I/O Expansion Units

The ET-87P4 extends I-87K series I/O modules over Ethernet, giving engineers remote analogue, digital, counter and frequency I/O without running individual field wiring back to a controller. Four slots accept I-87K modules, and two RJ-45 switch ports allow units to be chained in series with each other or with other Ethernet devices, reducing cabling and installation space.Designed for harsh and electrically noisy sites, the unit has an isolated +10 ~ 30 VDC power input with redundant power inputs, and an operating range of -25 ~ +75 °C. Maintenance is simplified by hot swapping, automatic configuration, LED fault indication, push buttons for setting the IP address and a 4-digit 7-segment display. Dual watchdog, programmable power-on and safe values support continuous and safe operation.Software integration is supported through several SDKs and demos, including DLL, LabVIEW driver, InduSoft driver, Linux driver and OPC server. The unit also provides a RS-232 console port and Modbus RTU/ASCII slave protocol on its COM port.ApplicationsRemote industrial monitoring and controlDistributed I/O expansion over EthernetHarsh or electrically noisy industrial environments

The ET-87P4-MTCP CR extends I-87K series I/O modules over Ethernet, acting as a Modbus TCP slave for supervisory systems. Four slots accept analogue, digital and DI counter modules, and the I/O can be hot swapped without taking the whole unit out of service.Two RJ-45 switch ports allow units to be daisy-chained in series or connected to other Ethernet devices, reducing cabling and panel space. An RS-232 console port supports Modbus RTU/ASCII slave operation, and the unit can also act as a Modbus TCP to RTU gateway.Designed for harsh, electrically noisy sites, the unit has a wide 10 ~ 30 VDC input with 1 kV isolation and an operating range of -25 ~ +75 °C. Auto configuration, status LEDs and watchdog functions help with commissioning, fault detection and safe-state handling.ApplicationsIndustrial monitoring and controlEnvironmental monitoringRemote I/O expansion for SCADA, HMI and PLC systems using Modbus

The ET-87P8 CR is a remote intelligent I/O expansion unit that takes up to eight I-87K series I/O modules and makes them available over Ethernet. It suits industrial monitoring and control installations where I/O needs to sit close to the process while the control system stays elsewhere on the network.Two built-in Ethernet switch ports let you daisy-chain units or connect other Ethernet devices in series, which reduces cabling and saves panel space. Hot swap, automatic configuration and LED fault indication keep installation and maintenance simple. The unit accepts a wide 10 ~ 30 VDC isolated supply and operates from -25 ~ +75 °C, so it is suited to harsh, electrically noisy environments.The ET-87P8 CR can be addressed over Modbus TCP as a slave, or used as a Modbus TCP to RTU gateway. DCON (ASCII format) is available on the RS-232 console port. The ordering code is listed as RoHS compliant.ApplicationsIndustrial monitoring and controlRemote I/O expansion over EthernetDistributed I/O in harsh or electrically noisy environments

ET-87P8-MTCP is a Modbus TCP expansion unit that extends an Ethernet network with up to eight I-87K series I/O modules. It suits industrial monitoring and control installations where I/O needs to sit remote from the controller, and it supports the I/O hot swap function so modules can be replaced with the unit in service.Two switched RJ-45 ports (10/100 Base-TX) allow units to be daisy-chained, which reduces cabling and saves panel space. The unit also serves as a Modbus TCP to RTU gateway and provides a Modbus RTU/ASCII slave interface on its RS-232 console port, so serial and Ethernet masters can both be used.The unit accepts a 10 to 30 VDC supply with 1 kV isolation and redundant power inputs, and is rated for an operating range of -25 to +75 °C. Its status LEDs and 5-digit display aid fault finding, while the CPU and software watchdogs and safe-value settings help keep outputs in a defined state if communication is lost. SDKs are provided for Windows XP, Windows CE 5.0/6.0, Linux and MiniOS7.ApplicationsRemote I/O expansion for industrial monitoring and controlDistributed data acquisition over EthernetModbus TCP integration with SCADA, HMI and PLC systemsEnvironments with harsh conditions and electrical noise

