Moxa Technologies CP-114 Series user manual RS-485 Programming

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Serial Programming Tools

RS-485 Programming

If you intend to do RS-485 communication with Industio CP-114 Series, please follow the RS-485 programming guide below and also refer to the chapter, “Connection Cable and Cable Wiring”, for more RS-485 operation details.

The Industio CP-114 Series supports only 2-wire half-duplex RS-485 communication. Data+/- pins are served for both data transmitting and receiving, depending on the mode selected: either Automatic Data Direction Control (ADDC) or By RTS mode.

Automatic Data Direction Control Mode

Automatic Data Direction Control scheme is the best solutions for RS-485 applications. The data mode selection jumper for the port should be set to Left position, to be able to use Automatic Data Direction Control Mode.

Under this mode, no extra code is required to control the data transferring (data transmitting and receiving), which is automatically managed with the intelligent hardware mechanism. That is, RS-485 programming in this mode is just as simple as RS-232/RS-422 programming.

By RTS Mode

If the data mode selection jumper for the port is set to Right position, By RTS mode is used. The port is ready for transmitting data if RTS signal is asserted and ready for receiving data if RTS signal is not asserted.

RTS scheme is a traditional way and suitable for most system, including Windows NT , Windows 95/98 and DOS, that permits RTS control from application programs. This mode should be compatible with most of the already-made RS-485 applications.

How to transmit and receive data for Windows NT, 95/98 & DOS

We recommend you to configure Industio CP-114 Series ports as follows in order to acquire precise timing control in RS-485 2-wire transmission.

Industio CP-114 User's Manual 4-7

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Contents Moxa Technical Support Fourth Edition, NovemberDisclaimer Industio CP-114 Series User’s ManualCopyright Notice TrademarksFollowing services are provided Moxa Internet ServicesAbout This Manual Table of Contents Page Overview IntroductionSurge/Isolation Protection FeaturesOperating System Support Moxa Serial Comm ToolsInstallation Guide Check ListIntroduction Page First Thing to Do Interface Settings Hardware InstallationValid if JP5/6 is Left and S1 is on Connecting the Fan-out CableSoftware Installation Installing DriverWindows NT Page Software Installation Port NumberRx Fifo Trigger Tx Fifo Size Configuring Board and Port Removing Driver Windows 95/98First Time Driver Installation Stage Page Windows Port Configuration Stage Port Number Board and Port Ready Stage Configuring Board and Port Updating Driver Removing Driver DOS Driver Setup Page TxD buf size RxD buf size F5 Group edit Loading Driver PComm Installation Serial Programming ToolsPComm Programming Library Utilities Diagnostic for Moxa boards onlyPage Terminal Emulator Serial Programming Tools Installing API-232Diagnose Data ScopeRS-485 Programming How to transmit and receive data for Windows NT, 95/98 & DOSSolution RS-232 Cable Wiring Connection Cable and Cable WiringDTE Device DCE Device Connection Cable and Cable WiringRS-422 Point-to-point RS-422 Broadcasting RS-422 Cable WiringRS-485 Cable Wiring Impedance Matching and Termination Resistors For RS-485 Mode DB37 ConnectorFor RS-232 Mode For RS-422 ModePage Software Causes and Solutions TroubleshootingGeneral Troubleshooting Hardware causes and solutionsWindows NT system panic blue screen Specification Technical ReferenceUart 16C550C Page Customer name Company TelFax EmailDate Industio CP-114 SeriesReturn Procedure Revision History

CP-114 Series specifications

Moxa Technologies CP-114 Series is a highly regarded line of serial device servers designed to enhance connectivity and communication in industrial automation and network applications. These devices serve as reliable interfaces for connecting serial devices to Ethernet networks, allowing for seamless integration of legacy serial devices into modern IP-based environments.

One of the main features of the CP-114 Series is its support for multiple serial ports. The series typically includes models that offer four RS-232/422/485 serial ports, enabling effective data transmission from numerous devices simultaneously. This multi-port configuration is particularly useful in environments where multiple legacy devices need to be connected and monitored through a single network interface.

The CP-114 Series excels in its versatility, supporting various serial communication modes including standard RS-232, as well as the more robust RS-422 and RS-485 protocols. This feature allows users to accommodate a wide range of device types, from simple sensors to complex machinery, providing flexibility in deployment across diverse applications.

Another significant characteristic of this series is its robust construction. Designed for industrial use, CP-114 devices are built to withstand harsh environments, featuring high tolerance to temperature variations, electrical noise, and dust. They often come with options for redundant power inputs and protective mechanisms against over-voltage and surge, ensuring reliable operation even in challenging settings.

The integration capabilities of the CP-114 Series are further enhanced by Moxa's proprietary technologies. The devices support a range of network protocols, including TCP/IP and UDP, enabling easy setup and configuration. Additionally, the series is compatible with various operating systems, allowing for broad adoption in different network environments.

Security is another crucial aspect of the CP-114 Series, with features such as device authentication and secure data transmission to safeguard sensitive information. This makes the series suitable for applications in sectors that require high levels of data integrity and security, including transportation, healthcare, and energy management.

Overall, Moxa Technologies CP-114 Series stands out for its robust design, versatile connectivity options, and advanced integration features. With its ability to bridge traditional serial devices with modern network infrastructures, it plays a vital role in enhancing operational efficiency and flexibility in various industrial applications.