No. 11 - August 1, 2025
A word from the CiA Managing Director
“Tunneling” and “mapping” of the content of CAN data or remote frames are not the same, even if they may use the same underlying protocols. First, it is important to define what constitutes the content (payload) of CAN data and remote frames: this includes the CAN identifier, certain control bits (e.g., IDE, FDF, and DLC), and the optional data field. When this content is “tunneled” via another communication technology (e.g., Ethernet), there is at least one physical CAN network involved. If CAN networks exist on both ends of the tunnel, the interconnected networks behave as a single logical CAN network. If only one side is connected to a CAN network, the setup acts as a kind of “remote tunnel” to a CAN node or a group of CAN nodes.
In contrast, when the content of CAN data or remote frames is transmitted without any physical CAN hardware (i.e., no CAN controller or transceiver is present), this is referred to as “mapping”. In this case, CAN-based communication is transferred over another protocol stack, where the lower layers (e.g., Ethernet) are reused to carry CAN-like messages at the network, transport, or application level. This approach is used, for example, to support legacy CAN-based communication over Ethernet. A notable use case is the transmission of Isobus messages (according to ISO 11783) over HSI (high-speed Isobus), which uses a 1-Gbit/s Ethernet link. Here, Isobus messages are mapped onto dedicated IEEE 1722 protocols, which carry the content of CAN data or remote frames via Ethernet frames. These protocols can be said to either “tunnel” or “map” the CAN frame content, depending on whether real CAN hardware is involved. Currently, CiA members are contributing comments to the ongoing review of the IEEE 1722 specification. If you are interested to support this, please contact me.
iVT Expo in Chicago
From August 20 to 21, CiA is going to participate in the iVT Expo trade show at booth D3 in the debut zone. The exhibition addresses original equipment manufacturers (OEMs) of off-highway vehicles used in agriculture, construction, forestry, material handling, and mining applications.
CiA will also give a presentation about the latest developments in CAN-based networking at the accompanying conference. CAN fellows are invited to discuss any CAN-related topic with a CiA expert. Appointments can be scheduled in advance.
China road show related to CAN XL
Initiated by the MG (marketing group) CAN XL, CiA is organizing three “CiA technology days” to present latest CAN XL developments to the Chinese CAN community. These events are scheduled on November 18 (Shenzhen), November 20 (Beijing), and November 21 (Shanghai). They comprise presentations by several CiA members (e.g., Bosch, C&S Group, Cast, DCD Semi, Infineon, Hongke, Kvaser, NXP, Texas Instruments, Tosun, Vector, and ZLG) as well as CAN XL demonstrations. More details will be available soon on CiA’s website.
CAN Newsletter magazine
The CAN Newsletter magazine provides technical in-depth articles as well as product news and reports. In the June issue, the editorial staff concentrated on devices and software for construction machines as well as other off-highway vehicles.
News ticker
+++ CiA has recently assigned CANopen vendor-IDs to Kolektor Mobility (SI), Teseo (IT), Sywatec Logistic (DE), and MinebeaMitsumi (JP). +++ On behalf of ISO, CiA has also issued a LIN supplier-ID to Coligen China Corp (CN). +++ About 59 % of the CiA members support CANopen. +++ CiA calls for interested parties to standardize body application units (BAU) for campers and caravans. +++ Beginning of July, CiA established the SIG06 CAN FD special interest group, which aims to develop cybersecurity measures for CAN FD. +++ CiA member Maxon (CH), a provider of CANopen motion controllers, has acquired a strategic minority stake of CiA member Synapticon (DE), another CiA member specializing in CANopen-based motion control hardware and software for robotics and machinery. +++ CiA member Nord, providing (CANopen) drives has 48 subsidiaries on all continents: The subsidiary in Poland celebrates its 20th anniversary. +++ Luxshare-ICT (CN) has acquired a 50,1-% stake of the Wiring Systems Division (WSD) from the CiA member Leoni (DE); additionally, Luxshare’s subsidiary TIME Interconnect has acquired 100 % of Leoni's Automotive Cable Solutions (ACS) division. +++
Show your solution on CiA’s product panel wall
CiA offers its members an opportunity to show their CAN-based services and products as part of CiA’s product panel walls on the following trade shows:
- Interlift (October 14 to 17, Nuremberg, Germany): CANopen Lift solutions;
- Agritechnica (November 09 to 15, Hanover, Germany): CANopen, J1939, and Isobus solutions;
- SPS (November 25 to 27, Nuremberg, Germany): CANopen solutions.
Contact CiA office to participate. Each product or service on a CiA product panel is linked to the CiA Product Guide, providing extended visibility beyond the trade show.
Extended deadline: Advertisement on CiA posters
Promote your company on the upcoming editions of CANopen, CANopen FD, or CANopen Lift posters. Advertisement spaces are available for CiA members only. The deadline for booking has been extended to August 27, 2025. The posters are distributed on trade shows, conferences, as well as via further CiA channels and serve as a good opportunity to increase your visibility.
CiA activities
- CiA education and information events
- Charged online seminars
- Charged in-house seminars
- Free-of-charge CiA webinars
- CiA technolgy days
- CiA groups
- CiA trade shows
New CiA members since the last CCN
- Aybey Elektronik (TR)
- Fortronic (CH)
- Hybride Propulsion for Space (FR)
- I-Chin Motor Technology (TW)
- Kolektor Mobility (SL)
- Shimano (JP)
- Sywatec Logistic (DE)
CiA has 740 members (August 1, 2025)
CiA Product Guides
Renewed entries:
- CANopen: frenzel + berg electronic, Robox, Vector Informatik
Editors: Olga Fischer, Holger Zeltwanger (responsible according to the press law)
Advertising: Birgit Ruedel (responsible according to the press law)
CAN in Automation (CiA) e. V.
Kontumazgarten 3
90429 Nuremberg (Germany)
Tel. +49-911-928819-0
AG Nuremberg VR 200497
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