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Publication 1794-IN105A-EN-P - April 2004
Wiring Connections for the 1794-IC16 and 1794-OC16
1794-TB2, -TB3 and -TB3S Terminal Base Wiring for 1794-IC16
and -OC16
2 and 3-Wire Input Wiring for 1794-IC16
Configuring Your 48V dc Input Module, Cat. No. 1794-IC16
Image Table Memory Map for the 1794-IC16
Setting the Input Filter Time for the 1794-IC16
The 1794-IC16 has a built-in 1ms filter.You can increase the input filter time
(FT) for channels 00-15. To increase the filter time, set the corresponding bits
in the output image table (complementary word) for the module.(See table
below.)
For example, to set an additional filter time of 4ms for all 16 inputs of an -IC16
module at address rack 1, module agroup 0, set bits 00 thru05 as shown below.
The result will be a total filter time of 5ms.
Input Filter Time for the 1794-IC16
Actual filter time represents selected filter time plus 1ms.
Configuring Your 48V dc Output Module, Cat. No. 1794-OC16
Image Table Memory Map for the 1794-OC16
Specifications
1794-IC16 1794-OC16
Input
1794-TB3, -TB3S
Output
1794-TB2, -TB3,
-TB3S
Input 48V dc
Supply
Common
1
Output Common
Input 0 A-0 C-35 B-17 Output 0 A-0 B-17
Input 1 A-1 C-36 B-18 Output 1 A-1 B-18
Input 2 A-2 C-37 B-19 Output 2 A-2 B-19
Input 3 A-3 C-38 B-20 Output 3 A-3 B-20
Input 4 A-4 C-39 B-21 Output 4 A-4 B-21
Input 5 A-5 C-40 B-22 Output 5 A-5 B-22
Input 6 A-6 C-41 B-23 Output 6 A-6 B-23
Input 7 A-7 C-42 B-24 Output 7 A-7 B-24
Input 8 A-8 C-43 B-25 Output 8 A-8 B-25
Input 9 A-9 C-44 B-26 Output 9 A-9 B-26
Input 10 A-10 C-45 B-27 Output 10 A-10 B-27
Input 11 A-11 C-46 B-28 Output 11 A-11 B-28
Input 12 A-12 C-47 B-29 Output 12 A-12 B-29
Input 13 A-13 C-48 B-30 Output 13 A-13 B-30
Input 14 A-14 C-49 B-31 Output 14 A-14 B-31
Input 15 A-15 C-50 B-32 Output 15 A-15 B-32
A = Input/output terminals
B = Common terminals
C = Power terminals (C-34 thru C-51 on -TB3 and -TB3S; C-34 and C-51 on the -TB2)
1 3-wire devices use input, supply and common. 2-wire devices use input and supply
Dec. 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Oct. 17 16 15 14 13 12 11 10 7 6 5 4 3 2 1 0
Read I
15
I
14
I
13
I
12
I
11
I
10
I9 I8 I7 I6 I5 I4 I3 I2 I1 I0
Write Not used - set to 0 Input Filter FT1
12-15
Input Filter FT0
0-11
Where I = Input
FT0 = Input filter time for inputs 0-11
FT1 = Input filter time for inputs 12-15
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
34
Inputs/Outputs
Commons
(1794-TB3 shown
V COM
+V
Voltage
A
B
C
V COM
Connect +V dc power to terminal C-34
Connect V dc common to terminal B-16
Use B-33 and C-51 for daisychaining to the next terminal base unit
+V
(Terminals C-35 thru C-50 are not present on the 1794-TB2)
?
??
??
A
B
C
0-15
16-33
34-51
= Sink Input
= Common
= +V dc
2-Wire Device
(Sourcing Output)
3-Wire Device
(Sourcing Output)
A
B
C
Bits Description
02 01 00 Filter Time - inputs 00-11
Selected
Filter Time
Actual Filter
Time
05 04 03 Filter Time - inputs 12-15
0 0 0 Filter Time 0 (Default) 256µs 1256µs
0 0 1 Filter Time 1 512µs 1512µs
0 1 0 Filter Time 2 1ms 2ms
0 1 1 Filter Time 3 2ms 3ms
1 0 0 Filter Time 4 4ms 5ms
1 0 1 Filter Time 5 8ms 9ms
1 1 0 Filter Time 6 16ms 17ms
1 1 1 Filter Time 7 32ms 33ms
Dec. 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Oct. 17 16 15 14 13 12 11 10 7 6 5 4 3 2 1 0
Read Not used - set to 0
Write O
15
O
14
O
13
O
12
O
11
O
10
O
9
O
8
O
7
O
6
O
5
O
4
O
3
O
2
O
1
O
0
Where O = Output
Specifications - 48V dc 16 Input Module, Cat. No. 1794-IC16
Number of Inputs 16 (1 group of 16), nonisolated, sinking
Module Location Cat. No. 1794-TB3, and -TB3S
On-state Voltage 30V dc minimum
48V dc nominal
60V dc maximum
On-state Current
minimum
nominal
maximum
2.0mA @ 30V dc
5.0mA @ 48V dc
7.0mA @ 60V dc
Off-state Voltage 10V dc maximum
Off-state Current 1.5mA minimum
Nominal Input Impedance 10K ohms
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FT = 12-15 FT = 0-11
1794-IC16
O:010
Dec.
1
00
76543
FLL
I:000
00
Fill File
Source
Destination
Length
#O:010
1
Write FT to complement
of input module.
Write filter time on system startup.
21 0
= 44 Octal or 36 Decimal
010100
1794-IC16
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