Select an IO-Link master by matching the exact EtherNet/IP controller model, port class and power requirements to your device schedule. Verify device mapping, IODD integration and parameter backup procedures in the intended PLC engineering environment before purchase.
Shown as a configuration reference. Availability and the equipment offered for your project are confirmed separately.
Confirm controller protocol and engineering environment
EtherNet/IP is one of several industrial Ethernet protocols supported by multiprotocol IO-Link masters. The TURCK TBEN-L5-8IOL offers PROFINET device, EtherNet/IP device, Modbus TCP server and CC-Link IE field basic protocols [S1]. However, protocol availability varies between models, and not every IO-Link master supports EtherNet/IP or operates all listed protocols simultaneously.
Identify the exact PLC model, controller firmware version and required engineering software before requesting an IO-Link master. The device IODD describes IO-Link device functions, but PLC integration also depends on the master’s network files and the controller environment. Request confirmation that the proposed master model supports EtherNet/IP in the intended configuration and that the supplier will provide the EDS file or other engineering deliverable needed for your controller.
Build the port and power schedule first
Prepare a complete device schedule showing every sensor, valve interface or actuator that will connect to the master. Record the IO-Link designation, Class A or Class B requirement, supply current, connector pinout and whether any ports will operate in standard digital input or output mode. Class A and Class B ports use different power arrangements; verify both the master specification and each device requirement rather than assuming connector compatibility.
Calculate the total power budget including simultaneous actuator demand and voltage drop through installed cables. Confirm supply grouping, protection and restart behavior from the exact master instructions. The port count alone does not establish suitability; an unused port is not the same as verified capacity for an unspecified future load.
Map process data and diagnostics to controller requirements
Define which signals are needed cyclically for machine operation and which parameters or diagnostics are used during setup or maintenance. This distinction affects controller programming effort and the value of IO-Link integration. An IO-Link device can provide process values, parameters, device information and diagnostic data through the same connection [S2]. Confirm how these data types reach the PLC and what the machine program does with invalid or missing values.
Request a demonstration of the agreed process values, status information and parameter operations in the actual PLC engineering software. An integration matrix should identify responsibilities for device configuration, controller programming and any higher-level data use. The following table provides buyer-input fields for a comparable equipment request.
| Integration area | Required project information | Supplier evidence for acceptance |
|---|---|---|
| Controller protocol | PLC model, firmware, engineering software and EtherNet/IP requirements | Confirmed master model, EDS file and example project for stated controller |
| Device schedule | Device identity, Class A/B designation, supply current, connector and installation location for each port | Port-by-port schedule showing power budget, unused capacity and digital I/O allocation |
| Process data mapping | Required cyclic values, units, valid-state indication and controller program behavior | PLC tag mapping, data-format documentation and live data exchange demonstration |
| Diagnostics and events | Required device status, parameter access and event notifications | Controller integration of diagnostic information and agreed response to invalid data |
| Parameter management | Backup procedure, replacement test and configuration ownership | Witnessed parameter restoration with compatible device and handover of accepted configuration |
| Network functions | Topology, addressing, recovery behavior and any redundancy requirement | Network diagram, address assignment and verified recovery sequence |
Test device identification and replacement procedures
A commissioning test should go beyond observing a changing sensor value. Include a disconnected device, an unexpected device identity and the agreed recovery sequence. Confirm how invalid data is indicated to the EtherNet/IP controller and what the machine program does with it. These behaviors must be designed into the application rather than inferred from an indicator light on the master.
If parameter backup and automatic device replacement are part of the purchase, demonstrate the procedure with a compatible device during acceptance. Verify that measurements, units, switching behavior and diagnostics return as intended. Record any operator steps and controller response while data is unavailable. Keep a copy of the accepted configuration, software versions and device descriptions for future maintenance.
Define installation environment and network topology
Specify whether the master belongs in a cabinet or directly on the machine. State exposure to coolant, washdown, dust, vibration, sunlight and ambient temperature as applicable. Match the enclosure rating, cable assemblies, protective caps and mounting position as a complete installation. A protection claim on the module alone does not define the service rating of every connector assembly.
