Intro Summary
Compact 2.8″ touchscreen HMI‑PLC combo—ideal for small machines and automation systems, with built‑in USB, TTL, and easy programming.
Product Overview
The MM‑12MR‑4MT‑FE280‑FX‑A (MM‑12MR‑4MT) from YKHMI (Zhongda) is a compact industrial touchscreen device combining an HMI and PLC. It features a 2.8″ color display, internal TTL comm port, and mini‑USB for program download . Designed for simple control systems where space is tight, it supports touch-based operator interfaces and basic PLC logic in a single package.
How to Use
- Mount unit into a 79 × 69 mm panel cutout.
- Connect I/O wiring and supply voltage.
- Use download cable via mini-USB to PC, install drivers.
- Write HMI screens and PLC logic with YKBuilder (recommended).
- Load program using USB, run and test on unit.
- Monitor and adjust via touchscreen in operation.
Tips: ensure driver installation for USB; configure correct serial parameters; back up projects frequently.
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Frequently Asked Questions (FAQ)
Q1: What screen size?
A1: 2.8″ color touchscreen.
Q2: What programming tools?
A2: Use YKHMI’s YKBuilder for HMI and PLC logic on FX format devices.
Q3: How to download programs?
A3: Via mini-USB cable—uses TTL and USB connection .
Q4: What communications ports?
A4: Internal TTL and mini-USB for PC.
Q5: Panel cutout dimensions?
A5: Requires 79 × 69 mm panel cutout .
Q6: What voltage?
A6: Standard industrial control voltage, typically 24 VDC (verify datasheet).
Q7: Warranty and support?
A7: Likely one-year support as typical for YKHMI/Alibaba sellers .
Q8: I/O capabilities?
A8: Varies—check seller datasheet. Likely includes digital I/O and basic analog.
Q9: Can it use Modbus?
A9: Likely supports standard industrial protocols, but confirm via documentation.
Q10: Suitable for what applications?
A10: Ideal for small automated machines, packaging units, sensor interfaces.
User Review Summary
No direct reviews found for this exact model, but similar YKHMI units on Amazon/eBay receive praise for value and basic functionality. One eBay seller said it’s “excellent” when sold new .
Comparison with Competing Products
| Feature | YKHMI MM‑12MR‑4MT | Generic HMI‑PLC (e.g., Wecon) | Mid‑range HMI (e.g., Mitsubishi GOT Mini) |
|---|---|---|---|
| Screen size | 2.8″ | 2.4″–5″ | 3.8″–7″ |
| Combo device | Yes | Yes | No |
| Price | ~¥198 / US $65–95 | Similar budget | $200–$400 |
| Program tools | YKBuilder (free) | Vendor-specific | Advanced proprietary OT software |
| Communication ports | USB + TTL | USB, RS‑232/485 | Ethernet, USB, RS‑232/485 |
| Industrial reliability | Budget grade | Varies | High |
Technical Specifications
- Model: MM‑12MR‑4MT‑FE280‑FX‑A
- Display: 2.8″ color TFT touchscreen
- Mounting: 79 × 69 mm panel cutout
- Comm ports: mini‑USB, internal TTL
- Programming via USB; use YKBuilder software
- Power: likely 24 VDC
- Dimensions: 88 × 78 × 38 mm approx.
- I/O: basic PLC digital/analog (verify datasheet)
- Firmware: downloadable via site
Brand or Manufacturer Info
YKHMI (Zhongda) / Shenzhen Zhongda Youkong is a reputable provider of industrial automation products—HMI, PLC, inverters, sensors . They focus on compact automation interfaces, programming tools, and technical support.
Purchase Recommendations
Available from various online retailers: