ASYNC RS232 TO RS422/485 INTERFACE CONVERTER - DB9 TO TERMINAL BLOCK, OPTO-ISOLA

Product image

Key Features

Transmit data up to 115 kbps or at distancesup to 4000 ft.
Operates in point to point or multipoint applications
Operates 2-wire half-duplex or 4-wire half- or full-duplex.
async (data leads) only.
Up to 32 RS485 devices can be attached to create a large multi-drop network
The RS485 driver is automatically enabled during each spacing state on the RS232 side.

Manuals & Resources

MANUAL User Manual › DATASHEET Product Datasheet › BROCHURE Manufacturer Brochure › MANUAL Assembly Instructions › WARRANTY Warranty Information › DATASHEET Product Fiche › GUIDE Energy Guide › SAFETY Safety Data Sheet › SAFETY Safety Data Sheet (FR) › SAFETY COSHH Sheet › TOUR Product Tour › 360 360° Product View ›

BLACK BOX Transceivers/Media Converters

ASYNC RS232 TO RS422/485 INTERFACE CONVERTER - DB9 TO TERMINAL BLOCK, OPTO-ISOLA

Mfr # IC821A SKU 2889660 UPC 822088100348

$164.38 MSRP $202.98 Save 19%

Regular price saves you $38.60 against MSRP.

Available

Product Overview

ASYNC RS232 TO RS422/485 INTERFACE CONVERTER - DB9 TO TERMINAL BLOCK, OPTO-ISOLA

Black Box Universal RS-232RS-422/485 Converter with Opto-Isolation - ser
Black Box Async RS232 to RS422/485 Interface Converter - DB9 to Terminal Block - 1 x DB-9 RS-232 , 1 x Terminal Block - External
Black Box Async RS232 to RS422/485 Interface Converter - DB9 to Terminal Block
1 x DB-9 RS-232 , 1 x Terminal Block - External

Technical Specifications

Product Type	Transceiver/Media Converter
Manufacturer Part Number	IC821A
Power Source	Power Supply
Limited Warranty	1 Year
Form Factor	External
Manufacturer	Black Box Corporation
Product Model	IC821A
Product Name	Universal RS-232 to RS-422/485 Converter
Brand Name	Black Box
Plug/Connector Type	Terminal Block
Country of Origin	United States
Height	1.7"
Width	0.9"
Depth	3.9"
Environmentally Friendly	Yes
Product Condition	New
Total Number of Ports	2
TAA Compliant	Yes

Marketing Information

The BLACK BOX® Universal RS-232 to RS-422/485 Converter with Opto-Isolation isolates and converts RS-232 signals into RS-422/RS-485 signals and vice versa. Unlike other converters, external software is not required to control data flow. The RS-232 input is wired for DCE through a DB9 female connector, and RS-422/RS-485 signals are interfaced through a removable terminal block. To supply external power to the terminal block, you need our 120-VAC/12-VDC Wallmount Power Supply (PS1003).

For RS-232, the connection requires RD, TD, and Signal Ground.

In RS-422 mode, the driver is always enabled for full-duplex communications. A twisted pair is required for transmit, and a twisted pair is also required to receive. A ground reference wire is also needed. Switch settings are Switch 1: RS-422; Switch 2: Echo On; Switches 3 and 4: 4 Wire.

In both RS-485 modes, the RS-485 driver is automatically enabled during each space state by the presence of an RS-232 signal. When the RS-232 data is in a mark or idle state, the RS-485 driver is disabled and the RS-485 data lines are held in a mark state by the bias provided by a 4.7-ohm resistor; the value of this resistor may need to be changed, depending on the termination you use.

To connect to several RS-485 devices with minimal wire, select the unit's 2-wire, half-duplex RS-485 mode. When data is requested, the addressed device transmits and then reverts back to receive status. Switch settings for this mode are Switch 1: RS-485; Switch 2: Echo Off; Switches 3 and 4: 2 Wire.

For 4-wire master/slave circuits, select the unit's 4-wire, full-duplex RS-485 mode. In this mode, addressed devices can receive data while transmitting data from a previous request. When used as a master in a single-master system, Switch 1 may be selected because the unit is the only transmitter in the system. When used as an RS-485 slave, the RS-232 device must provide addressability. Biasing in a master/slave system is provided by the end-of-line slave. Switch settings for this mode are Switch 1: RS-485; Switch 2: Echo On; Switches 3 and 4: 4 Wire.