Allen Bradley 1747-ACN15-A ControlNet Adapter Module

Manufacturer: Allen-Bradley

Product Line: SLC 500

Country of Origin: United States

HS / Tariff Code: 8517.62.0050

Module Type: ControlNet Remote I/O Adapter Module

Network Interface: 1 x BNC connector (non-redundant media)

Local Interface: 1 x RJ-45 connector (Network Access Port / NAP)

I/O Capacity: Max 3 I/O chassis / Max 30 I/O slots

Backplane Current: 900 mA maximum @ 5V DC

Node Addressing: Hardware-configured via top rotary switches

Diagnostics: Integrated 7-segment display and status LEDs

Lifecycle Status: End of Life / Discontinued

Distributed Remote I/O Networking: 1747-ACN15-A ControlNet Adapter Module coordinates remote data exchange between localized 1746 I/O chassis and centralized master controllers without placing a dedicated CPU in every panel.

Slot 0 System Adapter Deployment: 1747-ACN15-A ControlNet Adapter Module installs directly into the processor slot (Slot 0) of a remote 1746 chassis to convert backplane data into high-speed ControlNet protocol signals.

Multi-Chassis Extension Network: 1747-ACN15-A ControlNet Adapter Module links up to 3 physical 1746 expansion chassis (up to 30 hardware slots total) into a single remote network node drop.

SLC-to-SLC Distributed Architecture: Couples remote hardware assemblies to an SLC 5/04 or 5/05 central system utilizing a 1747-SCNR ControlNet Scanner module.

Cross-Platform Legacy Integration: 1747-ACN15-A ControlNet Adapter Module bridges older 1746 I/O components directly into higher-tier control architectures, including ControlLogix, CompactLogix, and PLC-5 ControlNet scanner networks.

Deterministic Process Plant Synchronization: 1747-ACN15-A ControlNet Adapter Module regulates data-sensitive operations requiring exact, predictable token-passing timing (Scheduled Messaging), such as water treatment skids, packaging lines, and conveyor control.

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High-Speed Deterministic Network: Allen Bradley ControlNet Adapter Module communicates at a fixed rate of 5 Mbps on ControlNet, delivering predictable response times via scheduled token-passing messaging.

Slot 0 Placement: Allen Bradley ControlNet Adapter Module mounts directly into the dedicated CPU slot of a remote 1746 chassis to orchestrate the entire rack’s backplane data.

30-Slot Maximum Expansion: Allen Bradley ControlNet Adapter Module powers and manages up to 3 interconnecting 1746 I/O chassis under a single node address.

On-Board Diagnostics: Allen Bradley ControlNet Adapter Module incorporates a built-in 7-segment digital display and front LEDs for immediate status checks and error code parsing.

Hardware Address Selection: Allen Bradley ControlNet Adapter Module utilizes integrated top-facing rotary switches for physical, software-free configuration of the network node number.

Local Programming Access: Allen Bradley ControlNet Adapter Module includes a dedicated Network Access Port (NAP) via an RJ-45 interface for localized diagnostic tools and PC terminal hookups.

Flexible Controller Cross-Compatibility: Allen Bradley 1747-ACN15-A connects 1746 I/O architecture seamlessly into SLC 500, PLC-5, and Logix-class automation systems.

Q: Can the 1747-ACN15-A module be used as a standalone PLC processor in an SLC 500 chassis?
A: No, the 1747-ACN15-A Allen Bradley is strictly a remote network adapter module and cannot execute user ladder logic programs; it must be installed in Slot 0 of a remote chassis to route I/O data back to a master controller.

Q: Does the 1747-ACN15-A adapter support ControlNet media redundancy?
A: No, the 1747-ACN15-A Allen Bradley features only a single BNC network connector (Channel A) and does not support media redundancy, unlike the dual-port 1747-ACN15 module.

Q: What is the maximum number of 1746 I/O slots that a single 1747-ACN15-A can control?
A: A single 1747-ACN15-A Allen Bradley can manage up to 30 slots across a maximum of 3 interconnected 1746 I/O chassis on one single network node.

Q: How do you configure the network node address for the 1747-ACN15-A module?
A: The network node address for the 1747-ACN15-A Allen Bradley is configured physically via the hardware rotary switches located on the top of the module before installation.

Q: What software tool is required to configure the network scheduling for the 1747-ACN15-A?
A: You must use RSNetWorx for ControlNet software to schedule the network bandwidth and establish the I/O connection parameters for the 1747-ACN15-A Allen Bradley.

Q: What does a flashing red LED or specific error code on the 1747-ACN15-A 7-segment display indicate?
A: A flashing red LED or an active error code on the 1747-ACN15-A Allen Bradley onboard display typically indicates a network configuration mismatch, duplicate node address, or backplane communication fault.

Q: Can the 1747-ACN15-A interface 1746 I/O modules directly with a ControlLogix controller?
A: Yes, the 1747-ACN15-A Allen Bradley acts as a cross-platform bridge, allowing a ControlLogix system equipped with a ControlNet bridge module (e.g., 1756-CNB) to control the legacy 1746 I/O rack.

Q: Is the 1747-ACN15-A still actively manufactured by Rockwell Automation?
A: No, the 1747-ACN15-A Allen Bradley has been officially discontinued by the manufacturer, but you can purchase fully tested and certified replacement units directly from our spare center.

1747-ACN15-A ControlNet Adapter Module

1747-ACN15-A ControlNet Adapter Module

1747-ACN15-A ControlNet Adapter Module

1747-ACN15-A ControlNet Adapter Module

Email: sales@sparecenter.com