
Appendix D: Cable Connection Diagrams
Siemens Energy & Automation, Inc. 73
Siemens S7
Simatic TI5 RS-232 Port
1
1
6
6
2
2
7
7
3
3
8
8
4
4
9
9
5
5
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
DTU 3005B
Siemens S7 PLC
or Motor Drive
Siemens S7 PLC
or Motor Drive
(Optional, Daisy Chained)
4RTS
5 CTS
7 Ground
21 TX-
22 RX-
23 TX+
24 RX+
3D+
5 Ground
8D-
3D+
5 Ground
8D-
DB-25 Male
DB-9 Male
DB-9 Male
Cable Type: 3 or 4 Conductor Round
2-Wire RS422 or RS485 Communications: Yes
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
DTU 3005B
Simatic TI5
RS-232 Port
2 TXD
3 RXD
7 Ground
1 DCD
2 RXD
3 TXD
5 Ground
6 DSR
7 CTS
8RTS
DB-25 Male
DB-9 Female
5
9
4
8
3
7
2
6
1
Cable Type: 4 Conductor Round
2-Wire RS422 or RS485 Communications: No
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