Pin Assignments Of The Cable For Connecting A Cpu Via If To The Com Interface Of A Programming Device With 9-Pin Sub. D Male Connector - Siemens S7-400 Installation Manual

Assembling the M7-400
Connecting without Control Cables
If the data traffic via the COM interface is to be controlled exclusively via the data
lines, a connecting cable as described below is sufficient for connecting your CPU
to a programming device.
If the free COM interface of your programming device has a 9-pin subminiature
D male connector, you can use Table 8-9 below for the pin assignments of the
connecting cable.
Table 8-9 Pin Assignments of the Cable for Connecting a CPU via IF to the COM
Interface of a Programming Device with 9-pin Sub. D Male Connector
Signal
E1 / GND
D2 / RxD
D1 / TxD
E2 / GND
9-pin sub.
D female conn.
(COM1 for IF)
If the free COM interface of your programming device has a 25-pin subminiature
D female connector, you can use Table 8-10 below for the pin assignments of the
connecting cable.
Table 8-10 Pin Assignments of the Cable for Connecting a CPU via IF to the COM
Interface of a Programming Device with 25-pin Sub. D Female Connector
Signal
E1 / GND
D2 / RxD
D1 / TxD
E2 / GND
9-pin sub.
D female conn.
(COM1 for IF)
8-38
Pin Connection
U
2
3
5
Pin U = housing (shield)
Length: 10 m max.
Pin Connection
U
2
3
5
Pin U = housing (shield)
Length: 10 m max.
S7-400 and M7-400 Programmable Controllers Hardware and Installation
Pin Signal
U E1 / GND
2 D2 / RxD
3 D1 / TxD
5 E2 / GND
9-pin sub.
D female conn.
(COMx for
programming
device)
Pin Signal
U E1 / GND
2 D1 / TxD
3 D2 / RxD
7 E2 / GND
25-pin sub.
D male conn.
(COMx for PG)
A5E00069481-04