The Fagor 8035 Ethernet interface is not visible in the CNC menus, while only the RS-232 settings appear. Follow the packet from the replacement PC through the cable and CNC interface, but treat the software-option check as the commissioning gate: on this control, Ethernet is a paid option, and an installed connector does not mean the function is active.
Where does the Ethernet data path start and stop?
The request starts at the new PC's transfer application. It passes through the PC network adapter, the direct cable or intervening network equipment, the CNC Ethernet interface, and the Ethernet software function before reaching the control application. A failure at any hop produces a similar user-level symptom, so verify each hop in order.
| Path element | Required condition | Proof before continuing |
|---|---|---|
| PC network adapter | Enabled and connected | The operating system reports an active link |
| Cable or network equipment | Correct conductors and live interfaces | Both ends establish a physical link |
| CNC software option |
Ethernet appears in the active-options list |
The software configuration screen lists it |
| Network addressing | PC and CNC addresses form a valid path | The PC resolves or reaches the CNC address |
| Transfer application | Correct CNC address and service settings | An application-level operation completes |
Work from layer one upward. A transfer-program error cannot diagnose a disconnected cable, and a physical link cannot prove that the CNC Ethernet option is licensed.
Does the direct cable establish a physical link?
The previous installation used a Windows 2000 PC, while the intended replacement uses the CNC Ethernet port through a crossed Ethernet cable. Test the proposed cable before changing CNC parameters. Depending on the interfaces, a direct connection may require crossover wiring or may negotiate automatically; the PC's link state is the deciding measurement.
- Enable the replacement PC's network adapter.
- Connect the PC directly to the Fagor 8035 with the proposed cable.
- Check the PC network status for a physical link. If network equipment is inserted, check its port indication as well.
- If no link forms, test the cable and both interfaces before investigating addresses, firewalls, or transfer software.
A valid link proves only the electrical Ethernet path. Continue only after the PC reports that the interface is connected.
Does the Fagor 8035 have Ethernet activated?
The Ethernet connector and the Ethernet software function are separate commissioning checks. On the Fagor 8035, Ethernet is a paid option. When that option is inactive, the expected Ethernet parameters may be absent and the menus may show only RS-232 configuration.
- Open the CNC main menu.
- Select
+. - Open
Diagnosis. - Open
Configuration. - Open
Software configuration. - Inspect the displayed list of active options for
Ethernet.
| Software configuration result | Meaning | Next action |
|---|---|---|
Ethernet is listed |
The option is active | Proceed to the machine-parameter address setup |
Ethernet is absent |
The option is not active | Contact Fagor Automation through its global sales network for activation |
| Only RS-232 settings are visible | Serial configuration is available; Ethernet activation still requires the option-list check | Use the software configuration screen as the decision point |
Do not spend commissioning time changing PC addresses when Ethernet is missing from the active-options list. The proof for this stage is the literal presence of Ethernet in that list.
How should the CNC and PC addresses be configured?
After confirming the option, open the machine parameters and configure the CNC IP address. The installation information does not identify a parameter number, subnet mask, gateway, application port, or protocol timing value, so read those fields from the control and the transfer application instead of importing values from another machine.
| Item | Where to set or read it | Commissioning rule |
|---|---|---|
| CNC IP address | Fagor 8035 machine parameters | Assign the address planned for this CNC |
| PC IP address | Replacement PC network-adapter settings | Use a unique address that can reach the CNC directly |
| Subnet settings | Both endpoints | For a direct local connection, configure both endpoints for the same local subnet |
| Gateway | Endpoint network settings | It is relevant only when traffic must cross a router; a direct same-subnet path does not use a router |
| Application port | Transfer application and CNC documentation or configuration | Match the actual service setting at both ends; no port number is supplied here |
| Timeout or retry timing | Transfer application | Leave timing changes until link, activation, and addressing pass; no required timing is supplied here |
- Record the existing PC and CNC network values before editing.
- Choose unique PC and CNC addresses within the intended subnet.
- Enter the CNC IP address in the machine parameters.
- Configure the replacement PC to use the corresponding local network.
- Check for duplicate addresses before connecting the CNC to a shared plant network.
The stage passes when both endpoints retain their intended, unique address settings and the PC has a valid route to the CNC address.
Where does communication stop after addressing?
Follow the packet again, now above the physical layer. On a direct local subnet, the PC first resolves the CNC address to a hardware address before the application can establish its session. A missing neighbor entry points toward link, subnet, address, or CNC-interface availability. Successful address resolution moves the fault boundary to the IP or application layer.
| Observation | Likely stopping point | Next check |
|---|---|---|
| No physical link | Adapter, cable, or interface | Test layer-one components |
Link works, but Ethernet is absent from active options |
CNC feature activation | Request activation through Fagor Automation |
| Option active, but no local address resolution | IP address, subnet, duplicate address, or CNC interface state | Compare endpoint settings and inspect the PC neighbor table |
| The CNC responds at the network layer, but the transfer application fails | Application address, service port, protocol selection, or PC security policy | Compare the application's configured endpoint with the CNC settings |
A ping response is useful when the CNC accepts that diagnostic traffic, but lack of a ping reply alone does not identify the failed hop. Pair it with physical-link state and local address-resolution results. The proof for this stage is that the PC can identify and reach the intended CNC endpoint without an address conflict.
How is end-to-end operation verified?
Network reachability is not the final acceptance test. Verify the same operation the replacement PC must perform through the actual CNC communication application.
- Recheck that
Ethernetremains listed underMain menu > + > Diagnosis > Configuration > Software configuration. - Confirm the PC still reports a physical link.
- Compare the application destination address with the CNC IP address stored in the machine parameters.
- Confirm the application's service and port selections match the configured CNC service; obtain the required values from the control configuration or product documentation.
- Run a non-destructive connection or read operation.
- Disconnect and reconnect the application, then repeat the read to prove the path is repeatable rather than an existing session artifact.
Accept the commissioning result only when the replacement PC establishes a fresh application session with the intended Fagor 8035 and completes the read operation without falling back to RS-232.
FAQ
Can I activate Fagor 8035 Ethernet from the IP settings?
No. First check Main menu > + > Diagnosis > Configuration > Software configuration. If Ethernet is absent, contact Fagor Automation through its global sales network for activation.
Does an Ethernet connector mean the option is active?
No. The physical connector can be present while the paid Ethernet option is inactive. The active-options list, not the connector, decides whether to proceed with IP configuration.
Does a successful ping prove the Fagor 8035 connection works?
No. It proves network-layer reachability only when the control responds to that traffic. Final verification requires a fresh session from the actual transfer application and a completed, non-destructive read from the intended CNC.