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- Allen Bradley
- 1747-DCM
- ControlNet Adapter Module
- USA
- 15.2 × 5.1 × 15.2 cm
- 0.2kg
- Xiamen, China
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Allen Bradley 1747-DCM Detailed Product Introduction and Technical Specifications
Product Overview
The Allen Bradley 1747-DCM is a Direct Communication Module used in the SLC 500 programmable controller system. It is designed to connect SLC 500 processors to supervisory systems or remote devices through a Remote I/O (RIO) communication link.
This module functions as a communication interface that allows data exchange between SLC controllers and higher-level control systems or distributed PLC networks. It is widely used in industrial automation environments where stable controller-to-controller communication is required.
The 1747-DCM supports bidirectional data transfer, enabling real-time exchange of input and output data between systems. It also provides flexible integration into legacy industrial networks that rely on Remote I/O architecture.
This module is commonly used in manufacturing automation, process control systems, material handling equipment, automotive production lines, and industrial machinery requiring inter-PLC communication and system coordination.
The design focuses on stable communication performance, long-distance signal transmission, and compatibility with existing SLC 500 infrastructure.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Model | 1747-DCM |
| Product Type | Direct Communication Module |
| Product Family | PLC Communication Module |
| Series | SLC 500 Series |
| Communication Method | Remote I/O (RIO) |
| Installation Type | Chassis Slot Mounted |
| Main Function | PLC-to-PLC Data Communication |
Product Series Introduction
SLC 500 Series
The SLC 500 series is a modular PLC system designed for industrial automation control applications.
It supports distributed architecture, flexible I/O expansion, and multiple communication modules for different industrial networking needs.
The system includes processors, input/output modules, analog modules, power supplies, and communication interfaces.
The 1747-DCM belongs to the communication module category within the SLC 500 platform and is used specifically for direct data exchange between controllers or supervisory systems.
It is often implemented in legacy automation systems where Remote I/O communication remains a core part of the control architecture.
Detailed Technical Specifications of 1747-DCM
Main Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 1747-DCM |
| Module Type | Direct Communication Module |
| Series | SLC 500 |
| Communication Protocol | Remote I/O (RIO) |
| Backplane Current Consumption | 360 mA at 5V DC |
| Communication Cable | Belden 9463 or equivalent |
| Connector Type | 6-Pin Phoenix Connector |
| Transmission Speed | 57.6 kbps / 115.2 kbps / 230.4 kbps |
| Communication Distance | Up to 3048 m (depending on speed) |
| Operation Mode | Standard / Extended Node Mode |
| Supported Node Type | Remote I/O Adapter |
| LED Indicators | COMM / FAULT |
| Terminating Resistor | 82Ω / 150Ω |
| Data Transfer Type | Bidirectional |
| Configuration Method | DIP Switch Settings |
| Compatible Controllers | SLC 500 Fixed & Modular PLCs |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5% to 95% Non-Condensing |
| Installation Method | Chassis Mounted |
| Certifications | Industrial Standard Compliance |
| Dimensions | 15.2 × 5.1 × 15.2 cm |
| Weight (kg) | 0.20 kg |
Product Features
1. Direct PLC Communication Capability
The 1747-DCM enables direct communication between SLC 500 controllers and supervisory systems or other PLC networks.
It allows structured data exchange between systems without requiring complex external gateways.
This makes it suitable for industrial environments where multiple PLCs must coordinate operations.
2. Remote I/O Network Integration
The module operates within a Remote I/O communication structure, allowing it to integrate into existing industrial control networks.
It supports communication between distributed devices and centralized controllers over long distances.
This improves system flexibility and reduces wiring complexity.
3. Flexible Communication Speed Selection
The module supports multiple transmission speeds including 57.6 kbps, 115.2 kbps, and 230.4 kbps.
This allows engineers to adjust communication performance depending on network length and system requirements.
4. Industrial-Grade Signal Stability
The 1747-DCM is designed to maintain stable communication in electrically noisy environments such as factories, power stations, and heavy machinery systems.
It uses industrial-grade isolation and structured signaling to reduce communication errors.
5. Configurable Network Structure
The module supports DIP switch configuration, allowing manual setup of node addressing and communication parameters.
This provides flexibility in system integration without requiring software-based configuration tools in older systems.
Product Applications
Industrial Manufacturing Systems
The module is widely used in factory automation systems where multiple PLCs coordinate production lines.
