A Padovani lathe with a SINUMERIK 805 may lose retained control data after prolonged shutdown with failed backup batteries. The available evidence identifies two archive files, TEA1 and TEA2, but does not identify the required serial cable, communication settings, control variant, or complete PLC program. Do not erase control memory until those gaps are resolved.
Identify What the Backup Contains
| Item | Supported interpretation | Decision |
|---|---|---|
TEA1 |
CN machine data | Preserve the original and a verified copy. |
TEA2 |
PLC machine data | Do not assume this is the complete PLC program. |
| PLC program | Machine-builder logic that operates buttons, selectors, and other lathe functions | Obtain the program matching the machine wiring and configuration. |
A program from another lathe is not automatically interchangeable. Even machines from the same production series can differ at an input or other machine interface. Confirm the exact machine configuration before loading borrowed logic.
Resolve the Missing Information First
The evidence does not specify the serial cable pinout or transmission parameters. Identify the installed SINUMERIK 805 interface and obtain the applicable documentation before connecting a PC. Do not guess the connector wiring, baud rate, framing, handshake, or software configuration.
Also verify that a complete, matching PLC program is available. The PLC logic makes the lathe functions operate, while the CN handles motion and machining cycles. Restoring only TEA1 and TEA2 may therefore leave the machine inoperable.
Reported Restoration Sequence
The following sequence is a recollected procedure rather than verified product documentation. Confirm every control prompt and archive before performing the memory reset, because that operation is destructive.
- Install a correct replacement backup battery assembly after identifying the fitted hardware. One report mentions three 1.5 V LR6 cells, but the evidence does not confirm that arrangement for every SINUMERIK 805 or Padovani lathe.
- Open the CN original-clear page with the softkeys, then power off the machine.
- Set the commissioning selector to position
2and power on. - Open the CN data functions, start the operation, select all required memory areas, and reset them only after confirming that all necessary backups exist.
- Return the commissioning selector to position
0. - Configure the PC and CN with matching transmission parameters. Start receive mode at the CN first, then start transmission from the PC. Transfer
TEA1andTEA2individually. - Load the matching PLC program through the applicable commissioning function.
Verify Before Releasing the Lathe
Confirm that the CN machine data, PLC machine data, and complete PLC program are present without archive errors. Then test inputs, selectors, tool commands, interlocks, and motion functions under controlled conditions. Keep personnel clear and prevent unintended machining motion until command-to-action behavior has been verified.
If an “incorrect archive” indication appears while restoring data that was previously exported from the same control, recheck the selected archive direction, control mode, file type, and communication settings. The evidence reports this symptom but does not establish a single root cause.
FAQ
What are TEA1 and TEA2 on a SINUMERIK 805?
The available evidence identifies TEA1 as CN machine data and TEA2 as PLC machine data. It does not establish that either file contains the complete PLC program.
What serial cable and settings does a SINUMERIK 805 require?
The evidence does not provide a cable pinout or transmission values. Identify the installed interface and obtain its documentation instead of guessing the wiring or communication parameters.
Can TEA1 and TEA2 fully restore a Padovani lathe?
Not necessarily. A matching machine-builder PLC program may also be required, and logic from another lathe must not be used until its wiring and machine configuration are confirmed compatible.