The **DL8-C-R** is an industrial-grade Remote I/O Module (Web Server Module) manufactured by **M-System** (now part of MG CO., LTD). It serves as a data logger and communication gateway designed for IoT and remote monitoring applications. --- ### ## Technical Specifications Overview The DL8-C-R acts as a bridge between field sensors and IT infrastructure. Below are the key electronic and hardware specifications: | Feature | Specification | | :--- | :--- | | **Power Supply** | 24V DC | | **Input Channels** | Supports discrete, analog, and pulse inputs (via expansion) | | **Communication** | Ethernet (100BASE-TX) | | **Storage** | SD Card Slot (for data logging) | | **Protocols** | Modbus/TCP, HTTP, FTP, SMTP, SNMP | | **Mounting** | DIN Rail Mounting | --- ### ### Key Electronic Components & Functions #### 1. Communication Interface The device features an **RJ-45 Ethernet port**. It functions as a Web Server, allowing users to view data via a standard web browser without needing specialized software. It also supports **Modbus/TCP**, making it compatible with PLC systems and SCADA software. #### 2. Local Data Storage The **SD Card Slot** is a critical electronic component for data redundancy. If the network connection fails, the device continues to log time-stamped data locally. It typically supports SD/SDHC cards. #### 3. Power Management The unit is designed for industrial environments with built-in protection against voltage spikes. It operates on a standard **24V DC** industrial power rail. #### 4. Expansion Bus On the side of the unit, there is an internal bus connector. This allows the DL8-C-R to interface with various **R8 Series I/O modules**, such as: * **Analog Inputs:** 4–20mA or 0–10V sensors. * **Thermocouple/RTD:** Temperature monitoring. * **Discrete I/O:** Status switches or relay controls. --- ### ### Typical Application Diagram ```mermaid graph LR Sensors -->|Analog/Digital| R8_Expansion_Modules R8_Expansion_Modules --> DL8-C-R DL8-C-R -->|Ethernet| Cloud_Server DL8-C-R -->|Web Browser| User_PC/Smartphone ``` --- ### ### Functional Capabilities * **Email Notifications:** Can be programmed to send alerts (SMTP) when specific electronic thresholds (e.g., high temperature) are met. * **FTP Upload:** Periodically sends logged CSV files to a remote server. * **Web-Based Configuration:** All electronic settings and I/O mapping are handled through a GUI accessible via the IP address.