{"product_id":"novus-digirail-connect-dmix-ethernet-io-module-8di-4-relay","title":"Novus DigiRail Connect DMIX | Ethernet IO Module Modbus TCP\/RTU (8DI \/ 4 Relay)","description":"\u003cp\u003eThe \u003cstrong\u003eNovus DigiRail Connect DMIX 8DI \/ 4 Relay\u003c\/strong\u003e (8811612440) adds 8 digital inputs and 4 relay outputs to almost any PLC, SCADA or data logging system, over Ethernet (Modbus TCP) or RS485 (Modbus RTU). The relays give volt-free contacts for switching contactor coils, alarms, valves and other AC or DC loads up to 250Vac, while the inputs accept PNP, NPN or dry contact signals and can be configured as pulse counters.\u003c\/p\u003e\n\u003cp\u003eEvery DigiRail Connect model has Ethernet, RS485 and Micro USB on board. It works as a Modbus RTU slave on an existing RS485 network or as a Modbus TCP server on Ethernet, and can act as a transparent Modbus TCP to RTU gateway, so an Ethernet PLC or SCADA system can read RS485 instruments wired to its terminals with no register mapping. Configuration and I\/O testing use free Novus NXperience software over USB.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLead time:\u003c\/strong\u003e made to order by Novus, typically 1–2 weeks to dispatch.\u003c\/p\u003e\n\u003ch3\u003eDigiRail Connect Range\u003c\/h3\u003e\n\u003cp\u003eAll four DigiRail Connect models share the same Ethernet\/RS485 hardware and software. Choose by the I\/O mix you need:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.production-automation.co.uk\/products\/novus-digirail-connect-dmix-ethernet-io-module-8di-8do\" style=\"color: #0000ff; font-weight:bold;\"\u003eDMIX 8DI \/ 8DO (8811612420)\u003c\/a\u003e\u003c\/strong\u003e — 8 digital inputs, 8 PNP transistor outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDMIX 8DI \/ 4 Relay (8811612440)\u003c\/strong\u003e — this model: 8 digital inputs, 4 relay outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.production-automation.co.uk\/products\/novus-digirail-connect-ramix-ethernet-io-module-2ai-2ao-4di-3do\" style=\"color: #0000ff; font-weight:bold;\"\u003eRAMIX 2AI \/ 2AO \/ 4DI \/ 3DO (8811611420)\u003c\/a\u003e\u003c\/strong\u003e — 2 universal analogue inputs, 2 analogue outputs, 4 digital inputs, 3 PNP outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.production-automation.co.uk\/products\/novus-digirail-connect-ramix-ethernet-io-module-2ai-2ao-4di-2-relay\" style=\"color: #0000ff; font-weight:bold;\"\u003eRAMIX 2AI \/ 2AO \/ 4DI \/ 2 Relay (8811611440)\u003c\/a\u003e\u003c\/strong\u003e — as above with 2 relay outputs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOnly need analogue inputs on RS485? The lower-cost \u003cstrong\u003e\u003ca href=\"https:\/\/www.production-automation.co.uk\/products\/novus-digirail-2a-analogue-input-module-modbus-rs485\" style=\"color: #0000ff; font-weight:bold;\"\u003eNovus DigiRail-2A\u003c\/a\u003e\u003c\/strong\u003e converts two thermocouple, Pt100, mV, V or mA signals to Modbus RTU.\u003c\/p\u003e\n\u003cp\u003e✅ \u003cstrong\u003e\u003ca href=\"\/fr\/pages\/warranty\" style=\"color: #0000ff; font-weight:bold;\"\u003e3 Year Manufacturer Warranty\u003c\/a\u003e\u003c\/strong\u003e — backed by our UK-based technical support\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0501\/5794\/5002\/files\/PDF_32_480x480.png?v=1644302486\" alt=\"PDF\" width=\"32\" height=\"32\"\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0501\/5794\/5002\/files\/ethernet_io_module_digirailconnect_20191010_fl_en.pdf?v=1707947248\" title=\"Novus DigiRail Connect Datasheet Download\" style=\"color: #0000ff; font-weight:bold;\"\u003eNovus DigiRail Connect Datasheet Download\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0501\/5794\/5002\/files\/PDF_32_480x480.png?v=1644302486\" alt=\"PDF\" width=\"32\" height=\"32\"\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0501\/5794\/5002\/files\/manual_digirail_connect_v10x_h_en.pdf?v=1707946946\" title=\"Novus DigiRail Connect Manual Download\" style=\"color: #0000ff; font-weight:bold;\"\u003eNovus DigiRail Connect Manual Download\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Details\u003c\/h3\u003e\n\u003cp\u003eOrder code: 8811612440 (DigiRail Connect DMIX 8DI \/ 4RL