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- Allen Bradley
- 1794-ACN15
- ControlNet Flex I/O Adapter Module
- USA
- 87.4 mm * 94 mm * 92 mm
- 0.3kg
- Xiamen, China
- New & In Stock
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Technical Report: ControlNet Adapter Module 1794-ACN15
1. Product Overview
The 1794-ACN15 is a FLEX I/O ControlNet network adapter module designed for distributed industrial automation systems. It functions as a communication interface between FLEX I/O terminal bases and a ControlNet PLC network.
This module is widely used in systems requiring deterministic, high-speed communication between a central controller and remote I/O nodes. It supports real-time data exchange and synchronized control across multiple distributed stations.
The “ACN15” designation indicates an enhanced ControlNet adapter variant within the FLEX I/O family, optimized for expanded communication and system performance.
2. Brand Information
- Brand: Industrial Automation Control Brand
- Product Category: Distributed I/O Communication Adapter
- Technology Field: Industrial Fieldbus / ControlNet Systems
- Manufacturing Origin: United States (varies by production batch)
3. Product Series
- Series Name: FLEX I/O Series
- System Type: Distributed modular I/O platform
- Supported Network: ControlNet high-speed fieldbus
- Installation Type: DIN rail / panel-mounted modular system
The FLEX I/O system is designed for scalable remote I/O architectures in industrial control environments.
4. Product Introduction
The 1794-ACN15 serves as a ControlNet adapter module that links FLEX I/O modules to a ControlNet network.
Its core functions include:
- Acting as a ControlNet communication node
- Managing input/output data from FLEX I/O modules
- Synchronizing real-time data with PLC controllers
- Supporting up to 8 I/O modules per node
- Enabling distributed control system architecture
It is commonly deployed in high-speed automation systems requiring precise timing and stable network synchronization.
5. Technical Parameters
5.1 Communication Performance
| Parameter | Value |
|---|---|
| Communication Protocol | ControlNet |
| Network Speed | 5 Mbps |
| Max I/O Modules Supported | 8 modules per adapter |
| Network Topology | Redundant or non-redundant |
| Media Type | Coaxial ControlNet cable |
| Update Mode | Scheduled deterministic communication |
| Maximum Network Distance | up to 1000 m (depending on configuration) |
5.2 Electrical Performance
| Parameter | Value |
|---|---|
| Input Voltage Range | 19.2–31.2V DC |
| Nominal Voltage | 24V DC |
| Backplane Power Output | 5V DC (FlexBus supply) |
| FlexBus Current Capacity | up to 640 mA @ 5V DC |
| Power Consumption | ~4–5 W typical |
| Backplane Current Draw | ~450 mA @ 5V DC equivalent |
| Inrush Current | up to 25 A (short duration) |
5.3 System Capability
| Parameter | Value |
|---|---|
| System Capacity | up to 8 FLEX I/O modules |
| Node Type | ControlNet adapter node |
| Redundancy Support | Yes (with redundant media) |
| Configuration Tool | PLC programming software environment |
| Compatibility | FLEX I/O terminal base system |
5.4 Physical Dimensions & Weight
| Parameter | Value |
|---|---|
| Height | 87.4 mm |
| Width | 94 mm |
| Depth | 92 mm |
| Mounting Type | DIN rail / panel mount |
| Weight | 0.25 kg – 0.30 kg (typical ~0.28 kg) |
| Form Factor | Single-slot ControlNet adapter module |
5.5 Environmental Conditions
| Parameter | Value |
|---|---|
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5%–95% non-condensing |
| Vibration Resistance | Industrial grade (IEC standard) |
| Shock Resistance | Up to 30G |
6. Product Applications
The 1794-ACN15 is used in distributed automation systems requiring stable ControlNet communication and modular I/O expansion.
Typical application areas:
- Automotive production lines
- Large-scale manufacturing systems
- Conveyor and material handling systems
- Packaging machinery
- Process control plants
- High-speed synchronized control systems
- Remote distributed I/O stations
- Machine cell automation systems
Functional role:
- ControlNet network interface node
- Distributed I/O data aggregator
- Real-time communication controller
- Modular expansion gateway for FLEX I/O systems
7. Product Advantages
7.1 Deterministic High-Speed Communication
ControlNet ensures precise timing and predictable data transmission.
7.2 Modular Expansion Capability
Supports up to 8 FLEX I/O modules per node for flexible system design.
7.3 Stable Industrial Networking
Designed for high electrical noise and harsh industrial environments.
7.4 Redundant Network Support
Allows system reliability improvements through dual-media architecture.
7.5 Compact Distributed Design
Reduces central cabinet wiring complexity by enabling remote I/O placement.
7.6 Easy System Integration
Direct compatibility with FLEX I/O base units simplifies deployment.
8. Recommended Models (Same Series / Related Modules)
8.1 FLEX I/O ControlNet / Network Modules
| Model | Description | Key Parameters |
|---|---|---|
| 1794-ACN | Standard ControlNet adapter | Basic 8-module support |
| 1794-ACNR15 | Redundant ControlNet adapter | Dual media redundancy |
| 1794-AENTR | Ethernet/IP adapter module | Dual-port Ethernet communication |
| 1794-ADN | DeviceNet adapter module | 125–500 kbps fieldbus |
| 1794-APB | PROFIBUS adapter module | Up to 12 Mbps communication |
9. Recommended Models (Same Brand – Popular Modules)
| Model | Type | Key Parameters |
|---|---|---|
| 1756-EN2T | Ethernet communication module | High-speed ControlLogix networking |
| 1756-IB16 | Digital input module | 16-channel 24V DC input |
| 1756-OB16E | Digital output module | Electronic sourcing outputs |
| 1769-L33ER | PLC controller | CompactLogix high-performance CPU |
| 1769-PA4 | Power supply module | High-capacity AC input power unit |
10. Summary
The 1794-ACN15 is an enhanced ControlNet FLEX I/O adapter designed for distributed industrial automation systems requiring deterministic high-speed communication.
Its expanded reliability, modular scalability, and redundant network capability make it suitable for large-scale, high-performance automation architectures.