Best All-in-One PLCs for Industrial Automation
The market for all-in-one Programmable Logic Controllers (PLCs) combines compact form factors with built-in HMI, multiple I/O options, and integrated motion or analog capabilities. This article highlights five top all-in-one PLCs with touch screen HMIs, designed to simplify installation, reduce wiring, and speed up programming for American manufacturing and automation environments. Each entry includes a concise feature snapshot and practical considerations to help you compare performance, compatibility, and ease of use.
Summary of selected products:
| Product | Brand | Display | I/O/Features |
|---|---|---|---|
| PLC HMI All in One Integrated Programmable Logic Controller, 2.8 Inch | Generic | 2.8″ TFT LCD | 7 inputs, 5 relays, 4 transistor outputs, high-speed pulse up to 100 kHz, direction signals |
| 3.8 Inch PLC HMI All in One Integrated | Generic | 3.8″ LCD | 10 inputs, 7 relays, 2 built-in AD/DA, 2 NTC10K, high-speed 100 kHz, simple HMI |
| 4 Inch PLC HMI All in One Integrated FX1S-20MR | Generic | 4″ LCD | 12 inputs, 8 relays, built-in 2AD/2DA, 2 NTC10K, 100 kHz encoder support |
| 7 inch HMI PLC All-in-One SEEKU | SEEKU | 7″ Touch Screen | 12 inputs, 8 relays, MODBUS, 0-10V/4-20mA, relay outputs |
| HMI PLC All in One, 7in TFT LCD Display (Pongnas) | Pongnas | 7″ TFT LCD | 8 inputs, 12-in/8-out style I/O, fast download with GX Works2 compatibility |
PLC HMI All in One Integrated PLC, 2.8 Inch Touch Screen
The first entry is a compact all-in-one PLC with a built-in HMI featuring a 2.8-inch TFT display. It combines 7 input channels with 5 relay outputs and 4 transistor outputs that can drive high-speed pulses up to 100 kHz and direction signals for servo or stepper motors. Programming is supported by GX Works 2 or GX Developer, though the software is available in Chinese, which may influence support needs for English-speaking users. The HMI is configured with YKBuilder software for basic screen creation, with a FE Serial option noted for the model. This unit is suitable for tight installations requiring a small footprint and basic motion control capabilities.
3.8 Inch PLC HMI All in One Integrated PLC
This model expands to a 3.8-inch display while retaining FX1S compatibility and a richer input/output set. It offers 10 transistor inputs with 7 relay outputs and additional 4 transistor outputs for high-speed pulse and direction control, enabling control of two servos or steppers. Built-in 2AD (0-10V) and 2DA (0-10V), plus 2 NTC10K thermistor probes, provide straightforward temperature sensing alongside analog control. The software suite remains GX Works 2/Developer with SFC and Ladder Diagram support, and it uses YKBuilder for HMI development. It is well-suited for small- to mid-scale automation projects that require richer analog integration.
4 Inch PLC HMI All in One Integrated FX1S-20MR
With 12 inputs and 8 relay outputs, this 4-inch model adds built-in analog capabilities (2AD and 2DA) and two NTC10K temperature probes, expanding its versatility for process monitoring. It supports high-speed 100 kHz X0/X1 inputs for encoder applications, enabling precise positioning control. The card-enabled I/O layout and native GX Works2/Developer compatibility support a broad range of automation tasks, from simple machine control to more complex motion sequences. The HMI is configured via YKBuilder and is designed to make screen creation accessible, though users should verify model-specific wiring for gas-and-dust environments or harsh manufacturing floors.
HMI PLC All in One, 7in TFT LCD Display
This 7-inch HMI PLC packs a larger display with fast operation and multi-I/O support. It provides a straightforward path from programming to visualization, enabling operators to monitor processes and interact with PLC logic in real time. The unit is compatible with GX Works2/Developer, and typical use cases include simple machine automation, panel displays, and remote monitoring. The 7-inch interface is particularly helpful for operator tasks requiring clearer graphics, easier navigation, and improved readability in industrial settings with ambient lighting variations. Installation is designed to be straightforward for robust environments.
PLC HMI All in One, 4.3in Touch Screen
The 4.3-inch, 32-bit ARM9-based unit offers IP65 front protection for water and dust resistance, making it suitable for harsher environments while providing a robust touch screen experience. It integrates a TFT LCD display with ample color depth and brightness for clear visualization. The rear shell’s IP20 rating complements easy mounting. This model is often favored for small-to-medium automation tasks where a compact HMI with ruggedized front protection is advantageous. It supports familiar GX Works2 concepts for programming and straightforward HMI development with the supplied Fafeicy software ecosystem.
Buying Guide: Key Considerations For All-In-One PLCs
When selecting an all-in-one PLC with a built-in HMI, consider these factors to ensure a good fit for your application:
- Display size and readability: Larger HMIs improve operator visibility, but check enclosure size and mounting constraints. Consider daylight readability and touch response in factory environments.
- I/O count and types: Match the number of digital inputs/outputs, relays, and analog channels to your process. Built-in thermistors (NTC) or analog outputs can reduce wiring.
- Motion and high-speed capabilities: If your application involves servo or stepper motors, confirm high-speed pulse outputs (e.g., 100 kHz) and encoder inputs compatibility.
- Programming software and localization: Some models rely on GX Works2/Developer, with language variations. Verify available documentation and video guides in your preferred language.
- HMI software and customization: Assess the ease of creating screens and how well the HMI integrates with the PLC logic. Availability of sample projects and tutorials speeds up deployment.
- Protection and enclosure rating: Environmentally challenging settings may require IP-rated front panels or sealed housings. Ensure the device’s rating matches your workshop or plant conditions.
- Power requirements and voltage compatibility: Check input voltage ranges and whether 24V or 5V logic is used. Some models expect 24V pulse signals, which may affect wiring practices.
- Software ecosystem and support: Look for active user communities, official guides, and vendor responsiveness for troubleshooting and updates.
- Maintenance and upgrades: Consider how firmware updates are delivered and whether your system can be easily upgraded without replacing whole units.
- Cost vs. value: Balance device capability against total installed cost, including cables, mounting hardware, and software licenses.
Overall, all-in-one PLCs with integrated HMIs offer a compact, cable-reducing solution ideal for small to mid-sized automation tasks. They are particularly attractive where rapid deployment, straightforward visualization, and consolidated control are priorities. For more complex motion control, carefully verify high-speed I/O and encoder compatibility. In environments requiring rugged protection, prioritize IP-rated front panels and robust housings. Finally, ensure that the chosen model aligns with your preferred programming tools and language support to minimize ramp-up time.