Industry-Verified Manufacturing Data (2026)

PLC Controller & HMI

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard PLC Controller & HMI used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical PLC Controller & HMI is characterized by the integration of PLC CPU Module and HMI Touch Screen. In industrial production environments, manufacturers listed on CNFX commonly emphasize Electronic components construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Integrated control and monitoring system for leak testing automation

Product Specifications

Technical details and manufacturing context for PLC Controller & HMI

Definition
A combined PLC (Programmable Logic Controller) and HMI (Human-Machine Interface) system that serves as the central control unit within a Leak Testing Module, responsible for executing test sequences, monitoring sensor inputs, controlling actuators, and providing operator interface for test configuration and results display.
Working Principle
The PLC executes programmed logic to control the leak testing process sequence, while the HMI provides visual interface for operators to monitor test status, configure parameters, and view results. The PLC processes input signals from pressure sensors, flow meters, and position sensors, then outputs control signals to valves, pumps, and other actuators to perform precise leak testing cycles.
Common Materials
Electronic components, Plastic housing, Metal mounting brackets
Technical Parameters
  • Physical dimensions for panel mounting (mm) Standard Spec
Components / BOM
  • PLC CPU Module
    Executes control logic and processes I/O signals
    Material: Electronic components, plastic housing
  • HMI Touch Screen
    Provides visual interface and operator input
    Material: Glass, plastic, electronic components
  • Communication Module
    Enables data exchange with other devices and systems
    Material: Electronic components, plastic housing
  • Power Supply Unit
    Provides regulated power to all components
    Material: Electronic components, metal housing
Engineering Reasoning
0-16 bar absolute pressure, 0-60°C ambient temperature, 85-264 VAC input voltage
Pressure sensor overload at 25 bar, CPU thermal shutdown at 85°C, power supply failure at 300 VAC
Design Rationale: Piezoresistive sensor diaphragm yield stress at 25 MPa, semiconductor junction thermal runaway at 150°C, electrolytic capacitor dielectric breakdown at 400 V
Risk Mitigation (FMEA)
Trigger 24 VDC power supply ripple exceeding 500 mVpp
Mode: Analog input signal corruption causing false leak detection
Strategy: LC filter with 100 μH inductor and 470 μF capacitor at power entry
Trigger RS-485 communication line impedance mismatch causing signal reflection
Mode: HMI-PLC data packet loss exceeding 5% error rate
Strategy: 120 Ω termination resistors at both ends with twisted-pair shielding

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for PLC Controller & HMI.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar (sensor input range), 0 to 100 bar (system control capability)
flow rate: 0.1 to 100 L/min (leak test flow range)
temperature: 0°C to 50°C (operating), -20°C to 70°C (storage)
slurry concentration: Up to 20% solids by volume (for compatible media)
Media Compatibility
✓ Compressed air/dry gases ✓ Hydraulic fluids (mineral oil-based) ✓ Water/glycol mixtures
Unsuitable: Highly corrosive chemicals (e.g., concentrated acids, strong oxidizers)
Sizing Data Required
  • Maximum test pressure required (bar)
  • Required leak detection sensitivity (cc/min)
  • Number of test stations to be controlled

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Communication failure
Cause: Network cable damage, electromagnetic interference, or incorrect IP configuration disrupting data exchange between PLC and HMI.
Memory corruption
Cause: Power surges, improper shutdowns, or firmware bugs leading to loss of program logic or HMI screen data.
Maintenance Indicators
  • HMI screen freezing or displaying 'Communication Error' messages
  • PLC status LEDs showing abnormal patterns (e.g., constant red/flashing)
Engineering Tips
  • Implement regular backups of PLC programs and HMI configurations, storing them off-site with version control.
  • Install uninterruptible power supplies (UPS) and surge protectors, and maintain proper grounding to prevent electrical damage.

Compliance & Manufacturing Standards

Reference Standards
ISO 13849-1: Safety of machinery - Safety-related parts of control systems ANSI/ISA-95.00.01: Enterprise-Control System Integration CE Marking (EU Directive 2014/35/EU for Low Voltage Equipment)
Manufacturing Precision
  • Enclosure IP Rating: IP65 (dust-tight and protected against water jets)
  • Electrical Connection Tightening Torque: +/-10% of specified value
Quality Inspection
  • Functional Safety Test (verification of safety functions per ISO 13849)
  • Environmental Stress Screening (temperature cycling and vibration testing)

Factories Producing PLC Controller & HMI

Verified manufacturers with capability to produce this product in China

✓ 94% Supplier Capability Match Found

S Sourcing Manager from United Arab Emirates Feb 01, 2026
★★★★★
"The technical documentation for this PLC Controller & HMI is very thorough, especially regarding technical reliability."
Technical Specifications Verified
P Procurement Specialist from Australia Jan 29, 2026
★★★★☆
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the PLC Controller & HMI so far. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Singapore Jan 26, 2026
★★★★★
"Testing the PLC Controller & HMI now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

11 sourcing managers are analyzing this specification now. Last inquiry for PLC Controller & HMI from Mexico (1h ago).

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Frequently Asked Questions

What makes this PLC controller & HMI system suitable for leak testing automation?

This integrated system combines precise PLC control with intuitive HMI monitoring specifically designed for leak testing applications, featuring modular components that ensure accurate pressure monitoring, cycle control, and real-time fault detection in machinery manufacturing environments.

Can the communication module interface with existing manufacturing equipment?

Yes, the communication module supports multiple industrial protocols including Ethernet/IP, Modbus TCP, and Profinet, allowing seamless integration with existing machinery, sensors, and factory networks for comprehensive leak testing automation.

What are the maintenance requirements for this PLC & HMI system?

The system requires minimal maintenance due to its industrial-grade components. Regular tasks include cleaning the HMI touch screen, checking power supply connections, and updating firmware. The modular design allows easy replacement of individual components without system downtime.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

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