Technical Library

Technical Articles
•   RS-422/485 Application Note
•   B&B Converters for the Industrial World
•   Basics of the RS-485 Standard
•   Cable Selection for RS-422 and RS-485 Systems
•   Getting From Here to There: Serial Communications Systems
•   Polarities for Differential Pair Signals (RS-422 and RS-485)
•   Port Powered Serial Converter FAQ
•   Tips for Using Port Powered Converters
•   RS-485 Problem Solver - Trouble Shooting Guide Walks You Step by Step
•   RS-485 Quick Guide - Just the Essentials on a Single Piece of Paper
•   System Design With Port Powered Converters
•   Troubleshooting an RS-232 to RS-485 Interface Converter
•   RS-485 Q&A
•   Industrial Bus Compatibility Chart
•   An RS-485 Tale of Woe

Illustrations
•   RS-422 Converter to 422 Device (Illustration)
•   RS-422 Loopback Connections
•   RS-485 2-Wire Converter to 2-Wire 485 Devices
•   RS-485 4-Wire Converter to 4-Wire 485 Devices
•   RS-485 Star Network With Repeaters
•   RTS Control
•   Send Data Control
•   Using RS-422 to Extend RS-232 Connections
•   4 Wire RS-485 to Fiber Connections - FOSTCDR
•   485OPDR Isolation Between Buildings
•   485 Port Power Powered Converter T/S Flow Chart
•   485LDRC9 Troubleshooting Illustration
•   485OPDRI Switch Illustration

FAQ
•   232/422 Converter Connections for Extending RS-232?
•   485LDRC9 - Extending RS232 Connections
•   How Can I Check My 2-Wire RS-485 Port or Converter To Verify Operation?
•   How Can I Check My 4-Wire RS-485 Port or Converter To Verify Operation?
•   How Can I Check My RS-422 Port or Converter? - Loopback Test
•   RS-422 Connections
•   RS-485 Connections
•   What Terminals are used when connecting the 485LDRC9 for RS-485 or RS-422?
•   Connections for RS-485 or RS-422 to the 4WSD9OTB or 4WSD25OTB Converters?

Technical Articles
•   Options for Adding Serial Ports
•   Tips for Using Port Powered Converters
•   Automatic Serial Data Collection
•   Getting From Here to There: Serial Communications Systems
•   System Design With Port Powered Converters
•   Quick Reference Card - RS-232 DB9/DB25 pinouts/levels ASCII table
•   COM4 Address Conflicts

Illustrations
•   Using RS-422 to Extend RS-232 Connections
•   RS-232 DTE/DCE Cables (includes Loopback & DB9/DB25 Connections)
•   Connector Types (Rear Panel) Desktop

FAQ
•   RS-232 Connections That WORK! - DTE/DCE
•   How Can I Check My RS-232 Port? - Performing A Loopback Test

Technical Articles
•   Data Line Isolation Theory
•   Dataline Surge Protection
•   Isolation: Your Best Investment for Reliability

Illustrations
•   How Optical Isolation Works
•   How Surge Protection Works

Technical Articles
•   The Serial Revolution: Establishing Global Access to Serial Ports
•   Managed Ethernet Switches - Key Features for a Powerful Industrial Network
•   An Introduction to Industrial Ethernet
•   Application Note: Ethernet Extender Performance
•   Industrial Ethernet Basics
•   Ethernet Buzzword Guide
•   10 Commandments of Industrial Ethernet
•   Power Over Ethernet (PoE)
•   Structured Cabling Systems
•   Preventing Network Problems on the Plant Floor with VLANs
•   N-Tron Whitepaper Library

Illustrations
•   Ethernet Cables - RJ45/Colors & Crossover
•   Checking for PoE Voltage

•   Glossary

•   Current Loop Application Note

FAQ
•   How do I connect my Digital Current Loop or RS-232 device to the 232CLDR
•   FAQ - How do I connect the Current Loop Converter to my Current Loop device?
•   How Can I Check My Current Loop Converter To Verify Operation?
•   How Do I Connect the Current Loop Converter To My Current Loop Device?

•   Video: Making USB Reliable in Rugged Applications
•   Video: USB Hub Introduction

Technical Articles
•   The USB (Universal Serial Bus) Solution
•   USB: Adaptable for Industrial Applications?
•   USB Q&A
•   Industrial USB - Bridging the Gap
•   USB Basics

Technical Articles
•   Understanding Data Acquisition - Data That Matters
•   A Beginner's Guide to Data Acquisition Terminology

FAQ
•   DAQ FAQ: Part 1 - Introduction and Digital Inputs
•   DAQ FAQ: Part 2 - Digital Inputs with Counters and Digital Outputs
•   DAQ FAQ: Part 3 - Analog Inputs
•   DAQ FAQ: Part 4 - Analog Outputs

•   Fiber Optics Information

•   An Overview of Fiber Optic Technology

•   Comtest
•   Simpterm (for DOS)

Visual Basic Demo Source Code (requires VB 6.0)
•   Visual Basic 6.0 Demo software for model 232DRIO - .zip
•   Visual Basic 6.0 Demo software for model 232SDA12 - .zip
•   Visual Basic 6.0 Demo software for model 232SDD16 - .zip
•   Visual Basic 6.0 Demo software for model 232SPDA - .zip
•   Visual Basic 6.0 Demo software for model 485SDA12 - .zip
•   Visual Basic 6.0 Demo software for model 485SDD16 - .zip
•   Visual Basic 6.0 Demo software for model UD128A8D - .zip

•   Video: GhostBridge Wireless Ethernet Demonstration

Technical Articles
•   Wireless Antenna Installation Guide
•   10 Commandments of Wireless Communications
•   Everything You Wanted to Know About the 868MHz Radio…but were afraid to ask
•   Wireless Range Estimator
•   Making Wireless Work: Antenna & Cable Selection
•   802.11 for Industrial Applications
•   Stepping up to Wireless?
•   802.11 Basics
•   Wireless Winning Wider Acceptance in Automation - ControlGlobal.com article
•   Industrial Wireless - Selecting a Wireless Technology
•   Industrial Wireless Modems Come of Age
•   Wireless Well Monitoring System
•   Solving Industrial Monitoring Challenges through Wireless I/O

Illustrations
•   Wireless Remote Monitoring/Control

FAQ
•   How Do I Make 2-Wire or 4-Wire RS-485 or RS422 Connections to my ZP Wireless Radio Modems?

•   Parallel Port Explained
•   IP Ratings Explained
•   Newbie's Guide to Industrial PC's
•   Product Certifications Demystified
•   Power Supply Selection Guidelines
•   Site Map