Provide the network topology, addressing scheme and recovery requirements for the EtherNet/IP architecture. Confirm whether redundancy, integrated switch functions or additional network services are needed. Check these requirements against the exact proposed master model rather than assuming all multiprotocol modules offer identical network features.
Separate OEM harness requests from ODM development
OEM requirements may include labeled cable assemblies, preconfigured port maps, documentation or machine-specific packaging. ODM development may concern a modified enclosure, custom interface board or software integration. Provide complete electrical and data requirements, intended annual use and destination so that a manufacturer or integrator can distinguish configuration work from new product development.
Do not assume that a branded reference product can be privately labeled or modified. Changes to power distribution, connectors or communication behavior need their own feasibility review and validation. Ask for a response separating standard hardware, engineering services, accessories and any development evidence. Send the EtherNet/IP controller model, device list and port schedule with the inquiry to receive a proposal that can be verified against the machine.
Key inputs for your IO-Link master request
- PLC model, engineering software and required EtherNet/IP protocol support
- Network topology, addressing and recovery requirements
- Complete IO-Link device list with available IODD files
- Port-by-port Class A/Class B and digital I/O schedule
- Device supply currents and simultaneous actuator demand
- Connector pinouts, cable lengths and harness requirements
- Mounting location, media exposure and ambient conditions
- Process-data mapping, diagnostics and invalid-data behavior in PLC program
- Parameter backup, replacement test and project-file handover
- OEM harness/labeling or ODM enclosure/interface development scope
Discuss your EtherNet/IP PLC integration and device schedule with IndustryApex engineers to receive an IO-Link master proposal matched to your controller environment and application requirements.
Define your equipment requirements
Review the IO-Link master buying guide for the complete equipment scope.
Discuss this equipment project ↗ · OEM requirements · ODM requirements. Configuration and feasibility are reviewed for your application.
Frequently asked questions
Does every IO-Link master support EtherNet/IP protocol?
No. Protocol support varies between models. Some masters are designed for a single protocol while multiprotocol modules may support EtherNet/IP alongside other options. Confirm that the proposed master model supports EtherNet/IP in your intended configuration and that the supplier will provide the required network files for your controller.
What is the difference between Class A and Class B IO-Link ports?
Class A and Class B ports use different power supply arrangements. Class B ports provide an additional electrically separated supply via specific connector pins, allowing higher current devices to be connected. Check both the master specification and each device requirement rather than assuming compatibility based on connector appearance alone.
Can IO-Link devices from different manufacturers be used with one master?
IO-Link provides a standardized device interface, but device revision, power requirements and data integration still need verification. Obtain the IODD file for each device, confirm power budget and connector compatibility, then test the intended measurements and parameters in your actual controller environment before acceptance.
Does the IODD file complete EtherNet/IP PLC integration automatically?
No. The IODD describes the IO-Link device and helps configuration tools interpret its functions. EtherNet/IP PLC integration also depends on the master, controller protocol files and engineering environment. Request an example project for your controller and verify data formats, valid-state signals and parameter operations during commissioning.
What should be verified when testing device replacement?
Test the agreed device-identification and parameter-restoration procedure with a compatible replacement. Verify that measurements, units, switching behavior and diagnostics return as configured. Confirm controller indication and program response while data is unavailable. Record operator steps and keep the accepted configuration and device descriptions for maintenance.
Can an IO-Link master be supplied for OEM or ODM projects?
OEM harness kits, labeling or preconfigured systems may be available as configuration services. ODM development involving enclosure changes, custom interface boards or modified communication behavior requires separate feasibility review. Provide complete requirements, annual use and destination with your inquiry. Customization scope, permitted branding, development responsibilities and minimum quantity are confirmed in the project quotation.
Reference information
- Compact Multiprotocol I/O Module for Ethernet -8 IO-Link Master Channels
- IO-Link Technology: How It Works & What You Need to Know - ifm
Reference data and images explain equipment configurations. IndustryApex engineers confirm the offered model, specification and commercial scope in your project quotation.