Communications Interfaces Point-to-point connections Encoder Controller Encoder Inclinometer Communications interface standards. each bit. Response is virtually instantaneous. The connection is point-to-point, typically through a ribbon-type cable. As this type of cable is relatively bulky and inflexible, bit parallel systems work best over short distances. Digital Point-to-Point Wiring With point-to-point wiring, a dedicated cable runs from the controller to each individual sensor. SSI (Serial Synchronous Interface) and BiSS (Bi - directional Serial Syn chronous) interfaces for absolute en coders use pointto-point wiring systems. These are digital interfaces that can connect directly to PLCs or other controllers. SSI connections offer good speed (clock rates up to 2 Mhz), high resolution, flexible cabling, and reliable communication up to a few hundred meters (although baud rates are reduced for longer distances). SSI protocols provide basic error detection (broken wire, short circuit,http://www.techbriefs.com http://www.abpi.net/ntbpdfclicks/l.php?202108MDNAV