Prepared by: Arkmex · Content updated:
General planning guidance; a machine-specific survey and the agreed technical scope take precedence. Official references are listed below.
Engineering takeaways
- Export the EtherCAT device tree and map distributed clocks, safety and third-party slaves before removal.
- A successful retrofit starts with measured machine condition and documented interfaces, not a controller shopping list.
- Retain a tested rollback path until safety, motion, process and production acceptance are complete.
Compatibility checklist
- Re-engineer a Beckhoff-based laser controller by inventorying EtherCAT topology, TwinCAT PLC/NC responsibilities, servo timing, safety and OEM modules before selecting a Bochu architecture.
- Record machine model, serial number, year, working area and automation options.
- Identify controller, industrial PC, servo drives, encoders, fieldbus, remote I/O and height-control hardware.
- Collect electrical, pneumatic, gas, cooling, extraction and safety drawings; mark undocumented changes.
- Measure mechanical accuracy, backlash, gantry squareness, slat-bed condition and axis performance before increasing speed or power.
- Define materials, thickness range, assist gases, daily output, quality limits and target laser power.
Hardware and integration scope
- Decide whether the new Bochu platform will reuse compatible EtherCAT devices or replace the motion and I/O layer.
- Industrial PC or operator console, controller and licensed software matched as one supported set.
- Servo/encoder interfaces, fieldbus couplers, remote I/O, safety relays and galvanic isolation where required.
- Capacitive height control, cutting-head signals, laser modulation, gas valves, chiller and extraction interlocks.
- Documented terminal numbering, cable shielding, grounding, spare I/O and service access for future maintenance.
Implementation workflow
- 01
Define the decision: Record machine model, serial number, year, working area and automation options.
- 02
Capture the machine baseline: Re-engineer a Beckhoff-based laser controller by inventorying EtherCAT topology, TwinCAT PLC/NC responsibilities, servo timing, safety and OEM modules before selecting a Bochu architecture.
- 03
Freeze the integration architecture: Decide whether the new Bochu platform will reuse compatible EtherCAT devices or replace the motion and I/O layer.
- 04
Prepare the outage: Issue the retrofit architecture, I/O matrix, bill of materials, risk register, rollback plan and outage schedule.
- 05
Commission through controlled gates: Matching the connector does not guarantee PDO mapping, synchronization, safety or diagnostic compatibility. Commission axes at low speed, tune following error and height control, validate gas and laser signals, then build process tables progressively.
- 06
Prove production acceptance: Record bus state, cycle stability, axis following error and recovery after controlled slave faults.
Detailed engineering notes
Decision boundary
Keep the surveyed EtherCAT topology and target topology as separate documents. Track device identity, timing and safety dependencies through each proposed substitution rather than copying a cable order into the new system.
Reusable assets and integration limits
The frame, gantry, rails, drives, motors, extraction, gas train and automation should be assessed independently. A part that powers on is not automatically suitable for higher acceleration, a different control loop or higher laser power.
Interface evidence
Identify controller, industrial PC, servo drives, encoders, fieldbus, remote I/O and height-control hardware. Industrial PC or operator console, controller and licensed software matched as one supported set.
Safety case
Trace emergency stops, enclosure doors, light curtains, laser-enable chain, gas pressure, cooling flow, extraction and motion brakes. Each device needs a defined safe response and a recorded validation test after wiring changes.
Controlled commissioning
Verify power distribution and protective earth first, then I/O, fieldbus, axis direction, limits, homing, low-speed motion, servo tuning, height control, gas, laser enable and finally cutting. Do not combine first motion and first laser emission into one test.
Production proof
Use the customer's normal materials, thicknesses and quality criteria. Record nozzle, focus, gas, power, speed, piercing and inspection results, then compare repeatability across more than one sheet.
Handover and support
Train operators on daily use and maintenance staff on backups, alarms, I/O diagnostics and safe replacement procedures. Store the final drawings and software image in at least two controlled locations.
Risks and limitations
- Matching the connector does not guarantee PDO mapping, synchronization, safety or diagnostic compatibility.
- A new controller cannot correct worn rails, backlash, frame distortion or an unstable cutting bed.
- Bypassed or incompletely mapped interlocks create unacceptable personnel and equipment risk.
- Unverified licenses, firmware, servo compatibility or undocumented OEM logic can extend downtime.
Acceptance criteria
- Record bus state, cycle stability, axis following error and recovery after controlled slave faults.
- All emergency stops, doors, light curtains, pressure, cooling and extraction interlocks stop hazardous motion or laser emission as designed.
- Axis travel, homing, limit switches, following error, repeatability and contour accuracy meet the agreed baseline.
- Cut coupons cover representative materials and thicknesses, including holes, corners, common-line cuts and piercing.
- Backups, drawings, parameter sets, licenses, spare-parts list, operator training and maintenance handover are complete.
Beckhoff EtherCAT to CypCut Retrofit Guide
Can existing EtherCAT I/O always be reused?
No. Device profiles, PDOs, firmware, distributed clocks, safety protocol and controller support must all match.
How should the Beckhoff EtherCAT topology be recorded before migration?
Export the available TwinCAT project and record device order, part numbers, revisions, firmware, PDO assignments, cycle timing and safety links; compare them with the actual cabinet.
Which couplers, terminals and slave states must be mapped to CypCut?
Map every coupler and terminal with its function, supported device profile, cyclic data and expected fault response. A shared EtherCAT protocol does not prove interoperability.
Can the installed EtherCAT drives meet the new motion requirements?
Confirm supported drive profiles, feedback, cycle time, synchronization and tuning access with the controller supplier, then validate motion and recovery on the machine.
Can the final hardware be selected from photos alone?
No. Photos help identify the machine, but drawings, controller/drive data, I/O measurements, safety logic and mechanical checks are required before a binding scope.
How is retrofit downtime controlled?
Pre-engineering, cabinet preparation, software staging and acceptance planning are completed before shutdown. The schedule still includes contingency for undocumented wiring or failed legacy parts.
Related technical guides
Official technical references
Platform names describe product families, not guaranteed retrofit compatibility. Final software, controller and license selection follows a machine survey.
