I-7520: RS-232 to RS-485 Converter with auto tuning function. Supports a maximum of 256 modules. in a single RS-485 network without using a repeater. Supports up to 2048 modules when using repeaters.
PROFIBUS to RS-232/422/485 Converter is specially designed for the slave device of PROFIBUS DP protocol. It offers RS-232, RS-422, and RS-485: three ways of communication.