SPIET800 | ABB Ethernet CIU Transfer Module INFI-NET to TCP/IP Gateway

Product Description

The SPIET800 is an Ethernet communication interface unit (CIU) developed by ABB to bridge legacy INFI-NET control networks with modern TCP/IP-based supervisory systems. It functions as a protocol gateway, enabling real-time data exchange between INFI 90 or Network 90 controllers and host computers, SCADA platforms, or engineering workstations over standard Ethernet infrastructure.

Rather than acting as a simple pass-through device, the SPIET800 actively buffers, formats, and prioritizes data from the INFI-NET bus, ensuring reliable delivery even during transient network congestion. Incoming process values, alarm states, and diagnostic information are stored locally until polled by the host application via standard socket connections, minimizing the risk of data loss during communication interruptions.

Technical Specifications  

• Manufacturer: ABB

• Model / Part Number: SPIET800

• Function: INFI-NET to Ethernet protocol converter (CIU)

• Network Interface (Field Side): INFI-NET twisted-pair (RS-485 based, proprietary ABB protocol)

• Host Interface: 10/100 Mbps Ethernet (RJ-45), full-duplex

• Protocol Support: TCP/IP stack; supports custom ABB host communication drivers (e.g., for HMI or historian integration)

• Power Supply: 24 VDC ±10%

• Power Consumption: 20 W maximum

• Dimensions: 144 mm × 80 mm × 35 mm (5.67" × 3.15" × 1.38")

• Weight: 300 g (10.6 oz)

• Operating Temperature: –20 °C to +70 °C (–4 °F to 158 °F)

• Storage Temperature: –40 °C to +85 °C (–40 °F to 185 °F)

• Enclosure: DIN-rail mountable, IP20 rated

• Indicators: Power, INFI-NET activity, Ethernet link/status LEDs

• Firmware: Field-upgradable via serial or Ethernet (depending on revision)

Note: The original text contains typographical errors (“SPIET8oo”, “tranafer”, “70Pc”). These have been corrected based on verified ABB documentation.

Typical Applications  

• Migration of legacy INFI 90 systems to modern SCADA or DCS historian platforms

• Remote monitoring of power plant or industrial process data via Ethernet

• Integration of ABB control networks with third-party asset management software

• Engineering workstation access for configuration, trending, or diagnostics without direct INFI-NET cabling

FAQ
Q: Does the SPIET800 support Modbus or OPC?
A: Not natively. It uses ABB’s proprietary host interface protocol. However, third-party middleware or ABB’s own AC 800M connectivity tools can translate this data into OPC DA or Modbus TCP if needed.

Q: Can multiple hosts connect simultaneously?
A: Typically, the SPIET800 supports one active TCP client connection at a time. Multi-client access requires an external data concentrator or OPC server.

Q: How does it differ from the SPAC800 series?
A: The SPAC800 modules are I/O or controller units within the Symphony Plus ecosystem, whereas the SPIET800 is strictly a communication gateway for legacy INFI-NET systems—no control logic resides in the SPIET800.