WiFi Configuration

Raspberry Pi Pico 2W’s device description exposes seven configuration parameters that control the onboard WiFi radio and TCP/IP stack. Unlike the I/O channels, these are configuration parameters (channel="none") rather than cyclically-updated I/O — they are set at project-design time (or via the parameter service, TBD) and applied on the next connection/reboot.

Parameters

Parameter	ID	Type	Default	Description
WiFi SSID	6000	STRING	''	Network name to join
WiFi Password	6001	STRING	''	Network password (WPA2)
WiFi Mode	6002	USINT	0	0 = DHCP, 1 = Static IP
WiFi IP	6003	STRING	192.168.1.50	Static IP address (used when Mode = 1)
WiFi SubnetMask	6004	STRING	255.255.255.0	Static subnet mask
WiFi Gateway	6005	STRING	192.168.1.1	Static default gateway
WiFi DNS	6006	STRING	8.8.8.8	Static DNS server

All parameters are read/write both offline (project configuration) and online.

Setting up WiFi

1. Open the device editor for CODESYS Control Pico2 W in the device tree.
2. Go to the Parameter List tab (or equivalent — da confermare nome esatto tab in questa versione di CODESYS).
3. Set WiFi SSID and WiFi Password to match your network.
4. Choose WiFi Mode:
   • 0 (DHCP) — leave IP/SubnetMask/Gateway/DNS at their defaults; the board obtains an address automatically.
   • 1 (Static) — set WiFi IP, WiFi SubnetMask, WiFi Gateway and WiFi DNS explicitly.
5. Download the application over USB (first-time setup must be wired, since the board isn’t on the network yet).
6. After reboot, the board joins the configured network. Use its IP (shown on your router, or via a network scanner) to switch Communication Settings to WiFi for subsequent logins/downloads.

Note

Changing SSID/password/IP settings while connected over WiFi will drop the current CODESYS connection once the new settings take effect — reconnect using the new address if you changed the static IP.

[Da completare: come viene mostrato l’IP corrente a runtime (es. variabile di sistema, WebVisu, log), comportamento in caso di rete non raggiungibile]

Using the network from ST

Once WiFi is up, ST programs reach the network through the Library section: raw sockets via the standard SysSocket, and certificates/MQTT via neXo’s own libraries — X.509 Certificate Manager and MQTT / MQTTS.