2
03.96
2.1 Mechanical configuration
2-22
 Siemens AG 2000 All Rights Reserved
SINUMERIK 840D Installation and Start-Up Guide (IAD) – 04.00 Edition
2.1.3 NCU
Operator panel interface
Reserved
P–BUS/K–BUS interface
(PLC I/O devices)
PG–MPI interface
I/O device interface
(cable distribution cabinet)
Various error and status LEDs
(H1/H2)
7-segment display (H3)
RESET button (S1)
NMI button (S2)
PLC start-up switch
Digitizing module connection
NCK start-up switch
SIMODRIVE 611D interface
PCMCIA slot
(X173)
Device bus interface
MEMORY–CARD
S3
X130B
X130A
X121 X111
S4
X102/
103
X101
X112
X122
RESETNMI
X172
+5 V
NF
CF
CB
CP
PR
PS
PF
PF0
–
L2DP
Fig. 2-2 Interfaces, control and display elements of NCU module
2 Confi
uration