Allen-Bradley 1786-TPS ControlNet Coaxial Straight T-Tap – 1786 Series Industrial Network Connector
When a ControlNet node drops off the network mid-production, the consequences cascade instantly — PLCs lose synchronization, motion axes fault out, and an entire automated line grinds to a halt. In high-throughput manufacturing environments, every minute of unplanned downtime translates directly to lost output and costly recovery procedures. The physical layer of your ControlNet network is only as reliable as its weakest connector, and a substandard or incompatible T-tap is often the silent culprit behind intermittent communication faults that are notoriously difficult to diagnose.
The Allen-Bradley 1786-TPS is a 1-meter coaxial straight T-tap designed specifically for Rockwell Automation’s ControlNet industrial network architecture. Within the 1786 series — Rockwell’s dedicated ControlNet media and connectivity product line — the 1786-TPS occupies the role of the primary node-attachment component, providing the deterministic, repeatable signal path that ControlNet’s time-division multiplexing protocol demands. ControlNet remains one of the most widely deployed deterministic industrial networks globally, particularly in automotive, oil & gas, and heavy manufacturing sectors where synchronized I/O and peer-to-peer messaging are non-negotiable.
Technical Specifications
- Part Number: 1786-TPS
- Manufacturer: Allen-Bradley / Rockwell Automation
- Series: 1786 ControlNet Media
- Type: Coaxial Straight T-Tap
- Cable Length: 1 meter (drop cable included)
- Network Protocol: ControlNet (ANSI/IEC 61158)
- Connector Style: Straight (inline trunk connection)
- Weight: 80 g
- Compatibility: Rockwell Automation ControlNet trunk cable systems
Key Features & Benefits
- Deterministic Signal Integrity: Engineered to maintain ControlNet’s strict timing requirements, ensuring reliable scheduled and unscheduled data transfers across all connected nodes.
- Straight-Body Design: The inline straight configuration minimizes cable stress and simplifies installation in panel-mount and cabinet environments where space is constrained.
- 1-Meter Drop Cable: The integrated 1 m coaxial drop cable provides sufficient reach from the trunk to most node mounting positions without requiring additional cable extensions.
- Genuine OEM Component: Sourced from Allen-Bradley’s authorized supply chain, ensuring full compatibility with Rockwell Automation’s ControlNet specification and system warranties.
- Plug-and-Play Installation: BNC-style coaxial connections allow tool-free attachment to the trunk cable, reducing installation time and the risk of wiring errors.
- Robust Industrial Construction: Built to withstand the vibration, temperature cycling, and EMI environments typical of heavy industrial facilities.
Industry & Equipment Applications
- Automotive Manufacturing: Body-in-white welding lines, paint shop conveyors, and powertrain assembly cells using ControlNet for synchronized motion and I/O.
- Oil & Gas: Distributed control systems on offshore platforms and refineries where deterministic communication is required for safety-instrumented functions.
- Food & Beverage: High-speed packaging and filling lines where ControlNet coordinates multiple drives and vision systems.
- Metals & Mining: Rolling mill drives, conveyor systems, and crusher controls networked via ControlNet for real-time coordination.
- Water & Wastewater: SCADA-integrated pump stations and treatment plant automation using legacy ControlNet infrastructure.
- General Discrete Manufacturing: Any facility running Allen-Bradley PLC-5, SLC 500, or ControlLogix systems with ControlNet I/O chassis.
System Integration & Compatible Parts
The 1786-TPS is designed to integrate seamlessly within the broader Rockwell Automation ControlNet ecosystem. Commonly paired components include:
- 1786-RG6: ControlNet RG-6 coaxial trunk cable (sold per meter)
- 1786-TPYR / 1786-TPYS: Right-angle T-tap variants for space-constrained installations
- 1786-BNC: BNC terminator plugs for trunk cable end-termination
- 1756-CNB / 1756-CNBR: ControlLogix ControlNet bridge modules
- 1771-ACN15 / 1771-ACNR15: PLC-5 ControlNet adapter modules
- 1747-SCNR: SLC 500 ControlNet scanner module
Our Quality Assurance Process
At Konmask.com, every Allen-Bradley component undergoes a structured verification process before shipment:
- Source Verification: Parts are procured exclusively from traceable, authorized distribution channels with full documentation of origin.
- Visual & Physical Inspection: Each unit is inspected for label authenticity, connector condition, and packaging integrity against OEM standards.
- Functional Cross-Reference: Part numbers, date codes, and revision markings are cross-referenced against Rockwell Automation’s published product databases.
- Secure Packaging: Components are packed in anti-static, moisture-resistant packaging with individual part identification to prevent transit damage.
How to Order
- Submit an inquiry via the Contact Us page or email support@konmask.com with your required quantity and delivery timeline.
- Our technical team will confirm availability, lead time, and provide a formal quotation within 1 business day.
- Upon PO confirmation, we arrange shipment with full tracking and export documentation as required.
- For urgent requirements, please indicate URGENT in your subject line for priority handling.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on PLC, DCS, and industrial network components — not a generalist distributor.
- B2B-First Service: Tailored for MRO buyers, plant engineers, and system integrators who need reliable sourcing with technical support.
- Global Shipping: We ship to manufacturing facilities worldwide with proper export documentation and customs support.
- Competitive Lead Times: Extensive supplier network enables us to source both current-production and legacy/obsolete parts efficiently.
- Technical Expertise: Our team understands ControlNet architecture — we can advise on compatible components and system-level compatibility questions.
Frequently Asked Questions
Q: What is the difference between the 1786-TPS and the 1786-TPYR?
A: The 1786-TPS features a straight-body connector orientation, while the 1786-TPYR has a right-angle body. The choice depends on your cable routing and panel layout — the straight version is preferred when the drop cable exits parallel to the trunk.
Q: Can the 1786-TPS be used with ControlLogix systems?
A: Yes. The 1786-TPS is compatible with any ControlNet node regardless of the PLC platform — ControlLogix, PLC-5, or SLC 500 — as long as the node uses a standard BNC ControlNet port.
Q: Is this a new or refurbished part?
A: Please specify your requirement when submitting an inquiry. Konmask.com can source both new OEM stock and tested-serviceable units depending on availability and your budget requirements.
Q: What is the maximum number of T-taps allowed on a ControlNet segment?
A: Rockwell Automation’s ControlNet specification allows a maximum of 48 nodes per segment, with tap spacing and total trunk length governed by the network design rules in publication CNET-UM001. Our team can assist with network topology review if needed.
Q: Do you provide a certificate of conformance or traceability documentation?
A: Yes. Certificates of conformance and sourcing documentation are available upon request for quality-critical procurement processes.
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