8810 Remote Terminal Unit

Brand: Varec, Inc

The 8810 Remote Terminal Unit (RTU) is a modular, Ethernet enabled, communications device.

Its powerful industrial chassis is ideal for integration with tank gauges and other field devices used in inventory management applications.

With support for up to six interface modules, it is extremely flexible in handling data exchange across multiple communication protocols.

With the CPU module serving as the base functionality for the 8810 RTU, all logic and protocols are handled seamlessly, meaning there is only one firmware application for the entire unit.

The standard, built-in OPC Unified Architecture (OPC UA) server communicates natively over standard internet protocols.

This allows human machine interface (HMI) applications to read data from the 8810 RTU. It is also compatible with a wide range of systems, including legacy Varec systems, using RS-232 and RS-485 standards.
  • Ethernet enabled, provides high-speed communications in near real time
  • Industry standard OPC UA
  • 800 MHz, 4-core CPU
  • Multi-threaded task handling
  • Modbus for host or field integration via Serial RTU, Modbus TCP, or Modbus over TCP
  • Channels can be configured as Modbus Slave or Master
  • Supports up to 400 tanks
  • Supports up to 24 communication channels
  • Digital input/output for alarms, monitoring and control
  • Intelligent scanning based on tank activity
  • Offline configuration functionality
  • Pre-configured diagnostics built-in
  • Interfaces with multiple different manufacturer’s tank gauging devices
  • Optional tank volume calculations based on the latest API standards
  • Supports remote firmware upgrades and file transfers



Module Architecture

  • Complete Computer Control System
  • Inputs are reported to Host Computer by Scanned Poll
  • Built-in Software Function Library
  • Surge Protection Conforming to ANSI/IEEE C37.90a-1974
  • Host Communication via RS-232 and RS-485
  • Industry Standard Protocols: Modbus and OPC UA
  • I/O Interfaces: DI, DO
  • Quick-Disconnect I/O Terminations
  • Modular Construction for Optimum Expandability
  • Non-Volatile Database
  • Redundant power inputs
  • 6 expansion slots
  • 24+ channels
  • Supports up to 400 tanks
  • Green Hills INTEGRITY RTOS with ARINC-653 Partitioning

I/O Expansion

  • 8812 BPM: Bi-Phase Mark
  • 8813 DIO: Digital I/O
  • 8814 SER: Serial
  • 8815 M/S: Mark/Space
  • 8816 TW: Tankway
  • 8818 AI: Analog Input
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