{"product_id":"black-box-ic821a-serial-converterrepeaterisolator-rs-232-rs-422485-ic821a","title":"Black Box IC821A serial converter\/repeater\/isolator RS-232 RS-422\/485","description":"\u003cstyle\u003etable.generic tr th {background: #eee;}\u003c\/style\u003eUniversal RS-232 to RS-422\/485 Converter with optional Opto-Isolation\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConvert RS-232 to 4-wire RS-422 or to 2- or 4-wire RS-485.\u003c\/li\u003e\n\u003cli\u003eEnable you to select RS-485 2-wire half-duplex or RS-485 4-wire full-duplex operation.\u003c\/li\u003e\n\u003cli\u003eSelectable RS-422 operation with transmit and receive always enabled.\u003c\/li\u003e\n\u003cli\u003eAutomatic RS-485 driver control, so it works without any special programming for handshaking signals.\u003c\/li\u003e\n\u003cli\u003eNo external power is required if two RS-232 output handshake lines are available.\u003c\/li\u003e\n\u003cli\u003eUniversal RS-232 to RS-422\/485 Converter\u003c\/li\u003e\n\u003cli\u003eBidirectional data conversion.\u003c\/li\u003e\n\u003cli\u003eEnables transmitter from RS-232 TD signal and receiver when not transmitting.\u003c\/li\u003e\n\u003cli\u003eSet operating mode with four switches.\u003c\/li\u003e\n\u003cli\u003eConverts using either port power or power from an external 12VDC power supply (not included).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDescription\u003c\/h2\u003e\u003cb\u003eQuick Facts\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e- Convert RS-232 to 4-wire RS-422 or to 2- or 4-wire RS-485.\u003cbr\u003e- Features 2000-VAC isolation.\u003cbr\u003e- RoHS compliant.\u003cbr\u003e- Selectable RS-422 operation.\u003cbr\u003e- Select RS-485 for 2-wire half-duplex or 4-wire full-duplex.\u003cbr\u003e- Auto RS-485 driver control.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFurther Details\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe 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).\u003cbr\u003e\u003cbr\u003eFor RS-232, the connection requires RD, TD, and Signal Ground.\u003cbr\u003e\u003cbr\u003eIn 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 for 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.\u003cbr\u003e\u003cbr\u003eIn 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.\u003cbr\u003e\u003cbr\u003eTo 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.\u003cbr\u003e\u003cbr\u003eFor 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.\u003cbr\u003e\u003cbr\u003eNOTE: Power Supply (PS1003) is not included, but is required.\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable class=\"generic\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" class=\"text-left\"\u003eTechnical details\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial ports quantity\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput interface\u003c\/td\u003e\n\u003ctd\u003eRS-422\/485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHost interface\u003c\/td\u003e\n\u003ctd\u003eRS-232\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" class=\"text-left\"\u003eWeight \u0026amp; dimensions\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (WxDxH)\u003c\/td\u003e\n\u003ctd\u003e0.906 x 3.9 x 1.69\" (23 x 99 x 43 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" class=\"text-left\"\u003ePower\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput voltage\u003c\/td\u003e\n\u003ctd\u003e10 - 48 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput current\u003c\/td\u003e\n\u003ctd\u003e0.028 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Black Box","offers":[{"title":"Default Title","offer_id":47280821928189,"sku":"IC821A","price":180.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0860\/6205\/files\/BunneFHszECPdqAC_t9Ocg.c-m.jpg?v=1788623110","url":"https:\/\/buyitsolutions.com\/products\/black-box-ic821a-serial-converterrepeaterisolator-rs-232-rs-422485-ic821a","provider":"Buy IT Solutions","version":"1.0","type":"link"}