to be compatible with the MODBUS system.

Configuring the 1700 Controller for MODBUS

Guides on setting up the Model 1700 controller for MODBUS operation.

Configuring RTUs for MODBUS

Details configuration steps for RTUs when interfaced directly or via a controller.

Configuring Master PC or PLC

Provides general guidelines for configuring master software or PLCs.

Basic MODBUS I;O Addressing

Explains MODBUS nomenclature for I/O addressing and Zetron equivalents.

Using Accumulators and Counters in MODBUS

Discusses configuring masters to access RTU accumulators and counters.

Compatible MODBUS Software Products

Lists compatible third-party software packages for the MODBUS option.

RTU Setup and Installation

RTU Installation Procedures

Covers wall-mounting and enclosure installation instructions for the RTU.

Radio Connection Setup

Details the physical connections and jumper settings for radio interface.

Transmit and Receive Audio Adjustment

Guides on adjusting transmit and receive audio levels for proper radio communication.

Model 1708 Jumpers and I;O

Provides detailed jumper and I/O connector information specific to the Model 1708.

Model 1716 Jumpers and I;O

Provides detailed jumper and I/O connector information specific to the Model 1716.

Local RTU to Model 1700 Controller Connection

Explains how to connect an RTU locally to a Model 1700 controller.

50-Pin Industrial I;O Board Connector

Describes the 50-pin connector for interfacing with industrial I/O boards.

Theory of RTU Operation

Basic Functional Description

Explains the RTU's microprocessor-based architecture and versatility.

RTU Functional Block Diagram

Illustrates the internal components and data flow within the RTU.

Troubleshooting Guide

Troubleshooting Overview

Provides initial steps for troubleshooting and contact information for Zetron support.

RTU Repair Procedures

Cover Removal and Replacement

Instructions on how to safely remove and replace the unit's cover.

Model 1700 Series Enclosure Outline

Provides dimensional drawings and outline for the Model 1700 enclosure.

Model 1700 Series Enclosure Instructions

Detailed instructions for installing the Model 1700 enclosure.

Model 1708 RTU Silkscreen Diagram

Silkscreen diagram showing component layout for Model 1708.

Model 1716 RTU Silkscreen Diagram

Silkscreen diagram showing component layout for Model 1716.

Appendix A: Wireline Communication

Communicating Over Two-Wire Balanced Line (600Ω)

Discusses connecting RTUs over wireline for long-distance data transmission.

Appendix B: Test Programs

Model 1730;1732 Communications and I;O Test Program

Introduces a troubleshooting tool for testing controller and RTU communications.

Starting the Communications Test Program

Explains how to launch the communications and I/O test program.

Setting Communication Test Options

Describes how to configure the test program, including device and port settings.

Using the Poll Menu

Details how to retrieve status and hardware information using the Poll menu.

Using the Set Menu

Explains how to control outputs and change logic registers using the Set menu.

Using the Clear Menu

Outlines how to clear message windows, counters, runtimes, and accumulators.

Glossary of Terms

RTU Definition

Remote Terminal Unit, a stand-alone device for data acquisition and control in the field.

MODBUS Protocol Explained

Industry-standard protocol used for process control, transferring commands and data.

SCADA System Definition

Supervisory Control And Data Acquisition, a system for industrial measurement and control.

Polled-Only System

SCADA system where the master controls all communication; RTUs respond only to polls.

Store and Forward Feature

Feature allowing an RTU to receive and resend messages to extend communication range.

Hysteresis in Measurements

Method to prevent multiple reports when a signal crosses a threshold value.

ZETRON 1708 Specifications

General IconGeneral
BrandZETRON
Model1708
CategoryTouch terminals
LanguageEnglish

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