The I4X is a range of Communications interfaces designed for use with the AREVA range of ISTAT communicating Measurement Centres and Transducers. They can also be used with other serial devices such as Protection relays.
They can convert RS232 to RS485 and also they can allow products with RS232 and RS485 serial ports to communicate over Ethernet.

• Transmission rates from 1,200 to 115,200 bits per second
• Suitable for DIN rail mounting
• Universal ac/dc auxiliary power supply
• Low power consumption

The I4X allows a master station using an Ethernet or RS232 port to connect to a maximum of 32 devices. ISTAT products run MODBUS RTU protocol but other protocols can be used with the I4X interface.
The I4X used for Ethernet circuits has an RJ45 10/100 socket. On the EIA RS232 or RS485 side screw terminals are provided for the communications twisted pair wires.

RS485 devices are linked with a screened twisted pair of wires, an arrangement developed for use in electrically hostile environments, on a single spur with a maximum run of 1000m.