Modbus TCP
Modbus on the network — for PLCs, SCADA and converters
Modbus TCP wraps the familiar Modbus register model in TCP/IP, letting PLCs, SCADA systems and modern equipment exchange data over Ethernet, WiFi or 4G. Wiman gateways speak Modbus TCP both ways — polling networked slaves and serving their own register map to upstream masters.
Where it is used
- PLCs and HMIs that prefer Ethernet to serial cabling
- Networked power meters and inverters
- SCADA polling the gateway as a virtual TCP slave
- Legacy serial equipment bridged via WE62C converter
How Wiman supports it
Master and Slave
- Poll up to dozens of Modbus TCP slaves on the LAN
- Expose mapped tags as a TCP slave for SCADA / OPC tools
- Configurable port (default 502), unit-id range, timeouts
- Concurrent with RS-485 RTU master — one gateway, both buses
- Modbus RTU ↔ TCP transparent conversion via WE62C
Integration tip
Use a static IP or DHCP reservation for the gateway and each Modbus TCP slave to keep mappings stable.
Wiman gateways and converters that speak Modbus TCP
Every model below ships with Modbus TCP support today. Pick by connectivity and tag count — they all speak the same upstream protocol family.
MAX 4G + LAN Gateway
Dual-network flagship gateway with 4G LTE and wired Ethernet.
MAX 4G + WiFi Gateway
Flagship capacity with 4G LTE and wireless LAN backhaul.
PRO 4G Gateway
Secure cellular gateway with SSL, dual servers and battery backup.
PRO Ethernet Gateway
Wired PRO gateway with secure dual-server publishing.
PRO WiFi Gateway
Wireless PRO gateway with SSL and dual-server publishing.
LITE 4G Gateway
Cost-effective 4G gateway for everyday remote monitoring.
LITE Ethernet Gateway
Wired LITE gateway for stable in-plant monitoring.
LITE WiFi Gateway
Wireless LITE gateway for fast, cable-free rollout.
WE62C Modbus RTU ↔ TCP Converter
Industrial RS485 Modbus RTU to Modbus TCP/IP converter.
Building with Modbus TCP?
Send us your device list, protocol mix and target platform — our engineers will recommend the right gateway or converter, and email you a datasheet.