Remote I/O expansion units

Remote I/O expansion units are used to expand the I/O count of any existing or new automation or control system. They can monitor and control process signals such as volts, mA and temperature, or switches and digital signals. They integrate seamlessly with SCADA, PLC, PAC and PC based software systems, making them ideal for all industrial applications.

Ethernet expansion units are specifically designed for signals that need to be measured or controlled using an Ethernet network interface, using fieldbus protocols such as: Modbus TCP, ProfiNET, Ethernet IP or EtherCAT.

Serial expansion units are specifically designed for signals that need to be measured or controlled using a Serial interface, using fieldbus protocols such as: Modbus RTU/ASCII, ProfiBUS, or CAN. Universal serial bus expansion units are specifically designed for signals that need to be measured or controlled using a USB interface.

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	NI CompactDAQ cDAQ-917x series 1 to 14 Slot USB CompactDAQ Chassis From £465.00	Over 60 mixed measurement module types to meet your application needs Easily customise timing with up to seven hardwaretimed clocks per chassis Take distributed measurements using a USB connection Customise your acquisition, analysis, visualization, and reporting with LabVIEW Rugged form factors that withstand -40 ºC to 70 ºC temperatures, 50 g shock, and 5 g vibration

	NI CompactDAQ cDAQ-918x series 1 to 8 Slot Ethernet CompactDAQ Chassis, Ethernet From £595.00	Over 60 mixed measurement module types to meet your application needs Easily customise timing with up to seven hardwaretimed clocks per chassis Take distributed measurements with Time Sensitive Networking enabled Ethernet chassis Customise your acquisition, analysis, visualisation, and reporting with LabVIEW Rugged form factors that withstand -40 ºC to 70 ºC temperatures, 50 g shock, and 5 g vibration

	Moxa ioThinx 4510/4530 Series Advanced modular remote I/O with built-in serial ports POA	Built-in Modbus RTU gateway function Supports Modbus/SNMP/RESTful API/MQTT Supports up to 64 I/O modules Built-in Azure/AWS/Alibaba Cloud library Moxa Industrial Linux with secure boot function

	ICP DAS IP-8441/8841-MTCP series ICP DAS Backplane based modular distributed I/O system with ethernet From £488.89	Modular I/O system including analog, digital, relay and counter Four or eight modules per base unit Supports Modbus TCP, Modbus RTU and ASCII protocols Built-in watchdog timer for system auto-reset Supports 8K & 87K modules

	Moxa ioLogik 4000 series Moxa Modular remote I/O server POA	Industrial Ethernet or RS232/485 Modbus/ TCP, Modbus RTU/ ASCII Expandable up to 31 modules for 124 analog channels Analog and digital I/O modules Thermocouple and RTD temperature modules

	Moxa ioLogik E4200 series Moxa Modular Active Ethernet I/O server POA	Active Ethernet I/O with Dual LAN ports Supports up to 16 modules for up to 256 digital channels Analog and digital I/O modules Thermocouple and RTD temperature modules Unicode Active messaging with real-time clock

	ICP DAS RU-87P8/RU-87P4 series ICP DAS RS485 Backplane Remote I/O Expansion Unit From £230.69	One RS-485 Port for Multi-Drop Topology I/O Module Hot Swap Auto Configuration LED Indicators for Fault Detection Switches to Configure Communication

	ICP DAS USB-87Pn Series ICP DAS Modular USB I/O Expansion Unit From £215.42	One USB Port I/O Module Hot Swap Auto Configuration LED Indicators for Fault Detection DCON Protocol