{"product_id":"yokogawa-ip91-a-communication-module","title":"Yokogawa IP91*A Communication Module","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa IP91*A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eIP91\u003c\/strong\u003e Communication Module, operates as a dedicated hardware component for multi-protocol serial communication and data packet translation within Yokogawa DCS and SCADA networks.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eCode Element\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification \/ Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIP91\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase model designation for industrial serial communication module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e*\u003cstrong\u003eA\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003eStyle code Revision A specifying terminal pin layout and physical enclosure revision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003eIP91*A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eCompact panel\/slot mount module format\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 deg C to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e12-24 VDC continuous operating supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eCommunication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Protocols\u003c\/td\u003e\n\u003ctd\u003eModbus RTU, ASCII, Binary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Interface\u003c\/td\u003e\n\u003ctd\u003eRS-232C \/ RS-485 configurable communication lines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Integration\u003c\/td\u003e\n\u003ctd\u003eYokogawa DCS, SCADA, and field instrument networks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation and Multi-Protocol Serial Conversion\u003c\/h3\u003e\n\u003cp\u003eThe IP91*A module converts raw serial field communications, including Modbus RTU, ASCII, and Binary protocols, into digitized backplane data streams for control system processing. Built-in channel-to-channel galvanic isolation shields internal processing circuits from ground loops and common-mode noise across RS-232C\/RS-485 field loops. This isolation maintains signal integrity during high-baud-rate data transmission between field instruments and central DCS controllers.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How are communication protocol selections configured on the IP91*A module?\u003c\/p\u003e\n\u003cp\u003eA: Protocol selection between Modbus RTU, ASCII, and Binary modes is established via internal DIP switch configuration settings and system engineering software initialization.\u003c\/p\u003e\n\u003cp\u003eQ: Does the IP91*A module tolerate live insertion or removal during active host operation?\u003c\/p\u003e\n\u003cp\u003eA: Module replacement should only be performed when the module power terminal is de-energized or when the connected communication bus is set to an inactive state to prevent frame corruption on the host network.\u003c\/p\u003e\n\u003cp\u003eQ: What ground potential differences can the internal isolation barrier withstand?\u003c\/p\u003e\n\u003cp\u003eA: The internal galvanic isolation barrier provides dielectric protection up to 1500 VAC between field serial lines and the internal logic power ground.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Secure the module on a standard 35 mm DIN rail or designated chassis mounting slot. Verify that side retaining latches lock fully to prevent physical dislocation under mechanical vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Wiring:\u003c\/strong\u003e Connect a regulated 12-24 VDC auxiliary power supply to the designated power terminals. Verify correct voltage polarity before energizing the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Cabling and Shielding:\u003c\/strong\u003e Route serial communication lines using shielded twisted-pair cables. Terminate cable shields to the cabinet functional earth (FE) bus at a single point to prevent ground loop currents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine Termination:\u003c\/strong\u003e Ensure proper 120 ohm bus termination resistors are enabled at both physical ends of RS-485 communication loops to eliminate signal reflections over long cable runs.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":53280582467893,"sku":"IP91*A","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/IP91A.png?v=1786674640","url":"https:\/\/www.5gplc.com\/products\/yokogawa-ip91-a-communication-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}