TCP ⇄ Serial conversion

Bridge your RS485 serial equipment and the IP world, in both directions.

TCP → Serial

Your WBox gateway makes equipment connected to an RS485 serial bus reachable over the IP network. In transparent gateway mode, a Modbus TCP master queries the WBox, which forwards the requests on the serial line to Modbus RTU (or BACnet MS/TP) slaves and returns their responses. Your legacy serial equipment becomes reachable from any Ethernet/IP client, with no external serial/IP router and no rewiring.

TCP to serial diagram: a Modbus TCP supervisor reaches serial Modbus RTU or BACnet MS/TP slaves through the WBox

Serial → TCP

Conversely, the WBox publishes a local serial port over the network via TCP. A remote PC connects to it through the VPN and the WBox emulates a virtual COM port on Windows. The manufacturer’s software then talks to the on-site serial equipment as if it were plugged in locally — ideal to remotely configure or troubleshoot an M-Bus network, a meter or a serial PLC.

Serial to TCP diagram: an on-site serial device is published over TCP by the WBox, reachable through a virtual COM port over the VPN