• Skip to main content
  • Skip to header right navigation
  • Skip to site footer
CDP Studio logo

CDP Studio

The no-code and full-code software development tool for distributed control systems and HMI

  • Doc
  • Why CDP
    • Software developers
    • Automation engineers
    • Managers
  • Products
    • Automation Designer
    • HMI Designer
    • Maritime HMIs
  • Services
  • Use cases
  • Pricing
  • Try CDP

CDP Studio Documentation

Hardware - PhoenixContact I/O Modules

PhoenixContact I/O Modules

PhoenixContact provide stackable Input/Output modules for the Axioline F-series bus couplers. These I/O modules are interchangeable between bus couplers in the AXL-F-series product range, such as AXC 3050 and AXC 1050. For more information about the details of each specific PhoenixContact I/O module, please consult the Phoenix Contact website, and do a search for the specific module.

AXL F BK ETH

CDP Studio ModbusIO supports most of the Axioline analog and digital modules for the AXL F BK ETH. To see which specific modules are supported by CDP Studio, add a PhoenixContact-AXL-F-BK-ETH-UDP or a PhoenixContact-AXL-F-BK-ETH-TCP from the ModbusIO Resource tree. Select the IO packet and observe in the PhoenixContactIOModules resource to see which modules are supported.

The AXL F BK ETH bus coupler has a default IP Address of 0.0.0.0, so it must be set by either bootp or via the rotary switch on the bus coupler. The bus coupler reads analog and digital values from modbus address 0x1f40 (8000) and writes analog and digital values to modbus address 0x2328 (9000), in the order the modules are stacked physically.

Note: See the AXL F BK ETH Modbus TCP documentation on the PhoenixContact website for more information about which modbus addresses can be accessed, how to set IP Address and so on.

Configuration

The PhoenixContact-AXL-F-BK-ETH-UDP and PhoenixContact-AXL-F-BK-ETH-TCP are already set-up with a Modbus packet that has the correct read and write address for Modbus communication with the bus coupler, along with other settings required for correct Modbus communication. If required, additional Modbus packets can be added from the PhoenixContactIOModules resources. For instance, a watchdog initialization packet can be sent on Init (SendMode for the Packet is set to Init to only send it once on initialization).

Tools

The PhoenixContact AXL F BK ETH runs a web-interface on http port 80. It can be used to inspect the I/Os and to set watchdog timeout etc.

Notes

Note: Whenever modules are changed, added or removed, make sure to power-cycle the bus coupler, or the internal data-image might not be updated.

Note: Make sure to set the FunctionCode correctly, or there will be communication problems.

Note: In CDP Studio, I/O numbering start at 0, meaning that the first channel has the number 0.

See also Modbus I/O Channel scaling and Watchdog.

Note: For more information about CDP Technologies partnerships, see Our Partners and for detailed information on Phoenix Contact, see the Phoenix Contact website for more information.

The content of this document is confidential information not to be published without the consent of CDP Technologies AS.

CDP Technologies AS, www.cdpstudio.com

Get started with CDP Studio today

Let us help you take your great ideas and turn them into the products your customer will love.

Try CDP Studio for free
Why CDP Studio?

CDP Technologies AS
Hundsværgata 8,
P.O. Box 144
6001 Ålesund, Norway

Tel: +47 990 80 900
E-mail: info@cdptech.com

Company

About CDP

Contact us

Services

Partners

Blog

Developers

Get started

User manuals

Support

Document download

Release notes

My account

Follow CDP

  • LinkedIn
  • YouTube
  • GitHub

© Copyright 2025 CDP Technologies. Privacy and cookie policy.

Return to top