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Engineering Reference Materials for RS232 RS485 Schematic
  • RS485

    RS485 is almost identical to RS232 except that transmissions are three-way rather than two-way. RS485 is often used in applications where a single controller needs to control multiple devices. Up to 64 devices may be connected with RS485. An enhanced version of RS422, RS485 is compatible

  • Serial Interface (RS232, RS422, RS485)

    Serial interfaces transmit data one bit at a time. Common standards include RS232, RS422, and RS485. The RS232 standard is approved by the Electronic Industries Association (EIA) for connecting serial devices. The device that connects to the interface is called data communication equipment (DCE

  • Eliminate the Risk of RS-485 Data Corruption

    The RS-485 communications standard was introduced in 1983 by the Electronic Industries Alliance (EIA) as a two-wire, half-duplex, multi-drop alternative to the point-to-point RS-232 interface. (Note: RS-485 can also be wired using 4-wires to enable full-duplex communication). RS-485 uses

  • The State of Industrial Serial Communication

    RS-232, RS-422, and RS-485 have a long history in industrial automation. One of Moxa's most experienced engineers discusses the state of these legacy communication standards and how they are integrated in today's industrial communication equipment.

  • Utility Monitoring System at International Airport

    At a new international airport terminal, the equipment that monitored different aspects of airport operation needed to be connected to a control room over different media interfaces including Ethernet, RS-232, RS-422, and RS-485. An industrial communication solution was necessary to incorporate

  • VoIP in Industrial Networks - Implementing QoS for Reliable Voice Over Industrial Ethernet

    For many years, serial interfaces such as current loop, RS-232, and RS-485 have been the preferred methods for industrial communications. Ethernet offers high reliability with the proven ability to adapt to changing environments, especially new types of media (coaxial cable and wireless

Product Announcements for RS232 RS485 Schematic
B+B SmartWorx
Port Powered Two Channel RS232 to RS485 Converter

These port-powered, two channel converters allow your computer to communicate longer distances by converting TD and RD RS-232 lines to RS-485 signals. RS-485 also provides multi-drop capability. All converters feature Automatic Send Data Control which enables the driver when data is present on the RS-232 side. Control of the driver is automatic at speeds up to 115.2 kbps. Converters are powered by the RS-232 port DTR and RTS handshake lines. The unit is powered from the RS-232 data...

B+B SmartWorx
Isolated RS-232 To RS-485 DIN Rail Converter

The 485LDRC9 is an optically isolated RS232 to RS422/485 converter. RS-232 signals interface through a DB9 female connector or a terminal block. RS422/485 signals and power inputs connect to the terminal block. Terminal blocks are arranged to allow easy wiring inside a control panel. Built-in Automatic Send Data Control circuitry allows quick set-up and eliminates the need for external software drivers to control handshake signals. The converter operates on externally sourced 10-30 VDC power...

Glassman Europe, Ltd.
LPC Series - Programmable DC Power Supplies

The LPC series programmable DC power supplies provide stable, variable output voltage and current for a broad range of development and system requirements. Design features include: Universal AC input. High power density, with up to 850 Watts from a half rack 1U chassis. Scalable Analogue Programming. RS232, RS485, USB 2.0, together with Isolated & non-isolated Analogue programming facilities (with optional Ethernet & GPIB). Auxiliary 5V / 15V outputs. Output voltages up to 600Vdc...