The Ebyte JGD111 series is an industrial-grade book-style remote Ethernet I/O module operating on the Modbus TCP protocol, featuring dual RJ45 switch ports for daisy-chain cascading, DC 9~36V wide-voltage supply, complete channel-to-channel optocoupler and power isolation, and ultra-compact 30mm slim DIN-rail mounting for seamless integration with Siemens, Mitsubishi, Omron, Schneider PLCs, IPCs, HMIs, and SCADA automation architectures.
Key Features & Advantages
- Standard Modbus TCP Protocol & Wide Compatibility: Native support for standard Modbus TCP discrete inputs, coils, and holding registers (function codes 01, 02, 03, 05, 06, 15, 16) with fast <1ms internal refresh rate, ensuring plug-and-play integration with Siemens S7-1200/1500, Mitsubishi FX/Q series, Omron, Schneider PLCs, and SCADA/HMI platforms.
- Dual RJ45 Ethernet Switch Ports for Daisy-Chain Cascading: Integrated dual-port 10/100M Ethernet switch enables seamless linear and ring topology daisy-chaining between modules, eliminating extra external industrial switches and cutting cabinet wiring costs by up to 50%.
- High-Density Industrial I/O Options: Available in 16DI + 16DO PNP transistor source outputs (0.5A per channel, 1000Hz sampling) for fast electronic actuators and sensors, or 8DO heavy-duty relay outputs (Form A normally open, 250VAC/30VDC 5A) for direct AC contactor and solenoid control.
- Complete Galvanic & Optical Isolation: Comprehensive channel-to-channel optocoupler isolation (2500VDC) and isolated power supply circuitry prevent ground loops, electrical surges, and industrial EMI interference from damaging upstream controllers.
- Ultra-Compact 30mm Book-Style Form Factor: Slim book-style casing (120×30×80mm) with 35mm standard DIN-rail clip and positioning screw holes maximizes cabinet density and simplifies wiring with pluggable spring-cage terminal blocks.
- Wide Voltage Input & Industrial Reliability: Supports DC 9~36V wide-range power supply with reverse polarity protection, -40°C to +85°C operating temperature rating, and CE EMC compliance.
Core Specifications
| Parameter | Technical Specification |
|---|---|
| Communication Protocol | Standard Modbus TCP Protocol (Port 502) |
| Ethernet Interface | Dual RJ45 Ports (RJ45*2), 10/100 Mbps Auto-MDIX with internal switch |
| Supply Voltage Range | DC 9V ～ 36V (with Power Reverse Polarity Protection) |
| Power Consumption | 2W ～ 4W (Active state) |
| Digital Input (DI) Specs | DC 10～28V, NPN / PNP compatible, 7.2kΩ impedance, 1000Hz sampling, optical isolation |
| Transistor Output (DO-P) Specs | PNP Source Output, DC 10～28V, 0.5A per channel, short-circuit & overload protection |
| Relay Output (DO-R) Specs | Form A (Normally Open), 250VAC / 5A or 30VDC / 5A contact rating, galvanic isolation |
| Isolation Voltage | 2500 VDC (I/O to Power, Channel-to-Channel) |
| Internal Bus Cycle | Up to 1 ms high-speed internal refresh |
| Dimensions & Weight | 120 × 30 × 80 mm; Weight: 140g (MDMP1616) / 160g (MDR08) |
| Mounting Method | 35mm Standard DIN Rail (TS35) / Panel Positioning Screw Holes |
| Operating Temperature | -40°C ～ +85°C (Industrial Grade, 5% ～ 95% RH non-condensing) |
Product Selection Guide
Selection Notice: Please select the model that matches your automation signal requirements. JGD111-MDMP1616 is ideal for high-density fast discrete logic (16DI + 16DO Transistor PNP), while JGD111-MDR08 provides 8 heavy-duty dry contact relays for direct AC/DC power switching.
| Model (SKU) | Protocol | I/O Channels | Output Type & Rating | Dimensions | Recommended Application |
|---|---|---|---|---|---|
| JGD111-MDMP1616 | Modbus TCP | 16 DI + 16 DO | PNP Transistor (DC 10-28V, 0.5A) | 120×30×80 mm | High-density sensors, photoelectric switches, solenoid valves, fast PLC expansion |
| JGD111-MDR08 | Modbus TCP | 8 DO | Form A Relay (250VAC/30VDC, 5A) | 120×30×80 mm | Heavy AC contactors, electric heaters, pumps, lighting, high-voltage equipment isolation |
Industrial Installation & Wiring
1. DIN-Rail Mounting: Mount the unit onto standard 35mm DIN rail (EN 50022). Snap the top mounting hook into the rail first, then press down firmly until the bottom spring latch clicks securely into place. Maintain at least 25mm ventilation clearance above and below the module.
