Input (read) image output/configuration image – Rockwell Automation 1794-IP4/B INSTL INSTR 24V dc FLEX I/O 4 CHANNEL User Manual
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Publication 1794-IN064D-EN-P - March 2005
Wiring Connections for the 1794-IP4
Example of 16-bit Period Time Measurement and 16-bit
Accumulating Pulse Counter Wiring (4 channels)
Example of 32-bit Period Time Measurement Wiring
(4 channels)
Input (read) Image
Output/Configuration Image
Channel
Signal
Name
1
1794-TB2, -TB3, -TB3S
1794-TBN
2
Signal
0V dc
COM
12...24V
dc
Signal
16-bit Period Time Measurement
0
N
A-0
B-17
C-35
B-0
N
A-1
B-18
C-36
B-1
1
N
A-2
B-19
C-37
B-2
N
A-3
B-20
C-38
B-3
2
N
A-4
B-21
C-39
B-4
N
A-5
B-22
C-40
B-5
3
N
A-6
B-23
C-41
B-6
N
A-7
B-24
C-42
B-7
32-bit Period Time Measurement
0
D
A-8
B-25
C-43
B-8
D
A-9
B-26
C-44
B-9
1
D
A-10
B-27
C-45
B-10
D
A-11
B-28
C-46
B-11
2
D
A-12
B-29
C-47
B-12
D
A-13
B-30
C-48
B-13
3
D
A-14
B-31
C-49
B-14
D
A-15
B-32
C-50
B-15
0V dc
Terminals 16 thru 33 (1794--TB2, -TB3,
-TB3S)
Terminals
16 and 33
12/24V dc
Terminals 34 and 51 (1794-TB2)
Terminals 34 thru 51 (1794-TB3, -TB3S)
Terminals
34 and 51
1
Any unused signals have to be connected to the associated common.
2
Auxiliary terminal blocks are required when using these terminal base units.
N
N
17
18
19
20
21
22
23
24
25
33
0
1
2
3
4
5
6
7
8
16
35
36
37
38
39
40
41
42
15
51
34
0V dc
12/24V dc
External
Power Supply
12/24V dc
Signal Inputs
Channel 0
Channel 3
Channel 2
Channel 1
0
A
B
C
1
N
N
N
N
N
N
Accumulating Pulse Counter
6
7
3
4
5
2
NOTE: To reduce noise, attach N to 0V dc
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
0
Reserved
1
Counter 00 - 16-bit period measurement for channel 0
2
Counter 01 - pulse counter for channel 0 - 16-bit pulse counting
1
32-bit period measurement for channel 0
2
32-bit period measurement for channel 0
3
Counter 10 - 16-bit period measurement for channel 1
4
Counter 11 - pulse counter for channel 1 - 16-bit pulse counting
3
32-bit period measurement for channel 1
4
32-bit period measurement for channel 1
5
Counter 20 - 16-bit period measurement for channel 2
6
Counter 21 - pulse counter for channel 2 - 16-bit pulse counting
5
32-bit period measurement for channel 2
6
32-bit period measurement for channel 2
7
Counter 30 - 16-bit period measurement for channel 3
8
Counter 31 - pulse counter for channel 3 - 16-bit pulse counting
7
32-bit period measurement for channel 3
8
32-bit period measurement for channel 3
9
Readback of Control Word 2
Reserved
R
D
3
R
D
2
R
D
1
R
D
0
M
3
M
2
M
1
M
0
10
Revidion Read - software version code
Where
M = Measurement Ready bit - positive edge measurement ready for the respective channel
RD = Reset done
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
0
Control Word 0 - selects the measure function
1
Control Word 1 - sets the clock frequency and period multiple
2
Control Word 2 - sets the start of a new measurement
3
Not used
16
0
34
0V dc
12/24V dc
External
Power Supply
12/24V dc
32-bit period time measurement
Signal Inputs
A
B
C
24
25
26
27
28
29
30
31
32
8
9
10
11
12
13
14
15
42
43
44
45
46
47
48
49
50
33
51
10
11 12 13
D
D
Channel 0
Channel 3
Channel 2
Channel 1
D
D
D
D
D
D
8
9
14 15
NOTE: To reduce noise, attach N to 0V dc