CAN(FD) optical fiber converter - Guangzhou Zhiyuan Electronics Co., Ltd.

CAN(FD) fiber optic converter hub series

The CAN(FD) Hub-AF×S× series fiber optic converter hubs are equipped with 1 to 2 fiber ports and 1 to 2 galvanically isolated twisted-pair CAN(FD) ports. They support data forwarding between two independent CAN(FD) networks of different baud rates and fiber-optic networks. These hubs can filter unwanted CAN(FD) messages to reduce the load on subnets, and also function as CAN(FD) routers to transmit messages across subnets.

Featuring a full suite of core functions, these devices enable flexible reconfiguration of CAN(FD) network topologies, effectively extend communication distances, and drastically expand the maximum number of network nodes. Their core operating principle lies in the precise conversion of CAN(FD) signals into fiber-optic signals. Thanks to the superior anti-interference capability of optical fiber transmission, the devices are widely deployed in engineering projects with severe electromagnetic interference, fully complying with stringent automotive-grade standards and meeting rigorous requirements of complex industrial environments.

CAN(FD) fiber optic converter hub series

Selection Table

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Model	CANHub-AF2S2
Picture
Development document
Configuration Interface	Type-B USB
Number of CAN FD channels	2
CAN FD arbitration ID segment baud rate	5K～1Mbps
CAN FD Data Phase Baud Rate	100K~5Mbps
Form of CAN FD interface	DB9
Number of optical fiber channels	2-channel multimode fiber with ST connectors (bayonet circular type)
Fiber baud rate	40Kbps～5Mbps
Baud rate of each channel can be set independently	√
Message forwarding capability	28000 frames/s (each channel)
Message forwarding mode	Store-and-forward
Forwarding delay	μs level
Extend communication distance	√
Device cascade	√
Routing function	√
120 Ω terminal resistance	Software enablement
Industrial grade	-40~85℃ 2500VDC Electrical Isolation
Mounting mode	Bracket mounting
Supply voltage	9V~48V
Dimension	118.2mm*72.1mm

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Model	CANHub-AF2S2	CANHub-AF1S1	CANSwitch-AF2S2
Picture
Development document
Configuration Interface	RS232	RS232	RS232
Number of CAN channels	2	1	2
CAN baud rate	5K～1Mbps	5K～1Mbps	5K～1Mbps
CAN interface type	Open Terminal	Open Terminal	Open Terminal
Number of optical fiber channels	2-channel single-mode fiber with SC connectors	1-channel single-mode fiber with SC connector	2-channel single-mode fiber with SC connectors
Fiber baud rate	5K～800kbps	5K～800kbps	100 Mbps fiber optic
Baud rate of each channel can be set independently	√	√	√
Message forwarding capability	6000 frames/s (each channel)	6000 frames/s (each channel)	8000 frames/s (each channel)
Message forwarding mode	Store-and-forward	Store-and-forward	Store-and-forward
Forwarding delay	<3ms	<3ms	<3ms
Extend communication distance	√	√	√
Device cascade	√	√	√
Routing function	√	-	√
120 Ω terminal resistance	Built-in Enable	Built-in Enable	Built-in Enable
Industrial grade	-40~85℃ 2500VDC Electrical Isolation
Mounting mode	Locating Hole Mounting	Locating Hole Mounting	Locating Hole Mounting
Supply voltage	9~26V600mA	9~26V 400mA	9~36V
Dimension	118mm83mm26mm	118mm83mm26mm	178mm102.4mm32mm

Stable, reliable and widely used

The CAN fiber optic converters/hubs of Zhiyuan Electronics have undergone rigorous practical validation and are proven to be stable and reliable. At present, they are widely applied in high-speed railway, subway, coal mine, medical treatment, automotive electronics, building security, elevator control, and other applications to extend transmission distance, modify network topology, and isolate interference.

The fiber interface helps you completely isolate any interference

Optical fiber interface helps you completely isolate any interference and avoid the transmission of lightning surge from CAN bus.

Support the formation of redundant structure of ring network, and realize the function of fault self-recovery.

The Baud rate of each channel can be programmed and set at will

The Baud rate of each channel can be programmed and set arbitrarily, ranging from 5 kbps to 1 Mbps, and infinite cascading can be performed to realize ultra-long-distance communication.

Powerful routing and ID filtering functions can effectively control bus load.

CAN protocol fully conforms to CAN 2.0B specification

CAN protocol fully conforms to CAN 2.0B specification and ISO 11898-1/2/3, and is compatible with CAN 2.0A.

Recommended networking equipment for Siemens fire monitoring system

The CANHUB-AF2S2 and Siemens fire monitoring host is connected as shown in the figure:

Configuration software

1. For the configuration of CAN fiber optic converter/hub, it is only required to set the Baud rate of correct channels, and the filtering setting is only used when necessary. As shown in the figure, a 50kbps bus is extended from 800m to 1600m, and only messages between CAN1, Fiber 1 and Fiber 2 are allowed to communicate with each other. As the transmission delay of optical fiber is 1/2 of that of twisted pair, under the same baud, CAN runs twice the distance when optical fiber medium is used.

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CAN(FD) fiber optic converter hub series

CAN(FD) fiber optic converter hub series

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