Industrial IoT (IIoT) Systems for Factories in Chonburi, Rayong and the EEC

Systems Connect (Nice System & Development) designs and installs factory IoT systems (Industrial IoT, or IIoT) for manufacturers in Chonburi, Rayong and the EEC. We cover everything from network cabling to the machines and collecting data from PLCs and power meters, to dashboards and alerts that production and engineering teams actually use. Our work starts with the network and connectivity layer, which is where IIoT projects most often run into trouble. Our team has delivered fiber optic, network and VPN projects in factories and power plants in the Eastern region (see our projects below).

Discuss a factory IoT project in Chonburi or Rayong

What is factory IoT, and how is it different from everyday IoT?

Industrial IoT (IIoT) brings data from field devices such as PLCs, sensors, power meters and inverters onto a network so it can be tracked, analysed and used for decisions. It differs from home or office IoT in three main ways.

1. Production continuity: A network outage of just one hour can stop a production line, so the network needs backup paths and separate network zones.
2. Industrial protocols: Most factory equipment communicates using Modbus (RTU/TCP), OPC UA or a manufacturer’s own protocol, not Wi-Fi or Bluetooth like consumer devices.
3. OT security: Connecting machines directly to the internet is high risk, so zones and communication channels should be controlled according to ISA/IEC 62443 and the NIST SP 800-82 guidelines.

Read the basics: What is IoT? and What is the MQTT protocol?

The IIoT work we cover

Site survey and architecture design

We visit the site and check which communication ports the machines and meters have (RS-485 or Ethernet), how long the cable runs are, and whether there is a rack and backup power. We then document the system design (a network diagram and a list of the data points to collect) before we quote.

Factory network (OT network) and fiber backbone

• We design networks that separate the machines’ OT network from the office IT network using VLANs and a firewall.
• We run fiber optic between buildings or over distances copper LAN cannot reach (Ethernet over copper is limited to about 100 metres per segment). Fiber also helps reduce interference from motors and inverters.
• See our factory network systems and fiber optic cabling services.

Collecting data from PLCs, machines and power meters (Modbus / OPC UA / MQTT)

An IoT gateway reads values from PLCs or power meters over Modbus RTU/TCP or OPC UA, then sends the data to a server or the cloud using MQTT, an OASIS standard (MQTT 5.0) that is lightweight and works well even on unstable networks.

Dashboards and energy monitoring

Machine status and electrical values (kW, kWh, power factor) are shown on a screen or mobile phone. For energy, see our energy monitoring and smart meter systems for factories, which can be extended to factory power saving systems and solar cells for factories.

Remote access and security based on IEC 62443

• Site-to-site VPN or remote access through a firewall instead of opening ports directly to machines.
• Zones and conduits based on the IEC 62443 approach, restricted user rights and access logging.
• Real examples: a VPN connecting the ERP system at the Thai Delica factory, and a VPN sending values from a water pumping PLC in Pattaya.

Reference architecture: from machine to dashboard (based on ISA-95)

We follow the levels of the ISA-95 standard so data flows in an orderly way and can later be extended to MES or ERP.

Related projects in Chonburi, Rayong and Pattaya

Examples of network and data connection work our team has done in the Eastern region (click to see photos from the site)

1. Fiber optic and VPN system connecting a water pumping PLC to the Pattaya waterworks: sending data from an on-site pumping PLC over fiber optic and VPN to its destination, a direct IIoT data connection project.
2. Network design and deployment for the Mitsubishi factory in Rayong: an in-factory network in Rayong province.
3. VPN installation to connect the ERP system at the Thai Delica factory: connecting ERP over VPN, which sits at the business level (Level 4) in the ISA-95 model.
4. Fiber optic installation at the SPP Glow power plant, Rayong: fiber optic work at a power plant.
5. Fiber optic installation at IRPC Clean Power: fiber optic and network work at a power plant in Rayong province.

Factory IoT service areas in Chonburi and Rayong (EEC)

Si Racha, Laem Chabang and Laem Chabang Industrial Estate

Factories and warehouses near Laem Chabang port often need real-time tracking of machine status, cold rooms and energy use. A fiber backbone with gateways at key points can cover large buildings.

Amata City Chonburi, Bo Win, Pinthong and WHA Eastern Seaboard

Automotive and parts estates around Ban Kao, Bo Win and Pluak Daeng often start by tracking machine status or energy use per line. Reading values from existing PLCs or meters over standard protocols lets you start without replacing machines.

Rayong, Map Ta Phut, Amata City Rayong and Pluak Daeng

In petrochemical and power plant areas, we have installed fiber optic for the SPP Glow power plant in Rayong and IRPC Clean Power, and designed the network for the Mitsubishi factory in Rayong.

Pattaya, Bang Lamung, Sattahip and Ban Bueng

Projects in this area include connecting a water pumping PLC to send data over fiber and VPN in Pattaya, and running LAN cabling to machines in Ban Bueng.

How we work

1. Discuss your goals: what values you need, and which decisions the data will support
2. Site survey: check communication ports, cable distances, power and racks
3. Design and quotation: network diagram, list of data points and BOQ
4. Installation and testing: cabling, gateway and firewall setup, and checking the values against the machine displays
5. Handover: the system is handed over with design documents

Start cost-effectively: run a pilot before you expand

We recommend starting with a single production line or a single MDB, collecting real data for 1-3 months, and using those numbers to decide whether to expand. This reduces the risk of over-investing and shows where the existing network needs improvement.

FAQ about factory IoT systems in Chonburi and Rayong

How is factory IoT different from SCADA?

SCADA controls and monitors production processes in real time inside the factory. IIoT focuses on collecting data from many sources, such as PLCs, power meters and sensors, onto a server or the cloud so it can be analysed and viewed from anywhere. The two work together: IIoT can read data from an existing SCADA or PLC over standard protocols such as OPC UA or Modbus.

Do I need to replace my existing machines or PLCs?

Usually not. If a machine or meter has an RS-485 or Ethernet port that supports Modbus or OPC UA, a gateway can read its values. For older machines without a communication port, external sensors or meters can be added instead.

Is factory data safe when it is connected to the internet?

Separate the machines’ OT network from the IT network, use a firewall and VPN instead of opening ports directly to machines, and restrict user rights according to ISA/IEC 62443. These are the principles we use when designing factory networks.

Which areas do you cover?

We cover Chonburi province, including Pattaya, Si Racha, Laem Chabang, Bo Win, Ban Bueng, Amata City Chonburi and Pinthong Industrial Estate, and Rayong province, including Map Ta Phut, Pluak Daeng, Amata City Rayong and WHA Eastern Seaboard.

If the budget is limited, where should we start?

Start with a single pilot point that has a clear effect on cost, such as measuring electricity at the main MDB or tracking the status of the bottleneck machine on a production line. Collect real data for a while, then decide whether to expand.

Discuss a factory IoT project in Chonburi or Rayong

Send us your site details, such as the number of machines or meters, the PLC brand and the industrial estate where your factory is located, through our contact page, or contact us by phone or LINE below.