Remote Process Control Measurement / Modbus TCP

Application Notes

Application Background                                                                                                                                      Printer Friendly Version

Oil companies, mining companies, public water, electrical and gas utilities have automated industrial measurement and process control applications to provide better management of automated processes.

Remote Process Control Measurement

These processes usually need to be monitored remotely, hence there is a requirement to have sensor and process data read electronically on site and then transferred to a central system or control room where staff can view the readings and make decisions as to the operation of and perhaps the shutdown of functions at a remote site.

Application Detail

A typical remote site may have industrial pressure / temperature sensors monitoring key points in a remote pumping station / oil well / gas pipeline. In a remote pumping station, it is likely that a local industrial Remote Terminal Unit (RTU) would be providing local control to several processes, and providing the capability to connect via Modbus to a central Supervision Control and Data Acquisition (SCADA) system.

Most RTUs have the industry standard Modbus interface, and this can present as a Modbus master interface or a Modbus slave interface. Unidata Neon Remote Terminals and Modules can connect to the Modbus interface of most RTU equipment and can extract status and readings information on a routine basis, say every 5, 10 or 30 minute basis and transmit that data across a cell phone and / or a satellite link and display those status points and readings on the standard Neon Server from anywhere on the Internet using a standard web browser. The Neon Server also has the ability to present the Modbus information on a Modbus TCP direct interface, as though that interface was the actual RTU Modbus interface in the remote location.

Subject to Health, Safety and Security Regulation requirements, limited control functions can be initiated across the link, for example remote shutdown.
There are some typical application scenarios detailed below.
This application example shows specific pressure and temperature sensors being read via standard industrial 4-20mA analog inputs. The data is available for reporting out by ftp, web services and a specific SQL database view.

2018E Inmarsat integration with Rosemount Transducer

This application example shows a typical (for example Emerson ROC) RTU being used by the Neon Remote Terminal, then being passed to the Neon Server and then being presented out of the Neon Server as a Modbus TCP interface. For this application, it would be being fed via Modbus TCP to a typical central SCADA system ( for example Emerson Delta V)

2018E Inmarsat integration with Emerson ROC RTU

The data is available for reporting out by ftp, web services and a specific SQL database view.

2018E Inmarsat integration with SCADA

This application example shows a typical (Emerson ROC) RTU being used by the Neon Remote Terminal, then being passed to the Neon Server and then being presented on the Neon Server Web. The data is available for reporting out by ftp, web services and a specific SQL database view.

Typical Configuration

Options for Neon Telemetry - NRT / RTU / Field UnitsUnidata Part NumberDescription
Cellular RTU 3G2013F-AB03Neon Metering Module 3G with Antenna and Li Battery
Cellular RTU 4G2013F-AB04Neon Metering Module 4G with Antenna and Li Battery
Cellular RTU 3G - Industrial2016F-AB03Neon Remote Terminal 3G with Antenna and Li Battery
Cellular RTU 4G - Industrial2016F-AB04Neon Remote Terminal 4G with Antenna and Li Battery
Low Earth Orbit Satellite Globalstar2015E-AB0Neon Remote Terminal - Satellite Globalstar Modem with Antenna and three Li Batteries
Ethernet2017E-0B0-1 or 3NRT Ethernet with single or triple Ethernet Ports
with three Li Batteries
Equatorial Orbit Satellite - Inmarsat2018E-AB0-1 or 3NRT Ethernet with single or triple Ethernet Ports
with three Li Batteries
LCD Display2500ENRT LCD Display
NRT Field Termination Strip2103F2015E,2016F,2017E, and 2018E NRT FTS
NRT Firmware Option2303A-8M8M Extended Memory Option
NRT Firmware Option2303A-8M-CAM8M Extended Memory & Serial Camera Option
NRT Firmware Option2303A-CAMSerial Camera Option
Options for Neon Application Software - Customer ServerUnidata Part NumberDescription
Neon Application Software2302ANeon Server Software Licence Incl 5 NAL
Neon Application Software2302A-10Additional 10 NRT Access Licences
Neon Application Software2302A-20Additional 20 NRT Access Licences
Neon Application Software2302A-50Additional 50 NRT Access Licences
Options for Neon Application Software - Unidata ServerUnidata Part NumberDescription
Neon Application Software2301ANeon Data Initial Subscription Setup Fee
Neon Hosting Service2301A-01Neon Data Service Fee for 1-50 NRTs
Neon Hosting Service2301A-02Neon Data Service Fee for 51-100 NRTs
Neon Hosting Service2301A-10Neon Data Service Fee Metering
Options for Conventional Dataloggers / Field UnitsUnidata Part NumberDescription
Standards Starlogger6004D-11Red Logger 512K with Alkaline Battery
Display Starlogger6004D-21Blue Logger 512K with LCD and Alkaline Battery
Prologger7001D-11Green Logger 1M with LCD and Alkaline Battery
Micrologger8010C-EURMicrologger 512K
Starlogger Field Termination Strip6103E6004D FTS
Prologger Field Termination Strip7100E7001D FTS
Starlog V4 Management Software6308A-AUEStarlog V4 Full Licence Key