Purchase now: Allen Bradley 1747-AENTR EtherNet/IP Adapter
Purchase now: Atlantechdrives provides you the 1747-AENTR, an advanced EtherNet/IP Adapter Module that breathes new life into legacy Allen Bradley SLC 500 systems. As modern factories transition to the Logix 5000 architecture, entirely ripping out existing SLC 500 control cabinets is incredibly expensive, labor-intensive, and risky. The 1747-AENTR provides the ultimate migration pathway. By removing the old SLC processor and inserting the 1747-AENTR into slot 0, your entire legacy 1746 I/O chassis is instantly converted into modern distributed EtherNet/IP I/O. This allows a new ControlLogix or CompactLogix PAC to take seamless control of your existing field wiring, saving thousands of dollars in rewiring labor and minimizing production downtime.
Technical Specifications of the 1747-AENTR
The 1747-AENTR is a high-speed communication bridge that supports the majority of standard discrete and analog 1746 I/O modules. It features dual Ethernet ports, allowing for advanced, fault-tolerant network architectures.
- Part Number: 1747-AENTR
- Module Type: EtherNet/IP Distributed I/O Adapter
- Compatible System: Allen Bradley SLC 500 (1746 Chassis)
- Network Ports: Two (2) RJ45 10/100 Mbps Auto-negotiating
- Supported Topologies: Star, Linear, Device Level Ring (DLR)
- Maximum I/O Supported: Up to 30 modules (across 3 chassis)
- Configuration: BOOTP/DHCP or physical rotary switches
- Backplane Current Draw: 500 mA at 5V DC
Expert Tips: The Phased Migration Strategy
The 1747-AENTR allows for a phased, low-risk upgrade strategy. Expert Tip: You can mount a new CompactLogix processor in your cabinet, place the 1747-AENTR in the old SLC chassis, and verify your newly written Studio 5000 code using the exact same physical inputs and outputs. If a critical logic issue occurs during commissioning, you can simply swap the old SLC processor back into slot 0 to resume production while you debug the new code. This reverse-compatibility eliminates the «point of no return» associated with full cabinet tear-outs, making automation upgrades stress-free.
Maintenance and Device Level Ring (DLR)
The «R» in AENTR stands for Ring. Because the module features dual embedded Ethernet ports, it natively supports Device Level Ring (DLR) network topologies. You can daisy-chain your CAT5e Ethernet cables from one AENTR to the next, looping the final connection back to the master managed switch. If a forklift severs an Ethernet cable on the factory floor, the DLR protocol automatically detects the break and routes the network traffic in the opposite direction within milliseconds. The PLC will flag a minor network fault, but the machine will continue to run without interruption, turning a catastrophic failure into a scheduled maintenance task.
Frequently Asked Questions (FAQs)
Q: Do all existing 1746 modules work with the 1747-AENTR?
A: The vast majority of standard digital and analog modules are fully supported. However, certain complex specialty modules (like specific motion controllers or communication coprocessors) are not supported. Always check the compatibility matrix in the AENTR user manual.
Q: How do I assign an IP address to the module?
A: You can use the three physical rotary switches on the module to set a static IP address on the 192.168.1.xxx subnet, or set the switches to 999 to use the Rockwell BOOTP-DHCP server utility for network assignment.
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For optimized high-speed data traffic on this Ethernet adapter, it is best integrated into a network backbone powered by Stratix managed switches.
