Allen-Bradley 1786-XT/A ControlNet Coaxial Trunk Terminating Resistor
$123.00
$320.00
Description
Allen-Bradley 1786-XT/A ControlNet Coaxial Trunk Terminating Resistor
The Allen-Bradley 1786-XT/A, also cataloged as the 1786-XT/A ControlNet coaxial terminating resistor, operates as a dedicated hardware component for impedance matching and signal reflection suppression within Allen-Bradley ControlNet deterministic communication networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1786-XT/A |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.04 lbs |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | Passive (None) |
| Nominal Impedance | 75 Ω |
| Connector Type | BNC male connector |
| Compatible Media | RG-6 coaxial cable |
| Storage Temp | -40 deg C to +85 deg C |
| Compliance | UL Listed, CE Marked, RoHS Compliant |
ControlNet Network Determinism & Bus Integrity
In deterministic Fieldbus architectures, signal integrity depends directly on transmission line impedance matching across high-frequency backplane bus communication velocity Licences and physical trunk lines. The Allen-Bradley 1786-XT/A prevents signal reflections along RG-6 coaxial trunk segments by providing exact 75 Ω termination at physical network boundaries. Without precise line impedance matching, standing waves introduce packet loss, jitter, and node dropouts in deterministic EtherNet/IP and ControlNet topologies.
Frequently Asked Questions
Q: Where must the 1786-XT/A terminating resistor be physically placed in a ControlNet network?
A: One 1786-XT/A terminator must be connected directly to the open port of the BNC T-connector located at each of the two physical end-nodes of a coaxial trunk segment.
Q: Does the 1786-XT/A resistor require external DC power or backplane current?
A: No. The 1786-XT/A is a passive network component and consumes zero backplane or external DC electrical current.
Field Installation Guidelines
- Ensure proper mechanical connection by twisting and fully latching the BNC male connector onto the standard BNC T-connector port.
- Maintain continuous shield grounding practices across the entire RG-6 coaxial cable run to minimize electromagnetic interference.
- Verify that exactly two 75 Ω terminating resistors are installed per isolated cable segment; under-termination or double-termination degrades communication waveform quality.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
Featured
Complementary products
Express Delivery
Fast shipping for your urgent needs.
Large Inventory
Extensive stock ensures quick availability.
Premium Quality
Genuine, high-grade PLC & DCS components.
24/7 Customer Support
Reliable service for clients worldwide.