CPU modules
4.2 CPU module CPU550/CPU551
SIMATIC TDC hardware
100 System Manual, 08/2017, A5E01114865-AL
4 of the 8 digital inputs support interrupts
Input voltage
• Rated voltage
• For 0 signal
• For 1 signal
24 V
-1 V to +6 V
+13.5 V to +33 V
Input current
• For 0 signal, normally
• For 1 signal, normally
0 mA
3 mA
Delay time per channel, max.
(Minimum cycle during which interrupt tasks can
100 µs
Serial service interface (X1)
• Functions for the user program
– Testing and commissioning
– Loading the program
• Transmission rate
RS232 interface (V.24)
with CFC or “Basic commissioning”
from the PC
19.2 Kbps
Max. number of configured send/receive chan-
nels (independent of the protocol used)
1000
Typical current consumption
6DD1600-0BA1
6DD1600-0BA3