Siemens SIMATIC S5 Manual page 12

System Overview
1.1 Block Diagram of the IP 267 Stepper Motor Controller
9 V
5 V
T
e
r
E-
24 V
m
E+
i
REF
n
STOP
a 5 V
IS N
l
b G
l
o
c
k
Figure 1-1. Block Diagram of the IP 267
1-2
Data bus
Signal level converter
9 V
5 V
Shift register
SRG
Sliding
switch
f
t
ASIC (pulse generation
and communication)
IP 267
9 V
Data
GND
-L
Us 5 V
NL
TN
TN N
RP
RP N
RDY
ACT
Status displays
ABT
EWA 4NEB 812 6061-02a