MOXA MGate MB3270 2-Port Advanced Modbus Gateway, 0 to 60°C Operating Temperature

Protocol Conversion: Converts between Modbus TCP, Modbus RTU, and Modbus ASCII protocols.
Dual Serial Ports: Features 2 x DB9 male serial ports that support RS-232, RS-422, and RS-485 standards (software selectable). Auto Data Direction Control (ADDC) for RS-485: Simplifies RS-485 wiring by automatically controlling data flow.
Selectable 120-ohm termination and pull high/low resistors for RS-485. Optional 2 kV Isolation: "-I" models (e.g., MGate MB3270I) offer 2 kV optical isolation for serial signals, providing enhanced protection against electrical interference. 15 kV ESD protection for all serial signals.
2 x 10/100BaseT(X) RJ45 Ethernet ports with auto MDI/MDI-X. Supports a single IP address with an Ethernet cascade function, eliminating the need for an external Ethernet switch in some setups, simplifying wiring, and saving costs. 1.5 kV magnetic isolation protection for Ethernet.
Can operate as a Modbus TCP Client (Master) and/or Modbus TCP Server (Slave). Can operate as a Modbus RTU/ASCII Master and/or Modbus RTU/ASCII Slave. Supports simultaneous connection of serial and Ethernet masters with serial Modbus devices.
Can be accessed by up to 32 Modbus TCP clients/masters or connect to up to 32 Modbus TCP slave/servers. Supports up to 31 or 62 Modbus RTU/ASCII slaves.
Auto-Device Routing: Simplifies configuration of large Modbus networks by automatically detecting Modbus requests and building slave ID routing tables with a single click.