{"product_id":"honeywell-s8-1yrexw-communication-module","title":"Honeywell S8-1YREXW Communication Module","description":"\u003cdiv class=\"qk-md-paragraph qk-md-has-multi-modal\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell S8-1YREXW\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eS8-1YREXW\u003c\/strong\u003e Communication Module, operates as a dedicated hardware component for serial data translation and multi-node networking within Honeywell controller architectures. It establishes serial fieldbus interfaces between primary controllers, supervisory computers, and third-party automation systems, executing bidirectional polling and event-driven data packet exchange across serial links.\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\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\u003eS8-1YREXW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.85 kg (Shipping Weight: 1.50 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e145 mm x 100 mm x 45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC bus powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eCommunication Interface Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Protocols\u003c\/td\u003e\n\u003ctd\u003eRS-232, RS-422, RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Baud Rate\u003c\/td\u003e\n\u003ctd\u003eUp to 38,400 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Node Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 32 network nodes per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Field Networks\u003c\/td\u003e\n\u003ctd\u003eModbus, BACnet, LON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol Integration and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe S8-1YREXW provides continuous serial protocol conversion while maintaining galvanic channel-to-channel isolation between serial communication lines and internal backplane logic. This prevents high-voltage common-mode spikes, ground loops, and electrical noise from interfering with system buses. While handling serial networks like Modbus and BACnet, the module coexists within control enclosures containing analog modules handling 4-20 mA HART loop protocol instruments and temperature sensors with cold junction compensation (CJC), preserving data link integrity without introducing high-frequency cross-talk into analog loops.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the S8-1YREXW support remote firmware updates over the network?\u003c\/p\u003e\n\u003cp\u003eA: Yes. Firmware upgrades can be executed remotely over the host controller interface without removing the module from its backplane or DIN-rail mounting base.\u003c\/p\u003e\n\u003cp\u003eQ: How many RS-485 devices can be connected to a single S8-1YREXW module port?\u003c\/p\u003e\n\u003cp\u003eA: The onboard transceiver driver supports up to 32 standard unit load nodes on a single multi-drop serial bus segment without requiring external signal repeaters.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect all 24 VDC power sources feeding the mounting rack before seating the module to avoid transient electrical arcs.\u003c\/li\u003e\n\u003cli\u003eMount the S8-1YREXW onto the standard DIN-rail channel or backplane connector until the locking tab snaps into position.\u003c\/li\u003e\n\u003cli\u003eWire RS-232, RS-422, or RS-485 serial communication cables using shielded twisted-pair conductors.\u003c\/li\u003e\n\u003cli\u003eTerminate long RS-485 bus runs by placing a 120-ohm termination resistor across the differential signal lines at the physical end nodes.\u003c\/li\u003e\n\u003cli\u003eConnect the cable shield drain wire directly to the cabinet functional earth (FE) terminal rail to maximize noise immunity.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52703011504408,"sku":"S8-1YREXW","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/CC-PUIO01_Cocoai_01b3a39a-5016-4df6-aca6-cdeb25bd4995.png?v=1789719109","url":"https:\/\/www.innoplcsync.com\/products\/honeywell-s8-1yrexw-communication-module","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}