Allen-Bradley 1747-ASB SLC 500 Remote I/O Adapter | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1747-ASB is a Remote I/O Adapter Module designed for use with the SLC 500 modular chassis. It enables SLC 500 I/O chassis to function as remote I/O racks on an Allen-Bradley Remote I/O (RIO) network, allowing distributed control architectures with PLC-5 or SLC 5/04 and 5/05 processors as the scanner. This page provides full technical specifications, compatible replacement models, application guidance, and a structured selection guide for engineers and procurement teams.
Technical Specifications
- Part Number: 1747-ASB
- Manufacturer: Allen-Bradley / Rockwell Automation
- Series: SLC 500
- Module Type: Remote I/O Adapter
- Network: Allen-Bradley Remote I/O (RIO) — 1771 Blue Hose
- Baud Rates Supported: 57.6K, 115.2K, 230.4K bps
- Chassis Compatibility: SLC 500 modular chassis (1746-A4, 1746-A7, 1746-A10, 1746-A13)
- I/O Rack Addressing: Up to 3 logical racks per physical chassis
- Power Consumption: 800 mA @ 5 VDC (backplane)
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Storage Temperature: -40°C to 85°C
- Relative Humidity: 5% to 95% (non-condensing)
- Weight: Approx. 1200 g
- Certifications: UL, CE, CSA
- Form Factor: Single-slot SLC 500 module
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as replacements or functional equivalents for the 1747-ASB. Compatibility depends on your network topology, chassis type, and scanner processor. Always verify firmware and rack addressing requirements before substitution.
- 1747-ASB/C — Later revision of the same module; direct drop-in replacement with identical pinout and addressing
- 1747-ASB Series B — Earlier production series; functionally equivalent, verify baud rate switch positions
- 1771-ASB — PLC-5 platform Remote I/O Adapter for 1771 I/O chassis; not a direct replacement but serves the same RIO network role on a different chassis family
- 1747-SN — SLC 500 Remote I/O Scanner; complementary device (scanner side), not an adapter replacement
- Third-party RIO adapters — Some vendors offer 1747-ASB-compatible adapters; confirm DIP switch compatibility and RIO protocol compliance before deployment
Note: Always cross-reference catalog numbers and firmware revisions with your system integrator or Rockwell Automation distributor before substitution in a live system.
Why Choose the Original Model
- Proven reliability in legacy SLC 500 distributed I/O architectures with decades of field deployment
- Full Rockwell Automation support including firmware updates, replacement parts, and technical documentation
- Seamless integration with RSLogix 500 programming environment and existing RIO network configurations
- Guaranteed protocol compliance with Allen-Bradley RIO 1771 Blue Hose networks
- Stable DIP switch addressing for rack/group configuration without additional configuration software
- Sourced from verified channels — Konmask.com supplies tested, authentic, or quality-inspected surplus units
Typical Applications
- Distributed I/O expansion for SLC 5/04 and SLC 5/05 processor-based control systems
- Remote I/O rack integration in automotive assembly lines and material handling systems
- Legacy plant modernization projects requiring RIO network continuity
- Food & beverage processing lines with geographically distributed I/O points
- Water/wastewater treatment facilities using SLC 500 SCADA architectures
- Oil & gas upstream/downstream control panels with remote field I/O
- Spare parts inventory for maintenance of existing RIO-based installations
System Compatibility
The 1747-ASB is designed to operate within the following system context:
- Scanner Processors: SLC 5/04 (1747-L541/L542/L543), SLC 5/05 (1747-L551/L552/L553), PLC-5 family with RIO scanner capability
- Host Chassis: SLC 500 modular chassis — 1746-A4, 1746-A7, 1746-A10, 1746-A13
- Network Cable: Belden 9463 (Blue Hose) or equivalent shielded twisted-pair RIO cable
- Power Supply: Compatible with 1746-P2, 1746-P4, 1746-P7 SLC 500 power supplies
- Software: RSLogix 500, RSLinx Classic for network configuration and diagnostics
- Not compatible with: ControlLogix / CompactLogix EtherNet/IP or DeviceNet networks without a protocol gateway
Selection Guide
Use the following criteria to confirm the 1747-ASB is the correct module for your application, or to identify the appropriate alternative:
- Step 1 — Identify your scanner: Confirm your host processor supports RIO scanning (SLC 5/04, 5/05, or PLC-5). If using ControlLogix, consider a RIO-to-EtherNet/IP gateway instead.
- Step 2 — Confirm chassis type: The 1747-ASB fits SLC 500 modular chassis only. For 1771 PLC-5 chassis, use the 1771-ASB.
- Step 3 — Determine rack addressing: Plan your rack/group/slot addressing before ordering. The 1747-ASB supports up to 3 logical racks per physical chassis.
- Step 4 — Check baud rate: Match the adapter baud rate (57.6K / 115.2K / 230.4K) to your existing RIO network setting via DIP switches.
- Step 5 — Assess quantity and revision: For multi-rack systems, order sufficient units. Verify revision (Series A/B/C) matches your existing installed base for consistency.
- Step 6 — Evaluate new vs. surplus: New units may no longer be available from Rockwell. Quality-inspected surplus from Konmask.com is a cost-effective, tested alternative.
Quality Assurance & Sourcing
- All units sourced by Konmask.com undergo visual inspection, functional verification, and power-on testing prior to shipment
- Modules are stored in ESD-safe, climate-controlled environments to preserve component integrity
- Traceability documentation available upon request for MRO and maintenance procurement teams
- We supply genuine Allen-Bradley / Rockwell Automation surplus and refurbished units — no counterfeit or clone modules
- Warranty: 90-day functional warranty on all tested surplus units; extended warranty available on request
How to Order
- Online: Add to cart directly from this page — stock levels are updated regularly
- Email RFQ: Send your BOM or part list to [email protected] for bulk pricing and lead time confirmation
- Phone/WhatsApp: +0086 19859288691 — available for urgent procurement inquiries
- Lead Time: In-stock units ship within 1–3 business days; out-of-stock items subject to sourcing lead time (typically 5–15 business days)
- Export & International Shipping: Available — contact us for customs documentation, HS code confirmation, and freight options
Replacement & Compatibility FAQ
Q: Can I replace a 1747-ASB with a 1771-ASB?
A: No. The 1771-ASB is designed for PLC-5 / 1771 I/O chassis. The 1747-ASB is for SLC 500 modular chassis. They are not interchangeable.
Q: Is the 1747-ASB still in production?
A: The 1747-ASB has reached end-of-life (EOL) status from Rockwell Automation. Quality-inspected surplus units remain available through authorized distributors and MRO suppliers like Konmask.com.
Q: What is the difference between Series A, B, and C?
A: Minor hardware revisions affecting component sourcing and minor firmware updates. All series are functionally equivalent for standard RIO adapter applications. Verify DIP switch labeling may differ slightly between revisions.
Q: Can the 1747-ASB work on an EtherNet/IP network?
A: No. The 1747-ASB is a Remote I/O (RIO) protocol device. To integrate legacy RIO I/O into an EtherNet/IP system, a protocol gateway (e.g., ProSoft Technology RIO-to-EtherNet/IP gateway) is required.
Q: How many 1747-ASB modules can I have on one RIO network?
A: A single RIO network supports up to 32 logical racks. The number of 1747-ASB adapters depends on your chassis configuration and rack addressing scheme.
Q: Do you provide a test report or inspection certificate?
A: Yes. Inspection and functional test documentation is available upon request for MRO procurement and maintenance records.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: [email protected] | +0086 19859288691
