Model SN1 gateways provide users of Allen-Bradley PLCs an easy way to upgrade obsolete drives, robots, operator interfaces and other remote I/O (RIO) or Data Highway Plus (DH+) devices without requiring replacement or changes to the PLC-5 or SLC-500 controller. The gateway connects directly to existing A-B RIO or DH+ networks. New devices can be on Ethernet (e.g., EtherNet/IP or ModbusTCP) or serial networks (e.g., Modbus or DF1), and new devices can be from any vendor. Alternatively, the gateway can be used to interface a new PLC to an existing Allen-Bradley I/O, PLC or other compatible device. It also can replace an Allen-Bradley PLC.
