LW3 (Lightware Protocol 3)
LW3 is Lightware’s tree-based ASCII control protocol. Native TCP, WebSocket and serial access depend on the device family and firmware. This entry covers UCX-HC60 network control and the HDMI-TPS-TX200 serial control mode; product discovery, updates and LARA integrations need their own service inventory.
Scope: Native LW3; UCX-HC60 WS/WSS profile and HDMI-TPS-TX200 serial profile
protocol · Catalog reviewed 2026-09-27
By Lightware
Infrastructure Requirements
- Use the target device’s command tree and enabled transport. Match authentication, certificates, CR/LF framing and case rules to its firmware manual. Inventory discovery, updates, serial tunnelling, LARA integrations and media services separately.
Network & Physical Requirements
| Port / allocation | Transport | Connection / signal flow | Feature and requirement | Evidence |
|---|---|---|---|---|
| 6107 (default) | TCP | Control client / LDC → Lightware UCX-HC60 | Optional · Native TCP control Raw TCP LW3 command session UCX-HC60 series FW 2.23.0b4 Enable the selected service; apply device authentication and certificate settings. | Source checked 2026-09-27 8.2–8.4 LW3 access; Applied Network PortsManual v6, 2026-09-23 |
| 80 (default) | TCP | Control client / LDC → Lightware UCX-HC60 | Optional · WebSocket control HTTP management and LW3 WebSocket at /lw3 UCX-HC60 series FW 2.23.0b4 Enable the selected service; apply device authentication and certificate settings. | Source checked 2026-09-27 8.2–8.4 LW3 access; Applied Network PortsManual v6, 2026-09-23 |
| 443 (default) | TCP | Control client / LDC → Lightware UCX-HC60 | Optional · Secure WebSocket control HTTPS management and LW3 secure WebSocket at /lw3 UCX-HC60 series FW 2.23.0b4 Enable the selected service; apply device authentication and certificate settings. | Source checked 2026-09-27 8.2–8.4 LW3 access; Applied Network PortsManual v6, 2026-09-23 |
| 5353 | UDP Multicast: 224.0.0.251 | Local discovery participant → Local discovery peers | Optional · mDNS discovery Local mDNS discovery UCX-HC60 FW 2.23.0b4; LDC/LDU2 discovery Queries and responses in both directions; design any cross-subnet discovery gateway explicitly. | Source checked 2026-09-27 Section 5.8: network-security port table |
| 37421 | UDP Multicast: 230.76.87.82 | LDC / LDU2 workstation / UCX endpoint → UCX endpoint / LDC / LDU2 workstation | Optional · Lightware discovery LDC/LDU2 remote-IP discovery UCX-HC60 FW 2.23.0b4 | Source checked 2026-09-27 Section 5.8: network-security port table |
Physical, link and configuration requirements
physical · Optional · Local serial control
Local RS-232 LW3 command session with Control mode and LW3 protocol selected.
HDMI-TPS-TX200 series local RS-232 control
Match baud, data bits, parity, stop bits and connector pinout.
Source checked 2026-09-27
6.7.1 serial mode; 6.7.4 local protocol selection; 7 LW3 referenceconfiguration · Optional · LARA integrations
Record each enabled LARA module’s configured destination or listener, protocol and port.
Selected LARA modules and controlled devices
LARA includes client and server drivers. A REST client targets a configured device; a TCP server accepts configured client connections. Create network rules from those module settings.
Source checked 2026-09-27
Sections 4.5, 4.6 and 4.12: REST, TCP server and UDP drivers
Gotchas & IT Notes
- ⚠UCX-HC60 provides raw TCP 6107, WS at ws://device/lw3 and WSS at wss://device/lw3. Select only the transports used by the controller.
- ⚠Serial pass-through is different from local LW3 control. HDMI-TPS-TX200 requires Control mode and the LW3 protocol selection.
- ⚠LARA integrations use the configured external device/service endpoints. This entry does not establish a universal LARA port range.