Siemens SIMATIC CP 440, Руководство пользователя

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Connecting Cables
B-2
Point-to-point connection CP 440 Installation and Parameter Assignment
A5E00057742-02
B.1 X27 (RS 422/485) Interface of the CP 440
Pin Assignment
The table below shows the pin assignment for the 15-pin subminiature D female
connector in the front panel of the CP 440.
Table B-1 Pin Assignment for the 15-Pin Subminiature D Female Connector of the Integrated Interface
of the CP 440
Female Connector
on the
CP440-RS422/485*
Pin Designatio
n
Input/Output Meaning
1 – – –
2 T (A)– Output Transmitted data (four-wire operation)
3 – – –
15
14
8
7
6
4 R (A)/
T (A) – Input
Input/Output
Received data (four-wire operation)
Received/transmitted data (two-wire
operation)
14
13
12
6
5
5 – – –
3
12
11
5
4
6 – – –
3
2
10
11
10
9
7 – – –
1
9
8 GND – Functional ground (floating)
9 T (B) + Output Transmitted data (four-wire operation)
10 – – –
11 R (B)/
T (B) + Input
Input/Output
Received data (four-wire operation)
Received/transmitted data (two-wire
operation)
12 – – –
13 – – –
14 – – –
15 – – –
* Front view