RS-232 to RS-422/485 Converters - ULI-224 Series

ULI-224 series converts RS-232 to RS-422/485 signals and extends RS-232 signals up to 1.2 km. They are port-powered or use external power supplies.

ADAM-4520

Most industrial computer systems come with standard RS-232 serial ports. Though widely accepted, RS-232 has limited transmission speed, range, and networking capabilities. The RS-422 and RS-485 standards overcome these limitations by using differential voltage lines for data and control signals. The ADAM-4520/4522 converter lets you take advantage of RS-422 and RS-485 on systems originally equipped with RS-232. It transparently converts RS-232 signals into isolated RS-422 or RS-485 signals. You do not need to change your PC's hardware or your software. The ADAM-4520 lets you easily build an industrial grade, long distance communication system with standard PC hardware. It extends the communication distance by 4000 ft. (1200 m) or increases the maximum number of connected nodes by 32.
ADAM-4520A

The ADAM-4520A has an enhanced ruggedized design with wide temperature operation, and wide-range power inputs. It also provides up to 3,000 VDC isolation protection. With proven industrial-grade features, ADAM-4520A ensures reliable and stable operation in most harsh environments.
ADAM-4520A-A40

The ADAM-4520A-A40 limited edition has an enhanced ruggedized design with wide temperature operation, and wide-range power inputs. It also provides up to 3,000 VDC isolation protection. With industrial-grade features, the product ensures reliable and stable operation in most harsh environments.
ADAM-4521

The ADAM-4521 is an intelligent RS-422/485 to RS-232 converter specifically designed to connect RS-422/485 devices to an RS-232 network. RS-232 is the most common transmission standard. Although widely available on most computer systems, measurement equipment, PLCs, and industrial devices, its transmission speed, communication distance, and especially networking capability are limited due to unbalanced transmission. The ADAM-4521 addressable converter solves this problem and lets you easily build up an RS-485 network with your RS-232 devices by assigning each one an address for easier communication.
BB-485BAT3

Three Versatile Powering Options Model 485BAT3 features power versatility, making it perfect for field testing solutions. It can be powered in three ways: batteries, port powered, or external power supply (not included, sold separately). Use the battery power option with a low power RS-232 port (found on many laptops) or no handshake lines or when it is inconvenient to use a power supply. Model 485BAT3 will draw as much power as possible from the RS-232 port and get any additional current necessary from the batteries. If you have a full power-port and all your handshake lines, turn off the battery switch. This allows you to run full port-powering and saves the batteries for emergencies. Note: The battery On/Off switch conserves battery life. It does not turn on and off all power to the unit. Lastly, a stripped and tinned 12VDC external power supply may be used. Simply attach it to the terminal blocks and plug it in. Model 485BAT3 converts unbalanced RS-232 signals to balanced RS-...
BB-485DRCI

BB-485DRCi converts RS232 to RS422 for greater range or to RS485 for greater range and multi-drop. RS422/485 line surge suppression. DIP switch configuration. Automatic Send Data Control – no software control of handshake signals in RS485 mode. Removable TBs for power and RS422/485 signals.
BB-485DRCI-PH

Model BB-485DRCI-PH is our premium heavy industrial RS-232 to RS- 422/485 isolated converter. Designed for rugged industrial environments, it has been put through some of the most exacting compliance tests in the industry. Meeting the requirements of IEC 61850-3 and IEEE 1613, it is suitable for installation in electrical substations. These specifications are more stringent than the NEMA TS1/TS2 requirements for transportation applications. Powerful isolation on both data ports protects your equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third degree of protection. An external power supply is required (not included, sold separately). Packaged in a rugged IP30 metal case, it converts unbalanced, full or half-duplex RS-232 signals to balanced RS-422/485 signals. Featuring Automatic Send Data Control circuitry, it does not require special software control of handshake signals in RS-485 mode.
BB-485LDRC9

This optically isolated RS232 to RS422/485 converter features Automatic Send Data Control - no software drivers needed to control handshake lines. RS232 signals on DB9 female connector or terminal block. RS422/485 signals and power inputs connect to terminal blocks. External power required.
BB-4WSD25OTB

