CPU modules
4.2 CPU module CPU550/CPU551
SIMATIC TDC hardware
System Manual, 08/2017, A5E01114865-AL
95
4.2.7
Additional components
Table 4- 7
Additional components for CPU550/CPU551
Component
Designation
Article number
Program memory (4 MB)
MC 500
6DD1610-0AH4
Program memory (8 MB)
MC 510
6DD1610-0AH6
Program memory (2 MB)
MC 521
6DD1610-0AH3
PC connecting cable
(10-pole/9-pole)
SC67
6DD1684-0GH0
Cable for digital inputs
(10-pole/10-pole)
SC66
6DD1684-0GG0
Interface module
Electrical 1:1 wiring, no signal conversion
SB10
6DD1681-0AE2
Interface module with electrical isolation and signal con-
version
SB60
6DD1681-0AF4
Interface module with electrical isolation and signal con-
version
SB61
6DD1681-0EB3
Interface module
Electrical 1:1 wiring, no signal conversion
SU12
6DD1681-0AJ1
4.2.8
Pin assignments
Serial service interface (X1)
An control or configuration PC is connected to the 10-pin RJ-45 socket with polarity reversal
protection using the SC67 PC cable.
Table 4- 8
Pin assignment of X1 and cable SC67
X1
SC67
PIN
Designation
PIN CPU side
PIN PC side
1
DCD (Data Carrier Detect)
n.c.
n.c.
2
RxD (Receive Data)
2
3
3
TxD (Transmit Data)
3
2
4
DTR (Data Terminal Ready)
n.c.
n.c.
5
GND (Ground)
5
5
6
DSR (Data Set Ready)
n.c.
n.c.
7
RTS (Request to Send)
n.c.
n.c.
8
CTS (Clear to Send)
n.c.
n.c.
9
RI (Ring Indicator)
n.c.
n.c.
10
(n.c.)
n.c.
n.c.: n.c.
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