Editorial Technical Reference

Supervisory Control and Data Acquisition

This page explains how Supervisory Control and Data Acquisition is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A computer-based control system for monitoring and controlling industrial processes and infrastructure.

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Product Specifications

Technical details and manufacturing context for Supervisory Control and Data Acquisition

Definition
SCADA (Supervisory Control and Data Acquisition) is a component of process control systems used in machinery and equipment manufacturing. It provides centralized monitoring, control, and data acquisition for industrial processes. The system collects real-time data from remote field devices such as sensors and actuators, transmits it to a central computer via communication networks, and presents it to operators through human-machine interfaces (HMIs). Operators can then send supervisory control commands back to field devices to adjust process parameters. SCADA systems typically include remote terminal units (RTUs) or programmable logic controllers (PLCs) for data acquisition, communication modules for data transfer, and operator workstations for visualization and control. The system supports various communication protocols, including Modbus TCP/RTU, and may optionally support OPC UA. It operates within specified parameters such as an operating pressure of 1.0–1.6 MPa, an operating temperature range of -20 to 85 °C, and an input voltage of 24 V DC ±10%. Power consumption ranges from 15 to 30 W for typical 10-inch HMI configurations. The number of I/O points is expandable via modules, ranging from 32 to 256 points. Sampling rates are configurable per channel, from 10 to 1000 Hz, with an accuracy of ±0.1% FS for analog inputs (per IEC 60770). The system offers ingress protection ratings from IP54 to IP65 (per IEC 60529) for panel-mounted units, and operates in non-condensing humidity of 10–90% RH. Weight varies from 5 to 15 kg depending on configuration, and display sizes range from 7 to 21 inches with optional touchscreen. These values are directory reference ranges and must be verified with the legal manufacturer or supplier for specific models and applications.
Working Principle
SCADA systems operate by collecting data from sensors and field devices through remote terminal units (RTUs) or programmable logic controllers (PLCs). This data is transmitted to a central computer via communication networks, where it is processed and displayed on operator workstations. Operators can then send control commands back to field devices to adjust process parameters. The system relies on communication protocols such as Modbus TCP/RTU, and optionally OPC UA, to ensure reliable data exchange. The central computer continuously polls or receives data from field devices, updates the HMI in real time, and logs historical data for analysis. Control commands are transmitted from the operator workstation to the field devices, enabling supervisory control. The system's performance is influenced by parameters such as sampling rate, accuracy, and communication latency. Proper configuration of these parameters is essential for effective monitoring and control.
Common Materials
Electronic components, Circuit boards, Communication modules
Technical Parameters
ParameterTypical rangeNotes & selection driver
Operating Temperature-20–85 °COutside range, seals may fail
Input Voltage24 ±10% V DCUse regulated power supply
Power Consumption15–30 WTypical for 10-inch HMI
Number of I/O Points32–256 pointsExpandable via modules
Communication ProtocolModbus TCP/RTUSupports OPC UA optionalIEC 61158
Sampling Rate10–1000 HzPer channel, configurable
Accuracy±0.1 % FSFor analog inputsIEC 60770
Ingress ProtectionIP54–IP65For panel-mounted unitsIEC 60529
Operating Humidity10–90 % RHNon-condensing
Weight5–15 kgDepending on configuration
Display Size7–21 inchTouchscreen optional

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Human-Machine Interface
    Provides graphical interface for operators to monitor and control processes
    Material: Electronic display components
  • Remote Terminal Unit
    Collects data from field sensors and executes control commands
    Material: Electronic circuits and communication modules
  • Communication Infrastructure
    Transmits data between central system and field devices
    Material: Network equipment and cables
  • SCADA Server
    Processes and stores collected data, manages system operations
    Material: Computer hardware and software
  • Programmable Logic Controllers Optional
    Collect field data and execute control commands in place of an RTU.

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (system monitors/controls external processes; no direct pressure rating)
other spec: Network bandwidth: 10/100/1000 Mbps, I/O points: Up to 100,000+, Data refresh rate: 100 ms to 10 s
temperature: -40°C to +85°C (operational range for typical industrial hardware)
Media Compatibility
✓ Water treatment plants ✓ Oil and gas pipelines ✓ Manufacturing assembly lines
Unsuitable: High-EMI environments without proper shielding (e.g., near heavy arc welding)
Sizing Data Required
  • Number of I/O points (analog/digital)
  • Required data acquisition rate (scan intervals)
  • Network architecture and redundancy requirements

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Communication Network Failure
Cause: Network congestion, hardware degradation, or cyber-attacks disrupting data flow between RTUs/PLCs and the central SCADA server.
Sensor/Transducer Drift or Failure
Cause: Environmental factors (temperature, humidity), calibration loss, or electrical interference leading to inaccurate data acquisition and control signals.
Maintenance Indicators
  • Unresponsive or erratic HMI displays indicating data communication loss or system lag
  • Audible alarms from control panels or abnormal equipment behavior due to faulty sensor inputs
Engineering Tips
  • Implement redundant communication networks and regular cybersecurity audits to prevent network failures and unauthorized access.
  • Establish a scheduled calibration and testing program for all sensors and transducers, including environmental hardening where necessary.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 62443 (Industrial automation and control systems security) ANSI/ISA-95 (Enterprise-control system integration)

Quoted from the published standard.

Manufacturing Precision
  • Signal accuracy: +/-0.1% of full scale
  • Response time: <100ms for critical alarms
Quality Inspection
  • Cybersecurity vulnerability assessment
  • Functional safety test (IEC 61508/61511)
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Supervisory Control and Data Acquisition

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Siasun Robot & Automation
Tianjin, CN
CE UL GOST ESA +1
Also makes: Assembly Robot, Transfer Robot
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Integrated Supervisory Control System”
View source page ↗ en.siasun.com · recorded 2026-08-31
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Frequently Asked Questions

What communication protocols does the SCADA system support?

The system supports Modbus TCP/RTU as standard, with optional support for OPC UA. The protocol is referenced to IEC 61158. Verify protocol compatibility with your existing infrastructure.

What is the accuracy of analog input measurements?

The accuracy for analog inputs is ±0.1% of full scale (FS), as per IEC 60770. This is a reference value; actual accuracy may vary with configuration and calibration.

What are the environmental limits for operation?

The operating temperature range is -20 to 85 °C, and operating humidity is 10–90% RH (non-condensing). Ingress protection is IP54–IP65 for panel-mounted units, per IEC 60529. Ensure the installation environment meets these conditions.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Process Control Systems
View system integration details

Industrial Ecosystem & Supply Chain Structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Supervisory Control and Data Acquisition.

SCADA Supervisory Control System

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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