SINUMERIK 840D/DE NCU 571.4, 400 MHZ, 64 MB WITHOUT SYSTEM SOFTWARE MEMORY: NC 0.5 MB, PLC 96 KB PREPARED FOR PROFIBUS DP,
SINUMERIK 840D/DE CNC-HARDWARE NCU 572.5B 1,0 GHZ, 128 MB WITHOUT SYSTEM SOFTWARE MEMORY: NC 3 MB, PLC 128 KB PREPARED FOR PROFIBUS DP,