DEGSON DF50 Series Remote I/O: Which Scenarios Does It Fit?
Description: The DEGSON DF50 Series Remote I/O is a 12 mm ultra-slim card-style distributed I/O system supporting five mainstream industrial Ethernet protocols: PROFINET, EtherCAT, EtherNet/IP, Modbus TCP and CC-LINK IE Field Basic. A single coupler can expand up to 32 modules. Featuring fully tool-free wiring, dual Ethernet ports, channel-level LED diagnostics and optocoupler isolation, it is widely used in automotive assembly, lithium battery production lines, automated parking garages, food & beverage packaging and other scenarios. It helps users greatly reduce in-cabinet wiring, shorten commissioning cycles and cut maintenance costs.
Keywords: DEGSON DF50, Remote I/O Module, Distributed I/O, PROFINET, EtherCAT, Industrial Automation, In-Cabinet I/O System
Simply put: The PLC no longer needs every signal wire routed back to the control cabinet. DF50 collects field signals locally and transmits them to the PLC via one Ethernet cable.
1. What Is DF50 Remote I/O?
The DF50 Series is a card-style remote I/O system developed by DEGSON, serving as the core node for distributed signal acquisition and actuation inside control cabinets.
The whole system consists of two parts:
Bus Coupler:
It handles communication with the host PLC. One coupler supports up to 32 expandable I/O modules and supports five mainstream industrial Ethernet protocols as follows:
| Model | Protocol | Typical Compatible PLC |
|---|---|---|
| DF50-C-PN-RT | PROFINET-RT | Siemens S7-1200/1500 |
| DF50-C-EC | EtherCAT | Beckhoff, Inovance |
| DF50-C-EN-IP | EtherNet/IP | Rockwell Automation (AB) |
| DF50-C-MD-TCP | Modbus TCP/IP | Universal |
| DF50-C-CC-FB | CC-LINK IE Field Basic | Mitsubishi |
I/O Function Modules:
Cover digital input/output, analog input, counter, IO-Link master and more. The channel density of each module ranges from 4 to 32 channels for hot-swappable and flexible combination.
2. What Is DF50 Remote I/O Used For?
The core value of remote I/O lies in shortened wiring, centralized management and distributed deployment.
In conventional solutions, the signal wire of each sensor and solenoid valve must be individually wired back to the control cabinet, which causes the following problems:
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Dense terminal blocks inside the cabinet and heavy wiring workload;
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High cable costs and crowded cable trunking;
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Troublesome fault diagnosis in later stage; tracing one wire requires sorting out the whole cable bundle.
DF50 remote I/O moves signal acquisition points close to the equipment. Field devices connect to nearby I/O modules, and modules communicate with the PLC in series via one Ethernet cable. The direct benefits:
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Cable saving: Signal cables are largely reduced, only power cable and communication cable remain;
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Cabinet space saving: 12 mm ultra-slim modules for DIN rail mounting with high density;
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Easy maintenance: LED indicator for each channel enables point-level fault location;
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Easy expansion: To add sensors for production line retrofit, just add modules at the end without rewiring;
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Multi-protocol compatibility: The same hardware can adapt to PLCs of different brands by replacing only the coupler, reducing spare part inventory.
3. Features of DF50 Remote I/O
3.1 Ultra-Slim Design, High Density
The module thickness is only 12 mm with a blade-shaped profile. A single 32-channel digital module occupies DIN rail space equivalent to 2~3 terminal blocks in traditional solutions.
3.2 Fully Tool-Free Operation
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Module installation / removal: tool-free latches
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Front connector installation / removal: tool-free
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Wiring / unwiring: spring-cage terminals, no screwdriver required
On-site module replacement is simple: push to release and push to lock, greatly shortening downtime for maintenance.
3.3 Dual Ethernet Ports
Each coupler is equipped with 2 RJ45 ports (10/100 Mbps), supporting line and tree topologies.
3.4 Channel-Level Diagnostics and Isolation
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Independent LED indicator per channel for quick view of input/output status;
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Optocoupler isolation between field layer and system layer for strong anti-interference performance;
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Input modules have built-in anti-interference filters; analog modules support wire-break diagnosis;
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The coupler integrates a power supply module with general alarm and bus fault LED indicators.
3.5 Wide Voltage & Temperature Range, Industrial-Grade Reliability
| Item | Parameter |
|---|---|
| Working Voltage | 24V DC (+20%/-15%) |
| Working Temperature | -25℃ ~ 60℃ |
| Protection Rating | IP20 (in-cabinet) |
| Vibration Resistance | 4g (IEC 60068-2-6) |
| Shock Resistance | 15g (IEC 60068-2-27) |
| EMC | Compliant with EN 61000-6-2 / 6-3 |
4. Application Cases
Case 1: Automotive Parts Assembly Line
Pain point: An assembly line has hundreds of sensors (photoelectric, proximity, pressure) and solenoid valves. In conventional solutions, terminal blocks inside the cabinet exceed 200 positions, wiring takes a long time, and cable re-routing is required when adding stations later.