Model 4WSD25OTB converts RS-232 to RS-422 or RS-485 (2 or 4-wire). 2,000 Volts two-way optical isolation protects devices from power surges, spikes and ground loops in harsh electrical environments. This in-line converter supports distances up to 1,200 m (4000 ft.) and data rates up to 115.2 kbps. Switchable modes support 2-wire RS-485, 4-wire RS-485, and full-duplex RS-422. DB9 female RS-232 input. Removable terminal blocks for RS-422/485 and external power make wiring easy. Accepts external power from 10-48 VDC from an industrial power source or plug in power supply (not included, sold separately).
BB-4WSD9OTB

Model 4WSD9OTB converts RS-232 to RS-422 or RS-485 (2 or 4-wire). 2,000 Volts two-way optical isolation protects devices from power surges, spikes and ground loops in harsh electrical environments. This in-line converter supports distances up to 1,200 m (4000 ft.) and data rates up to 115.2 kbps. Switchable modes support 2-wire RS-485, 4-wire RS-485, and full-duplex RS-422. DB9 female RS-232 input. Removable terminal blocks for RS-422/485 and external power make wiring easy. Accepts external power from 10-48 VDC from an industrial power source or plug in power supply (not included, sold separately).
BB-4WSD9R

BB-4WSD9R (ULI-224D) is a universal serial converter that facilitates RS-232 to RS-422/RS-485 conversion using either port-power or an external supply. It features Automatic Send Data Control, eliminating the need for handshaking. Operation is configured via a dipswitch.
BB-4WSD9TB

BB-4WSD9TB (ULI-224T) is a universal serial converter that converts RS-232 to RS-422/RS-485 using port power or an external supply. It features a terminal block RS-485 connector and Automatic Send Data Control, eliminating the need for handshaking. Operation is configured via a dipswitch.
BB-SCP211-DFTB3

The BB-SCP211-DFTB3 (ULI-224TH) serial converter is compact and rugged, designed and tested to meet heavy industrial EMC standards. Its bit-wise enabled circuitry automatically detects the character time-out, eliminating the need to set DIP switches for the baud rate.
BB-SCP311T-DFTB3

Model SCP311T-DFTB3 serial converter is compact and rugged, designed and tested to meet heavy industrial EMC standards. The RS-232 signal is connected through a female DB9 connector. The RS-422/485 (2-wire and 4-wire) signal is connected through a removable terminal block, making wiring easy. Power is connected through a two-position, removable terminal block. A 10-30VDC external power source is required (not included, sold separately). Bit-wise enabled circuitry automatically detects the character time-out eliminating the need to set DIP switches for the baud rate.Model SCP311T-DFTB3 offers 2 kV isolation plus a -40 to 80°C wide operating temperature. This rugged model is an excellent investment for protecting your expensive control equipment.

RS-232 to RS-422/485 Converters - ULI-224 Series

The ADAM-4520A has an enhanced ruggedized design with wide temperature operation, and wide-range power inputs. It also provides up to 3,000 VDC isolation protection. With proven industrial-grade features, ADAM-4520A ensures reliable and stable operation in most harsh environments.

The ADAM-4520A-A40 limited edition has an enhanced ruggedized design with wide temperature operation, and wide-range power inputs. It also provides up to 3,000 VDC isolation protection. With industrial-grade features, the product ensures reliable and stable operation in most harsh environments.

BB-485DRCi converts RS232 to RS422 for greater range or to RS485 for greater range and multi-drop. RS422/485 line surge suppression. DIP switch configuration. Automatic Send Data Control – no software control of handshake signals in RS485 mode. Removable TBs for power and RS422/485 signals.

This optically isolated RS232 to RS422/485 converter features Automatic Send Data Control - no software drivers needed to control handshake lines. RS232 signals on DB9 female connector or terminal block. RS422/485 signals and power inputs connect to terminal blocks. External power required.

BB-4WSD9R (ULI-224D) is a universal serial converter that facilitates RS-232 to RS-422/RS-485 conversion using either port-power or an external supply. It features Automatic Send Data Control, eliminating the need for handshaking. Operation is configured via a dipswitch.

BB-4WSD9TB (ULI-224T) is a universal serial converter that converts RS-232 to RS-422/RS-485 using port power or an external supply. It features a terminal block RS-485 connector and Automatic Send Data Control, eliminating the need for handshaking. Operation is configured via a dipswitch.

The BB-SCP211-DFTB3 (ULI-224TH) serial converter is compact and rugged, designed and tested to meet heavy industrial EMC standards. Its bit-wise enabled circuitry automatically detects the character time-out, eliminating the need to set DIP switches for the baud rate.