Modbus has become a de facto standard industrial communication protocol, and is now the most commonly available means of connecting industrial electronic devices. Modbus allows for communication between many devices connected to the same RS-485 network, for example, a system that measures temperature and humidity and communicates the results to a computer. Modbus is often used to connect a supervisory computer with a remote terminal unit (RTU) in supervisory control and data acquisition (SCADA) systems.

Features:

• Supports Modbus TCP/UDP master and slave
• Supports Modbus RTU/ASCII master and slave
• Max. TCP masters per serial port: 32 (RevB)
• Read-cache ensures faster Modbus TCP/UDP response
• Supports UDP responder for device discovery (UDP Search)
• Static IP or DHCP network configuration
• Easy firmware update via the Ethernet (BOOTP, TFTP)
• Tiny Web server for serial and network configuration (HTTP)
• Redundant power inputs: PoE and DC jack
• tGW-700: 10/100 Base-TX Ethernet, RJ-45 × 1
• Allows automatic RS-485 direction control
• Power or Signal isolation for i versions
• ±4 kV ESD protection
• Male DB-9 or terminal block connector for easy wiring
• Tiny form-factor and low power consumption
• RoHS compliant & no Halogen