Solution: Install one DF50 coupler plus several 16DI/16DO modules near each station. Sensors and valves are locally connected. All stations are connected to the Siemens PLC via PROFINET.
Result: In-cabinet wiring reduced by about 60%. Adding new stations only needs adding modules at the end, and commissioning time is shortened from 3 days to half a day.
Case 2: Lithium Battery Coating & Calendering Line
Pain point: Lithium battery production lines are long with numerous measuring points. Tension sensors, temperature sensors and edge-guiding photoelectric sensors are distributed over tens of meters, and long-distance transmission of analog signals is susceptible to interference.
Solution: Deploy DF50 systems distributed along the production line. Analog signals are collected locally by 4AI modules (16-bit resolution, 60μs/channel conversion), and uploaded to the main controller in real time via EtherCAT. High-density 32DI modules collect digital signals centrally.
Result: Analog signals no longer transmit over long distances, improving data stability. The ultra-slim modules fit the compact cabinet space of lithium battery equipment.
Case 3: Automated Parking Garage Control System
Pain point: Each floor of the automated parking garage is equipped with parking photoelectric detectors, limit switches and motor contactors. With high floors and scattered points, conventional hard wiring leads to high cost and difficult fault troubleshooting.
Solution: Deploy one DF50 remote I/O station per floor. 16DI modules collect parking and limit signals, and 16DO modules control contactors and indicator lights. Communication with the main controller is realized via Modbus TCP.
Result: Only one network cable is required between floors, significantly cutting wiring costs. Channel LEDs allow maintenance staff to judge abnormal parking sensors on site.
Case 4: Food & Beverage Packaging Machine
Pain point: Packaging machines perform frequent movements with many solenoid valves and sensors. The equipment has compact space, requiring an I/O system with small size, fast response and vibration resistance.
Solution: Adopt DF50-C-EC (EtherCAT) coupler plus high-speed digital modules. Counter modules receive encoder signals for packaging counting and positioning. The 12 mm ultra-slim modules adapt to compact cabinet layout.
Result: Microsecond-level response of EtherCAT meets high-speed packaging cycle requirements. Tool-free wiring improves factory commissioning and on-site maintenance efficiency.
5. Summary
The DEGSON DF50 Series Remote I/O is a cost-effective I/O system designed for distributed in-cabinet deployment. Its core competitiveness can be summarized into three points:
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Multi-protocol coverage: Five mainstream protocols including PROFINET / EtherCAT / EtherNet/IP / Modbus TCP / CC-LINK IE Field Basic;
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Ultra-slim & tool-free: 12 mm thickness plus fully tool-free wiring to save space, labor and maintenance time;
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Industrial reliability: Channel isolation, LED diagnostics, wide temperature and vibration resistance to meet 7×24h operation of production lines.
The rule to judge its applicability is simple: If your equipment has a large number of scattered sensors/actuators, tight cabinet space and potential future expansion — replacing traditional hard wiring with DF50 remote I/O can bring obvious benefits in wiring cost, commissioning cycle and maintenance efficiency.
6. FAQ
Q1: How many modules can one DF50 coupler drive at most?
A: One coupler can expand up to 32 I/O modules.
Q2: Are I/O modules universal for couplers of different protocols?
A: Yes. DF50 I/O function modules (DI/DO/AI/counter/IO-Link, etc.) are independent of coupler protocols. The same batch of modules can be matched with any coupler of PROFINET, EtherCAT, EtherNet/IP and other protocols.
Q3: DF50 has IP20 protection rating. Can it be installed directly beside field equipment?
A: DF50 is an in-cabinet remote I/O. Its IP20 design requires installation inside an electrical cabinet or junction box. If the site has dust, moisture or washdown, DF50 must be installed in a sealed enclosure with corresponding protection rating (e.g. IP65), or select other DEGSON field I/O products with higher protection grade.
Q4: What are the accuracy and resolution of the analog module? What signal types does it support?
A: Take DF50-M-4AI-UI-6 as an example: 16-bit resolution, 60μs conversion time per channel, total sampling time of 250μs for 4 channels. Voltage ranges support ±10V, 0-10V, 2-10V, ±5V, 0-5V, 1-5V, and it supports 2-wire, 3-wire and 4-wire sensors.
