Compatibility Finding
A Mitsubishi Meldas64 automatic tool-change macro cannot be treated as directly compatible with a Fanuc O-MD control. The evidence identifies the macro language and parameter-dependent expressions as control-specific. The machines are reported to be mechanically identical, but identical mechanics do not establish compatibility between their control programs.
| Confirmed information | Engineering consequence |
|---|---|
| Source control is Mitsubishi Meldas64 | Interpret the existing macro using Mitsubishi syntax and parameter semantics. |
| Target control is identified as Fanuc O-MD | Rewrite the routine using the target control's supported macro language and parameter mapping. |
| Machine mechanics are reported as identical | Reuse the intended mechanical sequence only after confirming how the Fanuc control commands it. |
| No macro listing or parameter map is supplied | Do not approve direct execution; compatibility cannot be established from the available evidence. |
Why Direct Transfer Is Unsafe
The principal failure risk is semantic mismatch, not merely syntax. A statement accepted by both controls could still reference a different parameter, variable, or control function. Sending the Mitsubishi macro directly to the Fanuc control therefore provides no evidence that the intended tool-change sequence, conditions, or interlocks will be preserved.
The designation “O-MD” is reproduced from the evidence and may be typographically ambiguous. Confirm the exact control designation from the machine documentation before selecting the applicable Fanuc programming and parameter references.
Controlled Migration Procedure
- Obtain the complete Meldas64 macro and identify every macro statement, variable, parameter reference, branch condition, and machine-command dependency.
- Document the intended automatic tool-change sequence independently of the Mitsubishi code. Separate required machine actions from control-specific implementation.
- Confirm the exact Fanuc control designation and determine the supported Fanuc syntax and corresponding parameter meanings from the documentation for that control.
- Rewrite each function explicitly. Do not retain a Mitsubishi expression merely because the Fanuc control accepts similar-looking syntax.
- Review the completed mapping before loading or executing the rewritten routine. Any parameter or command without a confirmed target equivalent remains a migration blocker.
Verification Criteria
Verify both the program translation and the resulting machine sequence. The review must show that each source condition and action has a defined Fanuc equivalent and that no unresolved Mitsubishi parameter reference remains. Perform functional testing only under the site's established machine-safety and change-control procedure; the supplied evidence does not define a safe test mode, test sequence, or recovery method.
FAQ
Can a Mitsubishi Meldas64 macro run directly on a Fanuc O-MD?
Compatibility is not established. The evidence states that the controls use different macro languages and parameter-dependent implementations, so translate and verify the routine before execution.
Can I reuse the tool-change sequence if both CNC machines are mechanically identical?
You may use the intended mechanical sequence as the migration basis, but you must rewrite its control-specific commands, variables, and parameter references for the Fanuc control.
What information is required before converting the tool-change macro?
Obtain the complete Meldas64 macro, its parameter and variable meanings, the intended machine sequence, and the exact Fanuc control designation. Without that mapping, direct execution cannot be validated.
