HEIDENHAIN iTNC 530 HSCI - Page 73

July 2013 2.4 General information 73
The MC is connected to the CC controller unit, the MB machine operating
panel and the PL 6xxx PLC input/output systems via HSCI (HEIDENHAIN
Serial Controller Interface). The connection of the various control components
via HSCI offers numerous benefits, including:
 Simple and uncomplicated wiring
 High noise immunity
 Simple commissioning
 Comprehensive yet straightforward possibilities for diagnostics
The iTNC 530 is prepared for the connection of incremental and absolute
position and shaft-speed encoders. EnDat 2.2, which is purely digital and
compatible to version 2.1, makes it possible to very rapidly transmit highly
resolved position values over long cable lengths. An overview of EnDat 2.2:
DATA
DATA
CLOCK
CLOCK
5
5 V
U
N
U
P
*)
U
N *)