IP Address Assignment¶
Changing the IP address through the SOPAS ET device search without login is restricted by an IP change policy. With the default policy, an IP change without login is only possible within the first 60 seconds after boot. After that, a user role with the required rights is needed, or the policy blocks the change entirely.
Background¶
Since firmware V2.1.0, the picoScan100 stores an IP change policy on the device instead of allowing unauthenticated IP changes; see the picoScan100 release notes.
Policy Options¶
IP change policy: web UI option, behavior, and CoLa EtherCoLaScanMode value.
| Option | Behavior | CoLa value |
|---|---|---|
| Off | The device cannot be found with the SOPAS ET broadcast search, and the IP address cannot be changed through it. | 2 |
| Change IP address without logging in | IP change allowed without login. No time window. | 0 |
| Change IP address only when logged in | Device visible in scans. IP change only with login. | 1 |
| Change IP address up to 1 min after start without logging in | IP change allowed without login only in the first 60 s after boot. After that, login is required. Default setting on picoScan100. | 3 |
The default can differ between device families and firmware versions; for example, device search is enabled by default on multiScan200. Read the active setting from the device before relying on it.
Change the Policy (via Web UI)¶
- Power on the device.
- Open the device IP address in a browser and log in.
- Go to Diagnostics > Cybersecurity > Services and protocols.
- Select one of the four options.
- Save and restart.
The policy is also available through EtherCoLaScanMode in the CoLa interface.
See Set/Read Device Search Mode for
multiScan100,
multiScan200, and
picoScan100,
and the EtherCoLaScanMode variable in the REST API references for
multiScan100,
multiScan200, and
picoScan100.
The IP address itself is set with EIIpAddr, for example
picoScan100 Set IP Address.
For a visual example of changing the address itself rather than the search policy, watch the picoScan100 example video in Getting Started.
Troubleshooting¶
- 60 s window expired: Reboot the device, or log in with credentials.
- Device not in search: The policy Off may be active. Connect to the known IP address, or find it as described in Device Discovery.
FAQ¶
- Can I extend the 60 s window? No. After 60 s, a login is required.
- Which user level is required? No login is required within the 60 s window. Outside it, see User Levels.
- Should I downgrade the firmware? Not recommended. It reduces security.