Absolute encoder interfaces are more than incremental encoders. For incremental encoders, TTL , line driver, pushpull and open collector interfaces are common. But for absolute encoders, its interface options are more. Generally, two types of interfaces: Parallel and serial interface. Parallet interface is similar to incremental encoder interfaces. But serial interface is more common for absolute encoders, like SSI, BISS, RS485, RS232. Roundss absolute encoders are available with multiple serial interface.Welcome your inquiry at any time.