{"product_id":"allen-bradley-1769-ascii-communication-interface-module","title":"Allen-Bradley 1769-ASCII Communication Interface Module","description":"\u003ch2\u003eAllen-Bradley 1769-ASCII Communication Interface Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1769-ASCII\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1769-ASCII\u003c\/strong\u003e Communication Interface Module, operates as a dedicated hardware component for ASCII serial data exchange within CompactLogix and MicroLogix 1500 controller platforms. The module provides two configurable serial communication channels supporting RS-232, RS-422, and RS-485 interfaces.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1769-ASCII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.07 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 62 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e425 mA @ 5 VDC; 2.13 W maximum dissipation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCommunication Interface Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eCompactLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eASCII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Ports\u003c\/td\u003e\n\u003ctd\u003e2 configurable channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Interface\u003c\/td\u003e\n\u003ctd\u003eRS-232, RS-422, RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRS-232 Configuration\u003c\/td\u003e\n\u003ctd\u003e2 full duplex ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRS-422\/RS-485 Configuration\u003c\/td\u003e\n\u003ctd\u003e2 half duplex ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHandshaking\u003c\/td\u003e\n\u003ctd\u003eRTS\/CTS hardware handshaking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e30 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e1.4 A at 24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Words\u003c\/td\u003e\n\u003ctd\u003e108\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration Words\u003c\/td\u003e\n\u003ctd\u003e31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e2.13 W maximum; 7.3 BTU\/hr thermal dissipation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN rail or panel mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Cable\u003c\/td\u003e\n\u003ctd\u003eBelden 8761 shielded cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and Industrial Control Platform Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1769-ASCII module interfaces with CompactLogix controller architectures through the backplane connection and provides serial communication processing for ASCII-based devices. The module supports configurable data exchange using RS-232, RS-422, and RS-485 electrical standards.\u003c\/p\u003e\n\u003cp\u003eCommunication configuration includes transmit and receive data handling, transaction ID transmission from 0 to 255, and status monitoring functions including TX FIFO overflow, RX FIFO overflow, parity errors, handshake errors, and new data flags. The module architecture supports I\/O density scaling within CompactLogix systems by adding serial communication channels without external serial converters.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How many serial communication channels are available on the 1769-ASCII module?\u003cbr\u003eA: The module provides two serial channels. Each channel can be configured for supported ASCII communication through RS-232, RS-422, or RS-485 interfaces.\u003c\/p\u003e\n\u003cp\u003eQ: What type of power connection does the 1769-ASCII module use?\u003cbr\u003eA: The module receives operating power from the controller backplane. The specified power rating is 425 mA at 5 VDC.\u003c\/p\u003e\n\u003cp\u003eQ: Which cable type is recommended for serial communication wiring?\u003cbr\u003eA: A shielded Belden 8761 cable is recommended for serial signal wiring to reduce electrical interference.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1769-ASCII module on the CompactLogix chassis using DIN rail or panel mounting methods according to the controller system installation requirements.\u003c\/p\u003e\n\u003cp\u003eUse shielded serial communication cables and maintain separation between communication wiring and high-voltage power conductors. Connect cable shields following the controller grounding requirements to minimize electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003eVerify RS-232, RS-422, or RS-485 wiring configuration before commissioning. Confirm communication parameters, handshaking settings, and ASCII data format compatibility between the module and connected serial devices.\u003c\/p\u003e\n\u003cp\u003eEnsure the module is installed within the specified operating temperature range and that the backplane power capacity is sufficient for the installed CompactLogix configuration.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43661969653850,"sku":"1769-ASCII","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1769-ASCII2.jpg?v=1784098753","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1769-ascii-communication-interface-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}