Allen-Bradley 1756-A7K Ruggedized PLC Chassis for Harsh Environments
1756-A7KAllen-Bradley 1756-A7K 7-Slot ControlLogix PLC Chassis, conformal coated for harsh environments. In stock, tested, 12-month warranty. Fast global shipping.
Request availability, condition, lead time and export shipping details for 80190-600-01-R.
Send this exact part number, quantity and destination country. TOPNLMS will confirm availability, condition and export lead time before quotation.
The Allen-Bradley 80190-600-01-R OIBB Backplane Board is a critical infrastructure component within the Rockwell Automation PLC-5 and 1771 I/O chassis ecosystem. As industrial facilities worldwide accelerate their migration away from end-of-life PLC-5 platforms, the 80190-600-01-R serves both as a direct replacement for failed units and as a transitional bridge component during phased ControlLogix or CompactLogix migration projects. TOPNLMS maintains verified stock of this module, fully tested and ready for immediate dispatch, enabling your engineering team to minimize unplanned downtime and execute controlled system upgrades on schedule.
The 80190-600-01-R is the Output Interface Backplane Board (OIBB) designed for use within the Allen-Bradley 1771 modular I/O chassis. It provides the internal backplane communication path between the chassis rack and installed I/O modules, supporting the parallel backplane architecture that defines the PLC-5 platform. When this board fails, the entire chassis loses communication with its I/O modules — making rapid, verified replacement essential for production continuity.
In legacy PLC-5 installations, the 80190-600-01-R typically operates alongside the 1771-A1B, 1771-A2B, 1771-A3B, or 1771-A4B I/O chassis frames. Engineers performing rack-level replacements should verify the chassis slot count and power supply configuration before installation. The 1771-P4S or 1771-P7 power supply modules installed in the same chassis must remain compatible with the replacement backplane board’s power distribution architecture. No firmware update is required for a like-for-like 80190-600-01-R swap — the board is passive infrastructure and does not carry programmable logic.
| Parameter | Original: 80190-600-01-R | Replacement: 80190-600-01-R (TOPNLMS Stock) |
|---|---|---|
| Part Number | 80190-600-01-R | 80190-600-01-R |
| Module Type | OIBB — Output Interface Backplane Board | OIBB — Output Interface Backplane Board |
| Compatible Platform | Allen-Bradley PLC-5 / 1771 I/O Chassis | Allen-Bradley PLC-5 / 1771 I/O Chassis |
| Compatible Chassis | 1771-A1B, 1771-A2B, 1771-A3B, 1771-A4B | 1771-A1B, 1771-A2B, 1771-A3B, 1771-A4B |
| Backplane Interface | Parallel 1771 Backplane Bus | Parallel 1771 Backplane Bus |
| Communication Protocol | DH+ / Remote I/O (RIO) | DH+ / Remote I/O (RIO) |
| Power Supply Compatibility | 1771-P4S, 1771-P7 series | 1771-P4S, 1771-P7 series |
| Installation Type | Internal chassis board — tool-assisted installation | Internal chassis board — tool-assisted installation |
| Firmware Required | None (passive board) | None (passive board) |
| Country of Origin | USA (Rockwell Automation) | USA (Rockwell Automation) |
| Warranty | OEM standard | 12-Month TOPNLMS Warranty |
| Availability | Discontinued / End-of-Life | In Stock — Ready to Ship |
A successful PLC-5 backplane replacement rarely involves a single component in isolation. When the 80190-600-01-R fails, the root cause investigation typically extends to adjacent modules sharing the same chassis. During the replacement process, engineers commonly audit the 1771-OBD or 1771-OAD discrete output modules seated in the affected rack, as backplane communication faults can cause cascading I/O errors that mask the true failure point. Similarly, the 1771-IBD input modules should be verified for correct seating and termination integrity after the backplane board is replaced.
