ABB RET670
The RET670 module is a remote terminal unit for ABB’s Remote Terminal Control System (RTU). It can be used to collect and transmit field data and perform remote control operations, and has the following features:
Multiple communication protocols are supported, including Modbus RTU, DNP3 and IEC 61850
Strong scalability, up to 32 I/O modules can be connected
High reliability to meet harsh environment requirements
Easy to install and maintain