Null Modem Cable For Connecting A Cpu Via If To The Com Interface; Null Modem Cable For Connecting A Cpu Via If To The Com Interface Of A Programming Device With 25-Pin Sub. D Male Connector - Siemens S7-400 Installation Manual

Table 8-7
Signal
S1 / DTR
E2 / GND
M1 / DSR
S2 / RTS
M2 / CTS
M3 / RI
9-pin sub.
D female conn.
(COM1 for IF)
If the free COM interface of your programming device has a 25-pin subminiature
D connector, you can use Table 8-8 below for the pin assignments of the null
modem cable.
Table 8-8
Signal
E1 / GND
M5 / DCD
D2 / RxD
D1 / TxD
S1 / DTR
E2 / GND
M1 / DSR
S2 / RTS
M2 / CTS
M3 / RI
9-pin sub.
D female conn.
(COM1 for IF)
S7-400 and M7-400 Programmable Controllers Hardware and Installation
A5E00069481-04
Null Modem Cable for Connecting a CPU via IF to the COM Interface of a
Programming Device with 9-pin Sub. D Male Connector, continued
Pin
4 connected to
5 connected to
6 connected to
7 connected to
8 connected to
9
Pin U = housing (shield)
Length: 10 m max.
Null Modem Cable for Connecting a CPU via IF to the COM Interface of a
Programming Device with 25-pin Sub. D Male Connector
Pin
U
1
2
3
4
5
6
7
8
9
Pin U = housing (shield)
Length: 10 m max.
Connection
-
Connection
connected to
-
connected to
connected to
connected to
connected to
connected to
connected to
connected to
-
Assembling the M7-400
Pin Signal
6 M1 / DSR
5 E2 / GND
4 S1 / DTR
8 M2 / CTS
7 S2 / RTS
9 M3 / RI
9-pin sub.
D female conn.
(COMx for
programming
device)
Pin Signal
U E1 / GND
8 M5 / DCD
2 D2 / RxD
3 D1 / TxD
6 M1 / DSR
7 E2 / GND
20 S1 / DTR
5 M5 / CTS
4 S2 / RTS
22 M3 / RI
25-pin sub.
D male conn.
(COMx for
programming
device)
8-37