Appendix D: Cable Connection Diagrams
72 Siemens Energy & Automation, Inc.
Omron C28H
Omron CQM1
1
6
2
7
3
8
4
9
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
Omron
C28H
2 TXD
3 RXD
7 Ground
2 RXD
3 TXD
7 Ground
DB-25 Male
DB-9 Male
Cable Type: 4 Conductor Round
2-Wire RS422 or RS485 Communications: No
1
6
2
7
3
8
4
9
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
Omron
CQM1
2 TXD
3 RXD
7 Ground
2 RXD
3 TXD
9 Ground
DB-25 Male
DB-9 Male
Cable Type: 4 Conductor Round
2-Wire RS422 or RS485 Communications: No
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