2. Power Supply Wiring (DC 9~36V): Connect positive DC power to terminal PWR+ (or V+) and 0V return to PWR- (or V-). The module includes built-in reverse polarity protection and TVS surge suppression.
3. Dual RJ45 Daisy-Chain Cabling: Connect Port 1 to the upstream PLC / Ethernet switch, and Port 2 directly to the next downstream JGD111 module using standard Cat5e/Cat6 STP cables. This linear bus saves external switch ports and simplifies cabinet cable trays.
4. I/O Signal Wiring:
• Digital Inputs (DI): Connect sensor signals to DI0~DI15 and sensor common to COM. Supports both PNP (active high) and NPN (active low) input circuits.
• Transistor Outputs (MDMP1616 DO): Connect load between DO0~DO15 and load GND. Ensure load current does not exceed 0.5A per channel.
• Relay Outputs (MDR08 DO): Connect external AC or DC power in series with the load across the relay contact terminals (NO & COM). Contact capacity is 250VAC/5A or 30VDC/5A.
Practical Application Scenarios
1. Automated Factory Production Lines & Distributed PLC I/O Expansion
Expand discrete I/O capacity for Siemens S7-1200/1500, Mitsubishi, or Omron PLCs across conveyor systems and robotic packaging cells via Modbus TCP over dual RJ45 daisy-chain connections without running long bundles of discrete sensor wires.
2. Building Management Systems (BMS) & HVAC Lighting Control
Integrate with central building automation controllers and SCADA software to monitor zone door sensors, smoke alarms, and emergency pushbuttons while driving 8-channel relay outputs (JGD111-MDR08) to switch heavy HVAC fans, dampers, and architectural lighting circuits.
3. Municipal Water Treatment & Environmental Telemetry Stations
Collect digital pump run status, high/low level float switch signals, and valve feedback in outdoor pump stations, transmitting digital status directly to central SCADA workstations with 2500VDC optical isolation to eliminate ground surge damage.
4. Energy Storage Systems (ESS) & Solar Inverter Distribution Cabinets
Monitor circuit breaker auxiliary contacts, emergency stop buttons, and surge protector status in high-density DC battery racks and solar combiner boxes with compact 30mm DIN-rail modules operating reliably across -40°C to +85°C environments.
FAQ Section
Q1: What are the primary advantages of the dual RJ45 switch ports on the JGD111 series?
The dual RJ45 ports feature an integrated Ethernet switch chip that supports linear daisy-chain topology. You can loop network cables directly from one module to the next without requiring an external industrial Ethernet switch, significantly reducing cabinet hardware cost and cabling clutter.
Q2: How does the JGD111 series communicate with Siemens S7-1200 / S7-1500 PLCs?
The module communicates using standard Modbus TCP (Port 502). In TIA Portal, you can use standard MB_CLIENT instruction blocks to read discrete inputs (Function Code 02) or read/write output coils (Function Codes 01 / 05 / 15) and holding registers (Function Codes 03 / 06 / 16) with standard register addressing.
Q3: What is the load capacity difference between the MDMP1616 (Transistor) and MDR08 (Relay) models?
The JGD111-MDMP1616 provides high-speed solid-state PNP transistor outputs (DC 10~28V, 0.5A per channel) ideal for high-frequency switching and low-power DC loads. The JGD111-MDR08 features 8 mechanical Form A relays with dry contact ratings of 250VAC/5A or 30VDC/5A, suitable for driving heavy AC contactors, motors, and high-power solenoids.
Q4: What is the default IP address and how can the network parameters be configured?
The default factory IP address is typically 192.168.4.101 (Subnet Mask: 255.255.255.0, Port: 502). Users can configure static IP, Gateway, Subnet Mask, Modbus Station ID, and communication timeout settings easily via Ebyte's free Windows Host Configuration Utility or via dedicated Modbus configuration holding registers.
