Mode Of Operation; Block Diagram - Siemens S5-135U/155U System Manual

10.1.2

Mode of Operation

10.1.3

Block Diagram

Address
comparison
S1
Daten
ausgeben
Data bus
MEMR
MEMW
RDY
CPKL
BASP
X4/4 RESET input
L+ (24V)
X4/5
X4/6 L–
Figure 10-2 Block Diagram
System Manual
C79000-G8576-C199-06
Address bus
Presel-
Address
ection
comparison
S2
of time
Read and
Bit
compare
inversion
data
Control signal
monitoring
R/W
Edge
internal +5V
internal 0V
Monitoring Module
Address
Address
Address comparison
comparison
comparison
S3
Time Time
moni-
moni-
toring
toring
1
DB
ADB
1
1
RUN
S4
Time
moni-
toring
S
R
X4/3
X4/2
X4/1
Relay contact
10-3