ETH)\u003c\/p\u003e\n\u003cp\u003eDigital inputs: 8, PNP, NPN or dry contact, configurable counter function\u003c\/p\u003e\n\u003cp\u003eRelay outputs: 4, switching voltage up to 250Vac, resistive loads (see manual for per-channel current rating)\u003c\/p\u003e\n\u003cp\u003eCommunication: Ethernet 10\/100 Mb\/s (IEEE 802.3u), RS485, Micro USB\u003c\/p\u003e\n\u003cp\u003eProtocols: Modbus TCP server, Modbus RTU slave, transparent Modbus TCP to RTU gateway\u003c\/p\u003e\n\u003cp\u003eConfiguration software: Novus NXperience (free, via USB)\u003c\/p\u003e\n\u003cp\u003ePower supply: 10-36 Vdc, 5W max (20mA typical)\u003c\/p\u003e\n\u003cp\u003eOperating conditions: -20 to 60°C, 5-95% RH non-condensing\u003c\/p\u003e\n\u003cp\u003eEnclosure: ABS+PC, 35mm DIN rail mounting\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eShould I choose this relay model or the DMIX 8DI \/ 8DO?\u003c\/strong\u003e\u003cbr\u003eChoose this model when you need volt-free contacts or want to switch AC loads directly. The 8DO model has more outputs and PNP transistor switching, which suits PLC-level DC signals and fast pulsing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the relays switch a motor or heater directly?\u003c\/strong\u003e\u003cbr\u003eThe relays are rated for resistive loads at up to 250Vac. For motors, heaters or large inductive loads, use a relay to drive a contactor coil such as the \u003cstrong\u003e\u003ca href=\"https:\/\/www.production-automation.co.uk\/products\/emas-hn0910nue-contactor-9a-4kw-230v-coil-1-n-o-aux\" style=\"color: #0000ff; font-weight:bold;\"\u003eEMAS HN0910NUE\u003c\/a\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the digital inputs count pulses?\u003c\/strong\u003e\u003cbr\u003eYes. Each input can be configured as a counter in NXperience, which suits flow meter pulses, production counts and run-hour monitoring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if communication is lost?\u003c\/strong\u003e\u003cbr\u003eA configurable watchdog drives the relays to a defined safe state if the Modbus master stops communicating.\u003c\/p\u003e\n\u003ch3\u003eIndustry Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump \u0026amp; fan control\u003c\/strong\u003e — switches contactor coils from SCADA or a PLC over Ethernet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm \u0026amp; status signalling\u003c\/strong\u003e — drives beacons and sounders while reading alarm and run contacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote plant room I\/O\u003c\/strong\u003e — brings distant status and control points onto an existing Modbus network.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Should I choose this relay model or the DMIX 8DI \/ 8DO?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Choose this model when you need volt-free contacts or want to switch AC loads directly. The 8DO model has more outputs and PNP transistor switching, which suits PLC-level DC signals and fast pulsing.\"}},{\"@type\":\"Question\",\"name\":\"Can the relays switch a motor or heater directly?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The relays are rated for resistive loads at up to 250Vac. For motors, heaters or large inductive loads, use a relay to drive a contactor coil such as the EMAS HN0910NUE.\"}},{\"@type\":\"Question\",\"name\":\"Can the digital inputs count pulses?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Each input can be configured as a counter in NXperience, which suits flow meter pulses, production counts and run-hour monitoring.\"}},{\"@type\":\"Question\",\"name\":\"What happens if communication is lost?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A configurable watchdog drives the relays to a defined safe state if the Modbus master stops communicating.\"}}]}\n\u003c\/script\u003e","brand":"Novus","offers":[{"title":"Default Title","offer_id":57641769173365,"sku":"8811612440","price":196.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0501\/5794\/5002\/products\/t2-modulo_io_ethernet_digirail_connect_dmix_01.jpg?v=1679813268","url":"https:\/\/www.production-automation.co.uk\/fr\/products\/novus-digirail-connect-dmix-ethernet-io-module-8di-4-relay","provider":"Production Automation","version":"1.0","type":"link"}