The ET-8KP4-MTCP CR extends I-8K and I-87K series I/O modules over Ethernet, giving Modbus TCP masters remote access to four I/O slots. It suits industrial monitoring and control installations where remote I/O needs to be added to an existing Modbus TCP network without a dedicated controller at the I/O location.Two Ethernet switch ports allow units to be daisy-chained, reducing cabling and saving installation space. The unit accepts a wide 10 ~ 30 VDC input with isolated power and is rated for an operating temperature of -25 ~ +75 °C, making it suitable for harsh and electrically noisy environments.Installation and maintenance are simplified by auto configuration and LED indicators for fault detection. Watchdog and safe-value features help protect the process if communication is lost. The unit also supports Modbus RTU/ASCII on its RS-232 console port and can act as a Modbus TCP to RTU gateway.ApplicationsIndustrial monitoring and controlRemote I/O expansion over EthernetEnvironmental monitoringHarsh or electrically noisy installation environments

The ET-8KP8-MTCP CR extends up to eight I-8K and I-87K series I/O modules over Modbus TCP, so a PLC, SCADA system or HMI can reach remote analog, digital and DI counter channels across an Ethernet network. The unit supports more than 90 I/O modules in total.Two Ethernet switch ports (2 x RJ-45, 10/100 Base-TX) allow units to be daisy-chained, reducing cabling and panel space. The RS-232 console port supports Modbus RTU/ASCII slave operation, and the unit can also act as a Modbus TCP to RTU gateway.Designed for harsh, noisy environments, it has an isolated 10 ~ 30 VDC power input with redundant inputs and an operating range of -25 ~ +75 °C. Auto configuration, LED fault indication, CPU and software watchdogs, and programmable power-on and safe values simplify commissioning and maintenance.ApplicationsIndustrial monitoring and controlEnvironmental monitoringHarsh, noisy industrial environments

The iP-8441-MTCP extends I-8K and I-87K series I/O modules over Ethernet, so analog, digital, counter and frequency channels can be read and controlled from a Modbus TCP host. Each unit provides four slots, and the range of supported modules covers more than 50 types, which makes it a practical choice when a distributed I/O layout must be built around an existing module set.The unit is aimed at electrically noisy, harsh sites. It accepts a wide 10 ~ 30 VDC supply with isolated power input, carries a redundant power input option and operates between -25 and +75 °C. Installation and maintenance are simplified by auto configuration, LED fault indication, a dual watchdog, programmable power-on values and programmable safe values.For integration, the Modbus TCP slave function is complemented by Modbus TCP to RTU gateway capability and Modbus RTU/ASCII slave operation on the serial ports. An SDK is available for Windows XP, Windows CE 5.0/6.0, Linux and MiniOS7, and the built-in MiniOS7 platform can be customised in C for 16-bit executables.ApplicationsIndustrial monitoring and controlRemote I/O expansion for SCADA, HMI and PLC systemsHarsh or electrically noisy industrial environmentsEnvironmental monitoring over Modbus

The iP-8841-MTCP extends I-8K and I-87K series I/O modules over Ethernet, giving Modbus TCP masters remote access to analogue input and output, digital input and output, counter and frequency modules. More than 50 compatible I/O modules are supported across its eight slots, which makes it a practical choice for remote monitoring and control in industrial plants.It suits electrically noisy, temperature-variable cabinets. The power input accepts 10 ~ 30 VDC and is isolated, and the unit operates from -25 ~ +75 °C. Auto configuration, LED fault indication, dual watchdog protection, programmable power-on values and safe values help simplify installation, maintenance and fault handling.For integration, the unit supports Modbus TCP and Modbus RTU/ASCII, and includes a Modbus TCP to RTU gateway function. The MiniOS7 platform can be programmed in C, with SDK support for Windows XP, Windows CE 5.0/6.0 and Linux, so engineers can adapt the preinstalled Modbus firmware to their own applications.ApplicationsRemote industrial monitoring and controlSCADA, HMI and PLC systems using Modbus driversEnvironmental monitoringDistributed I/O in harsh or electrically noisy installations