Anybus CompactCom B40 Modbus Serial Interface - EtherCAT

The CompactCom B40 Modbus Serial for EtherCAT enable simple communication between your device and the EtherCAT network.

The CompactCom B40 Brick gives you the flexibility to add your own connectors and network isolation. An alternative is to use the ready-made connector board from HMS. The B40 Brick is ideal for device manufacturers who are looking for a semi-integrated solution where connector flexibility, size and cost are key elements.

By implementing the CompactCom B40 Brick into your product line, you can get connected to other B40 supported networks simply by switching to another CompactCom B40 Brick.

The CompactCom B40 Brick enables communication between your device and EtherCAT. The Brick supports generic device profiles. It also comes with a dual port switch implemented in the network processor — the award-winning Anybus NP40.

Features & Benefits

  • A ready-made EtherCAT connectivity solution
  • Flexibility to add your own connectors and peripherals to limit size and costs
  • Easy mounting to your host PCB design
  • Short in-design with free assistance from HMS ensures a fast time to market
  • ETG pre-certified for network compliance (enables faster network certification)
  • Fast data transfer: Up to 1486 bytes of I/O data in each direction.
  • IIoT ready: (EoE) Includes Email Client, Web server with customizable content, SSI functionality and FTP server
  • CANopen over EtherCAT (CoE)
  • DS301 compliant
  • Network Identity customization
  • Ethernet over EtherCAT (EoE)
  • File access over EtherCAT (FoE)
  • Support for process data remap from the network
  • Network cycle time down to 100 μs
  • Flash-based file system
  • Solid security: Mandatory software signatures prevent unauthorized software to be downloaded to the module. Furthermore, encryption is used to prevent illicit copying

Technical specifications

Dimensions  (L•W•H)
36 x 36 x 8 mm or 1,41 x 1,41 x 0,31"
Operating temperature -40 to +85 °C  or  -40 to +185 °F
Power requirements 3.3 VDC, +/- 0.15 VDC
Application Interface

UART interface running the Modbus RTU protocol. max 625kbps

Profile support Generic device
Ethernet features Integrated 2-port switch, IT functions (FTP server, web server with JSON and SSI support) 
Internal file system Configurable up to 28 MB

Standard dual row 1.27 mm headers, 50 & 56 pins
Possibility for mechanical fastening with two screws

Certifications CE, CULUS, RoHS

Ordering information

Order Code  AB6794
Included components            

CompactCom B40 Modbus Serial Interface EtherCAT

Optional Accessories            

AB6666: B40 Connector Board for EtherCAT

3 year guarantee. For purchasing instructions and terms and conditions, see: How to buy

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Numéro de téléphone

Commercial: +33 3 67 88 02 50


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