Modbus TCP IO
Remote I/O module communicating via Modbus TCP/IP over standard Ethernet.
Universal. Simple. Reliable.
The Busbeck Modbus TCP IO module runs on Modbus TCP/IP — the industry's most widely used and best-documented protocol. It integrates instantly with your PLC, SCADA and DCS systems using your existing Ethernet infrastructure.
Simplicity
Can be commissioned immediately over standard TCP port 502 — no additional software or driver installation required. Use the web-based interface to flexibly map I/O channels to Holding Registers, Coils and Input Registers.
Universal Compatibility
The open Modbus TCP/IP standard ensures compatibility with Siemens SIMATIC, Schneider Modicon, ABB AC500, Mitsubishi MELSEC and all major SCADA platforms such as Ignition and Wonderware. True vendor-independent integration.
Multi-Master Access
Multiple masters can connect simultaneously — SCADA server, HMI and PLC can all communicate at the same time. Default support for 8 concurrent TCP connections enables flexible network topology design.
Reliability
Stable communication with low latency and high data integrity over 10/100 Mbps Ethernet. Proven robustness in demanding industrial electromagnetic environments, with a wide operating temperature range.
Frequently Asked Questions
01 Which PLCs and SCADA systems are compatible?
Any system supporting the Modbus TCP/IP standard — including Siemens SIMATIC, Schneider Modicon, ABB AC500, Mitsubishi MELSEC and popular SCADA platforms such as Ignition, Wonderware and iFIX.
02 How many masters can connect simultaneously?
The module supports 8 concurrent TCP connections by default, allowing SCADA server, HMI and PLC to connect at the same time. This value can be adjusted via the configuration interface.
03 Can the Modbus register map be customised?
Yes. Via the web-based configuration interface you can freely map I/O channels to Holding Registers (4x), Input Registers (3x), Coils (0x) and Discrete Inputs (1x).
04 Does it work behind a firewall or NAT?
Since it uses the standard TCP port 502, network administrators can easily configure port forwarding. Remote access via VPN tunnel is also supported.
Explore our product range
Browse our compact remote I/O modules for PROFINET, Modbus, EtherNet/IP, PROFIBUS, DeviceNet and more.