1.Product Overview
The Allen-Bradley 1794-ACNR15 FLEX I/O™ ControlNet Adapter serves as the communication backbone for distributed I/O systems, enabling deterministic data exchange across industrial networks. Designed for Rockwell Automation’s FLEX platform, this module bridges local 1794 I/O modules to ControlLogix® processors using high-speed ControlNet™ (CIP Network) protocol. Its hardened aluminum housing (-40°C to +70°C) features IP20 protection (upgradeable to IP65 with kit) and withstands 5g vibration per IEC 60068-2-6. With dual BNC ports supporting trunk-line redundancy, it achieves ≤2ms cycle times for real-time control. Key features include node-level diagnostics (LED status indicators for network health), electronic keying, and auto-baud rate detection for plug-and-play operation with Studio 5000®.
2.Critical Technical Specifications
Core performance parameters:
- Network Protocol: ControlNet (CIP) compliant with IEC 61158 Type 2
- Data Rate: 5 Mbps via RG-6/U coaxial (BNC connectors)
- Node Capacity: Up to 30 FLEX modules per adapter (max. 512 I/O points)
- Backplane Power: Supplies 5V DC logic (750mA max) and 24V DC field power (1.2A max)
- Synchronization: ±500µs coordinated sampling across modules
- Redundancy: Auto-switch <50ms during trunk-line faults
- Isolation: 1500V AC port-to-backplane
- EMC Compliance: EN 61000-6-2/4 (10V/m RF immunity)
- Certifications: UL 61010-1, ATEX II 3G, CE, cULus
3.Targeted Applications
Demanding industrial networks:
- Automotive Assembly Lines: Synchronized robot weld timing across 50+ stations
- Bottling Plants: High-speed fill/cap machine coordination (200+ bottles/min)
- Water Treatment Facilities: Plant-wide valve network synchronization
- Palletizing Systems: Multi-zone conveyor control with ≤5ms response
- Food Processing: Temperature/pressure monitoring in washdown zones (IP65 kit)
- Mining Operations: Vibration-tolerant data exchange in crusher control cabinets
- Discrete Manufacturing: Multi-cell robotic workcell integration
4.Competitive Advantages
Operational excellence drivers:
- Network Resilience: Dual-media redundancy maintains uptime during cable breaks
- Time Optimization: Pre-scheduled bandwidth allocation for critical I/O
- Space Savings: Replaces centralized cabinets – 40% reduction in control room footprint
- Installation Simplicity: Auto-addressing via 1770-KFD configuration tool
- Diagnostic Depth: Module-level LED codes identify faults within 3 seconds
- Legacy Integration: Backward-compatible with 1771 I/O via 1794-ASB adapters
- TCO Reduction: Eliminates 25% cabling costs using distributed topology
5.Functional Capabilities
Advanced network management:
- Deterministic Control: Reserved bandwidth for motion-critical signals
- Peer Messaging: Produced/Consumed tags for inter-PLC data sharing
- Real-Time Diagnostics: Nodal traffic monitoring via RSNetWorx® software
- Hot-Swap Operation: Replace adapters without network interruption
- Firmware Security: Encrypted updates prevent unauthorized modifications
- Synchronized Outputs: Precision-timed pulse commands across multiple racks
- Bandwidth Optimization: UCMM messaging for non-critical data
| Attribute | Specification |
| Product Series | FLEX I/O™ |
| Module Type | ControlNet Communication Adapter |
| Function | Interfaces FLEX I/O modules with ControlNet networks |
| ControlNet Ports | 2 (BNC connectors for daisy-chaining; 50Ω termination) |
| Data Transfer Rate | 5 Mbps (fixed) |
| Node Address Range | 1-99 (software-configurable) |
| I/O Capacity | Supports up to 30 FLEX I/O modules (max 256 I/O points) |
| Backplane Current Supply | 850 mA @ 5V DC (for connected I/O modules) |
| Update Time | Configurable RPI (Requested Packet Interval): 2-750 ms |
| Deterministic I/O | Supports scheduled I/O transfers for real-time control |
| Network Media | RG-6 coaxial cable (recommended Belden 9463) |
| Max Cable Distance | 1,000 m (3,280 ft) per segment with repeaters |
| Max Nodes per Segment | 48 devices |
| Isolation | 1500V AC (field-to-logic) |
| Status Indicators | <u>Module LEDs:</u>
• OK (Green/Red)
• CNET A/B (Green/Red)
• MOD (Green)
• I/O (Green) |
| Connection Type | 10-pin removable terminal block (1794-TB3 series) for I/O power |
| Power Requirements | 24V DC (19.2-30V DC):
• 100 mA typical (logic)
• 1.2A max (I/O power pass-thru) |
| Operating Temperature | -20°C to 60°C (-4°F to 140°F) |
| Certifications | UL, CE, c-UL, ATEX/IECEx Zone 2, Class I Div 2 |
| Compatibility | • Controllers: ControlLogix®, CompactLogix™
• Software: RSNetWorx® for ControlNet, Studio 5000®
• I/O Modules: All 1794 FLEX I/O™ modules |
| Dimensions (H x W x D) | 87 mm x 35 mm x 80 mm (3.43 in x 1.38 in x 3.15 in) |
| Weight | 200 g (0.44 lb) |
| Firmware Updates | Flash-upgradable via ControlNet |
Packaging & Shipping
Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are
perfectly.
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