Siemens SIMATIC IPC677D - 8.5.3 External ports; 8.5.3.1 COM1;COM2

Technical information
8.5 Hardware descriptions
SIMATIC IPC677D
138 Operating Instructions, 09/2014, A5E32995420-AC
Signal
Pin no.
Pin no.
Signal
GND
B72
A72
PCIEX16_RX_P(2)
GND
B73
A73
PCIEX16_RX_N(2)
PCIEX16_TX_P(1)
B74
A74
GND
PCIEX16_TX_N(1) B75 A75 GND
GND
B76
A76
PCIEX16_RX_P(1)
GND
B77
A77
PCIEX16_RX_N(1)
PCIEX16_TX_P(0)
B78
A78
GND
PCIEX16_TX_N(0)
B79
A79
GND
GND
B80
A80
PCIEX16_RX_P(0)
n.c.
B81
A81
PCIEX16_RX_N(0)
n.c.
B82
A82
GND
Note
This slot can also be used for PCIe x8, x4 and x1 modules.
8.5.3
External ports
8.5.3.1
COM1/COM2
Serial port COM1, 9-pin (plug) or COM2
Pin no.
Short description
Meaning
Input / output
1
DCD
Data carrier detect
Input
2 RxD Received data Input
3
TxD
Transmit data
Output
4 DTR Data terminal ready Output
5
GND
Ground
-
6
DSR
Ready for operation
Input
7
RTS
Request to send
Output
8
CTS
Clear to send
Input
9
RI
Incoming call
Input