User manual
Publication CIG-WD001B-EN-P - May 2005
19-18 1794 FLEX I/O Modules
17 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 33
0 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5
16
35 3 6 3 7 3 8 3 9 4 0 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 5 0 5 1
34
Outputs
Commons
(1794-TB3 shown)
-V
V oltage
In +V
Voltage
Out +V
Voltage
Terminals 35 through 50 not available on 1794-TB2
A
B
C
Co mmon
-V
Common
16
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
51
33
34
+V
COM
+V
COM
B
C
Even Numbered I/O Terminals 0 thru 14
Odd Numbered I/O Terminals 1 thru 15
1794-TB2, -TB3, -TB3K, -TB3S
1794-TBN, -TBNK
Output
Te r m i na l
Co mmo n
Te r m i na l
1
Output
Te r m i na l
Co mmo n
Te r m i na l
2
0A-0A-1/B-17B-0C-1
1A-2A-3/B-18B-2C-3
2A-4A-5/B-19B-4C-5
3A-6A-7/B-20B-6C-7
4A-8A-9/B-21B-8C-9
5 A-10 A-11/B-22 B-10 C-11
6 A-12 A-13/B-23 B-12 C-13
7 A-14 A-15/B-24 B-14 C-15
+V dc
Common
Output
Channel
C-34 through C-51 for 1794-TB3, -TB3K and -TB3S
C-34 and C-51 for 1794-TB2, -TBN and -TBNK
B-16 through B-33 for 1794-TB2, -TB3, -TB3K, -TB3S
B-16 and B33 for 1794-TBN and -TBNK
1. For the 1794-TB2, -TB3, -TB3K, -TB3S terminal bases, the A-1, A-3, A-5, A-7, A-9, A-11,
A-13 and A-15 are connected internally to 24V dc common.
2. For the 1794-TBN and -TBNK terminal bases, the C-1, C-3, C-5, C-7, C-9, C-11,
C-13 and C-15 are connected internally to 24V dc common.
Connect +V to C-34.
Connect +V common to B-16.
Use B-33 and C-51 for daisy chaining to next terminal base unit.
1794-TB2, -TB3, -TB3K, -TB3S 1794-TBN, -TBNK
1794-OB8EP, 1794-OB8EPK
0 A-0 B-17 8 A-8 B-25
1 A-1 B-18 9 A-9 B-26
2 A-2 B-19 10 A-10 B-27
3 A-3 B-20 11 A-11 B-28
4 A-4 B-21 12 A-12 B-29
5 A-5 B-22 13 A-13 B-30
6 A-6 B-23 14 A-14 B-31
7 A-7 B-24 15 A-15 B-32
Common
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1716 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
51
50
0 123456789101112131415
0-15
16-33
34-51
A
B
C
1794-TB2, -TB3, -TB3K, -TB3S
Terminals 35 through 50 are not used on 1794-TB2
+V dc
Output
Channel
Output
Channel
Output
Terminal
Common
Terminal
Output
Terminal
Common
Terminal
B-16 through B-33
C-34 through C-51
(C-34 and C-51 for TB2)
Connect +V to C-34.
Connect +V common to B-16.
Use B-33 and C-51 for daisy chaining to next terminal base unit.
1794-TB2, -TB3, -TB3K, -TB3S
1794-OC16