It enables communication between different control zones within a manufacturing facility.
Automotive Production
Automotive assembly plants use the 1747-DCM for coordination between robotic systems, conveyor lines, and inspection stations.
It supports synchronized communication between different PLC-controlled subsystems.
Process Control Systems
In chemical and industrial process environments, the module helps exchange real-time control data between distributed control systems.
This improves process synchronization and operational stability.
Material Handling Systems
Warehousing and logistics systems use the module to coordinate conveyor belts, sorting systems, and automated transport equipment.
It ensures smooth communication between distributed automation components.
Legacy System Integration
The module is commonly used in older automation systems where Remote I/O architecture is still in operation.
It allows continued use of existing SLC 500 infrastructure without requiring full system replacement.
Product Advantages
| Advantage | Description |
|---|---|
| Stable Communication | Reliable Remote I/O data transfer |
| Simple Integration | Works with legacy SLC systems |
| Flexible Configuration | DIP switch-based setup |
| Long-Distance Support | Suitable for extended industrial networks |
| Industrial Durability | Designed for harsh environments |
| Low Power Consumption | Efficient backplane usage |
| Multiple Speed Options | Adjustable communication rates |
| Cost-Effective Solution | Ideal for legacy system expansion |
Recommended Models from the Same Series or Related Series
Related SLC 500 Communication Modules
| Model | Product Type | Main Function | Communication Type | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1747-SN | Scanner Module | Remote I/O Scanning | Remote I/O | 24 × 13 × 7 cm | 1.80 kg |
| 1747-ASB | Remote I/O Adapter | Distributed Rack Communication | Remote I/O | 14.5 × 13.1 × 3.5 cm | 0.168 kg |
| 1747-ACNR15 | Redundant Adapter Module | ControlNet Redundant Communication | ControlNet | 26.3 × 13.8 × 8.8 cm | 2.35 kg |
| 1747-DCM (variant) | Communication Interface Module | PLC Data Exchange | Remote I/O | 15 × 5 × 15 cm | 0.20 kg |
| 1747-BSN | Backup Scanner Module | System Redundancy Control | Remote I/O / Serial | 13.9 × 9.1 × 14.4 cm | 1.10 kg |
Recommended Popular Models from the Same Brand
Popular Industrial Automation Products
| Model | Product Category | Main Features | Application Area | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1756-EN2TR | Ethernet Communication Module | Dual Ethernet Ports | Industrial Networking | 14 × 11 × 8 cm | 0.45 kg |
| 1769-L33ER | Compact PLC Controller | Integrated Ethernet/IP | Machine Automation | 18 × 12 × 9 cm | 0.92 kg |
| 1756-IB16 | Digital Input Module | 16-Point Input Channels | Factory Automation | 15 × 11 × 6 cm | 0.30 kg |
| 1769-IF8 | Analog Input Module | 8-Channel Analog Input | Process Control | 12 × 9 × 5 cm | 0.35 kg |
| 1783-US8T | Industrial Ethernet Switch | Managed Network Switching | Industrial Communication | 16 × 12 × 5 cm | 0.80 kg |
Communication Architecture Overview
The 1747-DCM operates as a bridge between SLC 500 processors and Remote I/O networks.
It maps input and output data between controllers, enabling structured data exchange across distributed systems.
This allows multiple PLC systems to coordinate operations within a unified automation architecture.
The module plays an important role in legacy industrial systems where Remote I/O remains a core communication method.
Installation and Maintenance Characteristics
The module is installed into a standard SLC 500 chassis slot.
Its compact structure allows easy installation without additional hardware modifications.
LED indicators provide real-time status information for communication and fault detection.
Maintenance is straightforward due to its modular design and clear diagnostic indicators.
Industrial Reliability
The 1747-DCM has been widely used in industrial environments for many years due to its stable communication performance and compatibility with legacy SLC systems.
It continues to be used in many operational plants where full system migration has not yet occurred.
Its robust design ensures consistent performance in industrial environments with electrical noise, vibration, and temperature variation.
Summary
The Allen Bradley 1747-DCM is a reliable Direct Communication Module designed for SLC 500 automation systems.
It provides stable Remote I/O communication, flexible system integration, and reliable PLC-to-PLC data exchange capabilities.
Its industrial durability, simple configuration, and long-distance communication support make it an important component in legacy automation systems.
For industrial facilities still operating SLC 500 architecture, the 1747-DCM remains a dependable solution for system communication and control coordination.