Six-plus-one serial ports distributed and bridged from a single unit. Two independent 10/100 LAN ports span two network segments, with 6 × RS-485 plus 1 × RS-232. One-to-many distribution, automatic merging on overlapping destinations and reverse routing, plus a Modbus TCP gateway with RTU master, slave and transparent modes.

A typical cabinet holds five or six serial devices, which used to mean stacking several one- or two-port converters. Six-plus-one ports covers the cabinet in a single box — fewer units and fewer power supplies.
LAN-A and LAN-B each have their own MAC and IP, so the device network and the monitoring network can stay separate, or be configured as a redundant pair. The device network need not be exposed to the office segment just to be monitored.
Black-box event logging keeps the communication history in the device, so a field anomaly does not have to be reproduced to be diagnosed — which matters most for intermittent faults that never reproduce on demand.
Serial data does not need an external splitter just to reach one more place.
The built-in Modbus TCP gateway maps downstream devices to a single IP for the host to poll. On the serial side the unit can act as an RTU master polling actively, as an RTU slave read by an existing PLC, or stay purely transparent and carry the original protocol through untouched. Different ports on the same unit can take different roles.
Per-port traffic, link state and error counters are visible live in the interface. A TF card provides long-term logging that keeps accumulating through a network outage, and an IP allow-list limits which sources may connect. Serial transceivers are isolated, which helps on long buses and across differing ground references.
Send us the device list, baud rates and the existing host system, and we will suggest a port allocation and role configuration.