For facilities operating PLC-5 processors such as the 5/20, 5/30, or 5/40 series, the backplane board replacement is often the first step in a broader migration conversation. Many engineering teams use this opportunity to evaluate a phased transition to the ControlLogix 1756 platform, beginning with the installation of a 1756-DHRIO communication module to bridge existing DH+ and Remote I/O networks. This approach allows the new ControlLogix controller to assume supervisory control while legacy 1771 I/O racks remain operational during the transition period — dramatically reducing the scope of any single maintenance window.
In distributed control architectures where the PLC-5 communicates with remote I/O drops via the 1771-ASB adapter module, the backplane board replacement must be coordinated with a full RIO network scan to confirm all remote drops re-establish communication after the chassis is powered back up. The 1771-SDN DeviceNet Scanner module, if present in the same rack, should also be verified for correct node addressing post-replacement.
For sites where the PLC-5 interfaces with an operator HMI via DH+ — commonly a PanelView 550 or PanelView 900 terminal — the communication path should be validated end-to-end after the backplane board swap. The 1784-KTX or 1784-PCMK communication cards used in engineering workstations for RSLogix 5 programming access should also be confirmed operational before closing out the maintenance work order.
TOPNLMS stocks a range of complementary components to support complete chassis-level replacements, including 1771 series I/O modules, chassis power supplies, and communication adapters. Contact our technical team to confirm cross-compatibility before ordering multiple components for a single chassis restoration project.
Q: Can I replace the 80190-600-01-R without reprogramming the PLC-5 processor?
A: Yes. The 80190-600-01-R is a passive backplane board with no onboard firmware or programmable logic. A like-for-like replacement does not require any changes to the PLC-5 processor program, I/O configuration, or DH+ node addressing. After installation, perform a controlled power cycle and verify all I/O modules re-establish communication before returning the system to automatic mode.
Q: Is the 80190-600-01-R compatible with all 1771 chassis frame sizes?
A: The 80190-600-01-R is designed for specific 1771 chassis configurations. Verify your chassis catalog number (1771-A1B through 1771-A4B) against the board’s physical dimensions and connector layout before installation. TOPNLMS technical support can assist with chassis-to-board compatibility confirmation prior to order placement.
Q: What communication protocols are supported after replacement?
A: The 1771 backplane architecture supports DH+ (Data Highway Plus) and Remote I/O (RIO) protocols natively. The 80190-600-01-R replacement does not alter the communication protocol configuration. All existing DH+ node addresses, RIO rack numbers, and starting group assignments remain valid after the board swap.
Q: How do I handle the physical installation in a live production environment?
A: Backplane board replacement requires full chassis de-energization. Remove all I/O modules from the chassis slots before extracting the backplane board. Document module slot positions and wiring terminations using photographs or written records before disassembly. Reinstall modules in their original positions after the new backplane board is seated and secured. Follow Rockwell Automation’s lockout/tagout procedures throughout.
Q: Can this replacement support a future migration to ControlLogix?
A: Yes. Replacing the 80190-600-01-R restores the existing PLC-5 system to full operational status, providing a stable platform from which a phased ControlLogix migration can be planned and executed without production pressure. A 1756-DHRIO module in the new ControlLogix chassis can maintain communication with the existing 1771 I/O infrastructure during the transition.
Every 80190-600-01-R unit shipped by TOPNLMS is covered by a 12-Month Warranty from the date of delivery. Prior to dispatch, each unit undergoes a multi-point inspection process including visual examination for physical damage, connector integrity verification, and board-level continuity testing. Units that do not meet our quality standards are quarantined and not offered for sale.
In the event of a warranty claim, TOPNLMS provides a direct replacement or full refund within the warranty period, subject to inspection of the returned unit. Our after-sales response target is 24 hours for initial acknowledgment and 72 hours for resolution confirmation. Replacement units are dispatched from our Xiamen warehouse with priority shipping to minimize your system downtime.
For urgent procurement requirements — including same-day quotation, expedited shipping, and multi-unit orders — contact our technical sales team directly. We support purchase orders, proforma invoices, and bank transfer payment terms for qualified industrial buyers.
© 2026 TOPNLMS. All rights reserved.
Original Source: https://topnlms.com
Contact: [email protected] | +86 18359293191
Click Quote This Model and the Part Number field will auto-fill with 80190-600-01-R.