{"product_id":"honeywell-mu-tsim12-51303932-426-serial-interface-fta-modbus-i-o-processor","title":"Honeywell MU-TSIM12 51303932-426 Serial Interface FTA Modbus I\/O Processor","description":"\u003cp\u003eThe Honeywell MU-TSIM12, also identified as the MU-TSIM12 Serial Interface FTA Modbus I\/O Processor, provides bidirectional serial communication between the Honeywell APM\/HPM control system and Modbus RTU-compatible field devices. It supports EIA-232 and EIA-485 interfaces, configurable baud rates and parity, and structured data transfer into Boolean, numeric, and string arrays.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\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\u003eMU-TSIM12\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSerial Interface FTA Modbus I\/O Processor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eAPM\/HPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocol\u003c\/td\u003e\n\u003ctd\u003eModbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Interface\u003c\/td\u003e\n\u003ctd\u003eEIA-232 or EIA-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Devices\u003c\/td\u003e\n\u003ctd\u003eMultivendor qualified Modbus-compatible devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDevices per SI\u003c\/td\u003e\n\u003ctd\u003e2 FTAs per SI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDevices per FTA\u003c\/td\u003e\n\u003ctd\u003eUp to 15 devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum EIA-232 Distance\u003c\/td\u003e\n\u003ctd\u003e15 m, 2500 pF maximum cable capacitance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum EIA-485 Distance\u003c\/td\u003e\n\u003ctd\u003e1.2 km (4000 ft.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEIA-485 Drops\u003c\/td\u003e\n\u003ctd\u003e15 maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEIA-485 Common-Mode Operation\u003c\/td\u003e\n\u003ctd\u003e250 VAC RMS continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Mode\u003c\/td\u003e\n\u003ctd\u003eAsynchronous, bidirectional; EIA-485 half-duplex only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelectable Baud Rates\u003c\/td\u003e\n\u003ctd\u003e1200, 2400, 4800, 9600, 19200 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Format\u003c\/td\u003e\n\u003ctd\u003e8 data bits with programmable 9th bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParity\u003c\/td\u003e\n\u003ctd\u003eNone, odd, or even\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStop Bits\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction Codes\u003c\/td\u003e\n\u003ctd\u003e01, 02, 03, 04, 05, 06, 08, 16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMessage Response Timeout\u003c\/td\u003e\n\u003ctd\u003eConfigurable; default 1.5 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntermessage Stall Time\u003c\/td\u003e\n\u003ctd\u003eMinimum 3.5 character times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Quantity per IOP\u003c\/td\u003e\n\u003ctd\u003e16 points per serial channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Types\u003c\/td\u003e\n\u003ctd\u003eBooleans, real numbers, signed integers, ASCII strings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Withstand Capability\u003c\/td\u003e\n\u003ctd\u003eANSI\/IEEE C37.90.1-1978\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eESD Protection\u003c\/td\u003e\n\u003ctd\u003eIEC 801.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Adapter-to-FTA Distance\u003c\/td\u003e\n\u003ctd\u003eInternal cabinet cable or external cable up to 300 m (1000 ft.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eModbus RTU Communication and Data Mapping\u003c\/h3\u003e\n\u003cp\u003eThe MU-TSIM12 supports serial communication with Modbus RTU devices over EIA-232 or EIA-485 physical interfaces. Communication parameters include selectable baud rate and parity, one stop bit, configurable modem control, and configurable device addressing.\u003c\/p\u003e\n\u003cp\u003eSupported function codes include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e01, 02: Read coil and discrete input status.\u003c\/li\u003e\n\u003cli\u003e03, 04: Read holding and input registers.\u003c\/li\u003e\n\u003cli\u003e05, 06: Write single coil and single register.\u003c\/li\u003e\n\u003cli\u003e08: Diagnostics.\u003c\/li\u003e\n\u003cli\u003e16: Write multiple registers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach serial channel provides 16 points organized as arrays in the APMM\/HPMM. Depending on the selected data representation, a point can access 512 Boolean flags, 16 real values or 32 integers, 64 numeric diagnostic-counter values, or character strings in the supported lengths and quantities.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Which physical interfaces are supported by the MU-TSIM12?\u003c\/p\u003e\n\u003cp\u003eA: The interface supports EIA-232 and EIA-485. EIA-232 uses separate transmit, receive, and modem-control signals. EIA-485 uses a two-wire differential data pair and operates in half-duplex mode.\u003c\/p\u003e\n\u003cp\u003eQ: What are the maximum serial cable distances?\u003c\/p\u003e\n\u003cp\u003eA: The maximum EIA-232 distance is 15 m, subject to a maximum cable capacitance of 2500 pF. EIA-485 supports up to 1.2 km (4000 ft.). The external cable between the power adapter and FTA can extend up to 300 m (1000 ft.).\u003c\/p\u003e\n\u003cp\u003eQ: How many Modbus devices can be connected?\u003c\/p\u003e\n\u003cp\u003eA: The documented configuration supports two FTAs per SI and up to 15 devices per FTA. EIA-485 supports a maximum of 15 drops.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the MU-TSIM12 interface selection and confirm that the field device supports Modbus RTU.\u003c\/li\u003e\n\u003cli\u003eConfigure baud rate, parity, device address, and response timeout to match the connected device.\u003c\/li\u003e\n\u003cli\u003eFor EIA-232, observe the specified cable distance and capacitance limits. Verify TXD, RXD, and any required modem-control signal connections.\u003c\/li\u003e\n\u003cli\u003eFor EIA-485, maintain correct differential-pair polarity between Data+(B) and Data-(A). Connect the cable shield and protective ground according to the system grounding design.\u003c\/li\u003e\n\u003cli\u003eRoute serial communication cables separately from high-voltage power and switching conductors where practicable. Avoid ground loops and follow site-specific EMC and grounding requirements.\u003c\/li\u003e\n\u003cli\u003eVerify device addressing and ensure that no more than the specified number of devices is connected to each FTA.\u003c\/li\u003e\n\u003cli\u003eCheck communication diagnostics, response timeouts, and exception reporting after installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":67785138241778,"sku":"MU-TSIM12 51303932-426","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0730\/5589\/5794\/files\/MU-TSIM122.jpg?v=1792377583","url":"https:\/\/www.petrospare.com\/products\/honeywell-mu-tsim12-51303932-426-serial-interface-fta-modbus-i-o-processor","provider":"Petro Spare Industrial Limited","version":"1.0","type":"link"}