StamPLC

SKU:K141

Description

StamPLC is an IoT programmable logic controller designed for industrial automation and remote monitoring. The product is based on the StampS3A control module, which not only delivers powerful processing capabilities but also provides efficient wireless connectivity. In terms of control, StamPLC offers 8 opto-isolated digital inputs and 4 relay outputs (supporting both AC and DC loads), along with a GPIO.EXT port and 2 Grove interfaces, making the integration of various sensors and actuators both simple and reliable. Meanwhile, through the onboard PWR-CAN and PWR-485 interfaces, the device can be seamlessly integrated into industrial fieldbus networks, enabling remote data transmission and centralized control. For human-machine interaction, the product features a 1.14-inch color display, a RESET/BOOT button, 3 user buttons, and a buzzer, which facilitate real-time parameter configuration and status monitoring, and can alert users in the event of anomalies. To withstand harsh industrial environments, StamPLC supports a wide voltage input (DC 6–36V) and is designed for DIN rail mounting to ensure secure installation; the built-in Micro SD card slot further facilitates data storage and firmware updates. Additionally, its environmental monitoring system integrates an LM75 temperature sensor and an INA226 voltage/current sensor for real-time feedback on device operation, while the RTC (RX8130CE) module ensures accurate time synchronization and log recording. The factory firmware automatically uploads data to M5’s EZDATA cloud platform, generating monitoring pages and offering users convenient remote cloud access and control. This product is suitable for industrial automation, remote monitoring, smart manufacturing, and other applications.

Tutorial

Arduino IDE

Arduino IDE

This tutorial will show you how to control the StamPLC device using the Arduino IDE

Note

Features

• StampS3A Control Module (ESP32-S3FN8)
• EZData Cloud Monitoring
• 8 Opto-isolated Digital Inputs
• 4 Relay Outputs (AC/DC)
• 1.14-inch Color Display (ST7789v2)
• PWR-CAN & PWR-485 Interfaces
• Wide Voltage Input (DC 6–36V)
• Voltage/Current Sensor
• Internal Temperature Sensor
• User Buttons
• Micro SD Card Slot
• DIN Rail Mounting
• Buzzer
• Grove Interface
• RTC Module
• Development Platform
  • UIFlow 2.0
  • Arduino IDE
  • ESP-IDF

Includes

• 1 x StamPLC
• 4 x Mounting Accessories
• 4 x Screw Clip Fasteners

Applications

• Industrial Automation and Remote Control
• Distributed Control Systems
• Smart Energy Management
• Smart Manufacturing

Specifications

Learn

Download Mode

Input channel integrates optocoupler isolation, supports DC5~36V high-level/low-level signal input acquisition, adaptable to different types of sensor inputs

1. Wiring method for low-level signal input sensor:
- COM connects to the sensor's positive power
- INPUT connects to the sensor's input signal

2. Wiring method for high-level signal input sensor:
- COM connects to the sensor's negative power
- INPUT connects to the sensor's input signal

Schematics

• STamPLC_CPU Schematics PDF
• STamPLC_IO Schematics PDF

1/2

Pinmap

PWR-485 & PWR-CAN

RGB & User Buttons A/B/C

• Controlled via PI4IOE5V6408 (0x43)

Micro SD Card Slot

Sensor

LCD

Buzzer

Relays and Optocouplers

• Controlled via AW9523B (0x59)

• Relay Control

• Optocoupler Output

• Optocoupler Input

PORT.A & PORT.C

• PORT.A

• PORT.C

Model Size

Datasheets

• INA226AIDGSR
• LM75BDP
• ST7789V2
• PWR-485
• PRW-CAN
• AW9523B
• PI4IOE5V6408
• EL3H4

Softwares

Quick Start

• StamPLC QuickStart

Arduino

• StamPLC Arduino Guide
• StamPLC Arduino Library

UIFlow 2.0

• Coming soon...

ESP-IDF

• StamPLC User Demo

PlatformIO

[env:m5stack-stamp-s3]
platform = espressif32
board = esp32-s3-devkitc-1
framework = arduino
upload_speed = 1500000
build_flags =
    -DESP32S3
    -DCORE_DEBUG_LEVEL=5
    -DARDUINO_USB_CDC_ON_BOOT=1
    -DARDUINO_USB_MODE=1

lib_deps =
    M5StamPLC=https://github.com/m5stack/M5StamPLC
    M5Unified=https://github.com/m5stack/M5Unified

Protocol

• Internal I2C device communication addresses

• Modbus

**Register Map:**

1. **Coils (Read/Write)**
   - **Address 0:** Relay 1 output (true/false)
   - **Address 1:** Relay 2 output (true/false)
   - **Address 2:** Relay 3 output (true/false)
   - **Address 3:** Relay 4 output (true/false)

2. **Input Registers (Read-only)**
   - **Address 0-7:** Inputs (true/false) - 8 registers
   - **Address 8-9:** Temperature (FLOAT32) - 2 registers
   - **Address 10-11:** Bus Voltage (FLOAT32) - 2 registers
   - **Address 12-13:** Shunt Current (FLOAT32) - 2 registers

Easyloader

Video

• StamPLC Product Introduction and Case Demonstration

video