Compact Modbus RTU master

The microNCS Modbus RTU master and distributed I/O system can be used to send just a few, or hundreds of, process signals between the field or factory floor and a control system. Part of Moore Industries’ NCS NET Concentrator System family of intelligent distributed I/O, the microNCS provides Modbus RTU (RS-485) master capabilities, cost-effective distributed data acquisition with expansion I/O and control capabilities.

One or both of the microNCS’s Modbus RTU ports can be configured to poll other Modbus RTU slaves with all of the network polling functions of a typical Modbus master. This includes polling of up to 32 microNCS stations, Moore Industries NCS NET Concentrator System Stations and/or third-party Modbus slave devices per port. The microNCS will handle up to 64 slave devices if both Modbus RTU ports are used.

The microNCS operates as a real-time signal gateway by ‘concentrating’ data from four or eight fully isolated analog inputs and four discrete (contact closure) inputs, and then transmitting the data long distances back to one or more host DCS-, PLC- or PC-based control systems.

The microNCS communicates its data using simultaneous dual Modbus RTU and ethernet communications. An industry-standard OPC interface delivers plug-and-play integration with popular PC-based HMI and SCADA software packages. The microNCS also features advanced control and math capabilities using ISaGRAF Control Engine software from ICS Triplex. Using ISaGRAF technology, the microNCS delivers complex control, such as PID, and other complex math functions.

The microNCS is equipped with rugged metal construction, good RFI/EMI protection and an ambient operating range of -40 to +85 °C.