Excellent PLC
Product Introduction
The Allen Bradley 1786-RPFM ControlNet Medium Distance Fiber Repeater Module is a communication interface module designed to extend ControlNet networks using fiber optic media. It enables reliable signal transmission over longer distances by converting and repeating ControlNet signals through fiber optic cables, helping maintain communication quality in large industrial automation systems.
This module is commonly used in ControlNet network architectures where copper cable limitations make longer communication distances difficult. By using 62.5/125 μm multi-mode fiber, the 1786-RPFM allows network signals to travel distances of up to 3000 meters, while maintaining deterministic ControlNet communication performance. The repeater regenerates incoming signals and retransmits them across fiber optic segments, ensuring stable data transfer between network devices.
Designed for integration with ControlNet repeater systems, the module operates from a 5 V DC backplane power source and features low power consumption. Its robust design makes it suitable for industrial environments where high reliability, electromagnetic interference resistance, and long-distance communication are required.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Name | ControlNet Medium Distance Fiber Repeater Module |
| Manufacturer | Allen Bradley |
| Model Number | 1786-RPFM |
| Network Type | ControlNet |
| Communication Media | Fiber Optic Cable |
| Fiber Type | 62.5/125 μm Multi-Mode Fiber |
| Maximum Transmission Distance | Up to 3000 m |
| Input Power | 5 V DC Backplane |
| Backplane Current Draw | 400 mA max |
| Power Consumption | 2 W max |
| Module Function | Signal regeneration and fiber network extension |
| Installation Type | ControlNet repeater module |
| Application | Long-distance industrial network communication |
| Industrial Usage | Distributed automation systems and plant networks |
| Dimensions | 111 × 69 × 101.2 mm |
| Weight | 0.28 kg |
Applications
● Long-Distance ControlNet Networks
Extends communication distances between ControlNet devices using fiber optic technology.
● Large Industrial Facilities
Used in factories where network segments must connect across long production areas.
● Electromagnetic Interference Environments
Fiber optic communication helps maintain stable data transmission in electrically noisy environments.
● Distributed Automation Systems
Supports communication between PLC systems and remote I/O located far from the main control cabinet.
● Industrial Communication Infrastructure
Used as part of network repeater systems that maintain signal integrity across large ControlNet installations.
● Plant-Wide Automation Networks
Enables reliable communication across entire manufacturing plants or processing facilities.
Advantages
● Extended Communication Distance
Supports ControlNet communication distances up to 3000 meters using fiber optic cables.
● High Resistance to Electrical Interference
Fiber optic communication eliminates issues caused by electromagnetic interference.
● Reliable Signal Regeneration
Repeats and regenerates signals to maintain communication quality across long networks.
● Low Power Consumption
Consumes only up to 2 W of power, ensuring efficient operation.
● Stable Industrial Performance
Designed for continuous operation in demanding industrial automation environments.
● Flexible Network Expansion
Allows ControlNet networks to be extended across large industrial installations.
