Confusion with serial communication standards when sending sync serial data to a PC thorugh its serial port
No, a simple electrical interface converter won't work here, as the protocols sent over the interfaces are incompatible.

RS-422 and RS-232 are specifications for electrical interfaces, they do not define what signals are sent over it.

PC sends asynchronous start-stop data using an UART. These signals are just sent at RS-232 levels.

SSI uses clock and data. These signals are just sent at RS-422 levels.