External Ports; Com1/Com2 - Siemens SIMATIC IPC677D Operating Instructions Manual

Technical information
8.5 Hardware descriptions
Signal
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.
1
2
3
4
5
6
7
8
9
138
GND
GND
PCIEX16_TX_P(1)
PCIEX16_TX_N(1)
GND
GND
PCIEX16_TX_P(0)
PCIEX16_TX_N(0)
GND
n.c.
n.c.
Short description
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
Pin no. Pin no. Signal
B72 A72
B73 A73
B74 A74
B75 A75
B76 A76
B77 A77
B78 A78
B79 A79
B80 A80
B81 A81
B82 A82
Meaning
Data carrier detect
Received data
Transmit data
Data terminal ready
Ground
Ready for operation
Request to send
Clear to send
Incoming call
Operating Instructions, 09/2014, A5E32995420-AC
PCIEX16_RX_P(2)
PCIEX16_RX_N(2)
GND
GND
PCIEX16_RX_P(1)
PCIEX16_RX_N(1)
GND
GND
PCIEX16_RX_P(0)
PCIEX16_RX_N(0)
GND
Input / output
Input
Input
Output
Output
-
Input
Output
Input
Input
SIMATIC IPC677D