Connectors – National Instruments Compatibility mode (J1 pins 27 and 28 Logic High)

Whenever J1 pins 27 and 28 are set to Logic High (5V Sense) J1 and J2 connectors signal assignments change. In this mode J1 connector will have an additional eight TTL I/O channels for a total of 40 channels. The additional eight channels are channels 32-39 of J2 TTL I/O connector. Those channels should not be used on J2.

J1 – TTL I/O Connector

The following are connector pin assignments for J1 TTL I/O Connector with high level in inputs pins 27 and 28:

 #
Signal
#
Signal
 #
Signal
#
Signal
1
GND
18
GND
35
TIO0
52
TIO17
2
GND
19
GND
36
TIO1
53
TIO18
3
GND
20
GND
37
TIO2
54
TIO19
4
GND
21
GND
38
TIO3
55
TIO20
5
GND
22
GND
39
TIO4
56
TIO21
6
GND
23
GND
40
TIO5
57
TIO22
7
GND
24
GND
41
TIO6
58
TIO23
8
GND
25
GND
42
TIO7
59
TIO24
9
GND
26
GND
43
TIO8
60
TIO25
10
GND
27
5V Sense
44
TIO9
61
TIO26
11
GND
28
5V Sense
45
TIO10
62
TIO27
12
GND
29
TIO28
46
TIO11
63
TIO29
13
GND
30
TIO30
47
TIO12
64
TIO31
14
GND
31
TIO32
48
TIO13
65
TIO33
15
GND
32
TIO34
49
TIO14
66
TIO35
16
GND
33
TIO36
50
TIO15
67
TIO37
17
GND
34
TIO38
51
TIO16
68
TIO39

J1 - TTL I/O Connector with pins 27 and 28 high

GND

Ground

TIO0 to TIO39

Input Output TTL Data Lines

5V Sense

Input Sense detecting if 5V (Logic High) is connected

 

J2 – TTL I/O Connector

The following are connector pin assignments for J2 TTL I/O Connector with high level in J1 inputs pins 27 and 28:

#
Signal
#
Signal
 #
Signal
 #
Signal
1
GND
18
GND
35
R
52
TIO49
2
GND
19
GND
36
R
53
TIO50
3
GND
20
GND
37
R
54
TIO51
4
GND
21
GND
38
R
55
TIO52
5
GND
22
GND
39
R
56
TIO53
6
GND
23
GND
40
R
57
TIO54
7
GND
24
GND
41
R
58
TIO55
8
GND
25
GND
42
R
59
TIO56
9
GND
26
GND
43
TIO40
60
TIO57
10
GND
27
R
44
TIO41
61
TIO58
11
GND
28
R
45
TIO42
62
TIO59
12
GND
29
R
46
TIO43
63
TIO60
13
GND
30
R
47
TIO44
64
TIO61
14
GND
31
R
48
TIO45
65
TIO62
15
GND
32
R
49
TIO46
66
TIO63
16
GND
33
R
50
TIO47
67
R
17
GND
34
R
51
TIO48
68
R

J2 - TTL I/O Connector with J1 pins 27 and 28 high

GND

Ground

TIO40 to TIO63

Input Output TTL Data Lines

R

Reserved

 

J3 – Differential I/O Connector Channels 0-31

The following are connector pin assignments for J3 Differential I/O Channels 0-31 Connector with high level in J1 inputs pins 27 and 28:

 #
Signal
 #
Signal
 #
Signal
#
Signal
1
DIO0+
18
DIO17+
35
DIO0-
52
DIO17-
2
DIO1+
19
DIO18+
36
DIO1-
53
DIO18-
3
DIO2+
20
DIO19+
37
DIO2-
54
DIO19-
4
DIO3+
21
DIO20+
38
DIO3-
55
DIO20-
5
DIO4+
22
DIO21+
39
DIO4-
56
DIO21-
6
DIO5+
23
DIO22+
40
DIO5-
57
DIO22-
7
DIO6+
24
DIO23+
41
DIO6-
58
DIO23-
8
DIO7+
25
DIO24+
42
DIO7-
59
DIO24-
9
DIO8+
26
DIO25+
43
DIO8-
60
DIO25-
10
DIO9+
27
DIO26+
44
DIO9-
61
DIO26-
11
DIO10+
28
DIO27+
45
DIO10-
62
DIO27-
12
DIO11+
29
DIO28+
46
DIO11-
63
DIO28-
13
DIO12+
30
DIO29+
47
DIO12-
64
DIO29-
14
DIO13+
31
DIO30+
48
DIO13-
65
DIO30-
15
DIO14+
32
DIO31+
49
DIO14-
66
DIO31-
16
DIO15+
33
5V
50
DIO15-
67
5V
17
DIO16+
34
GND
51
DIO16-
68
GND

J3 - Differential I/O Connector Channels 0-31

DIO0+ to DIO31+

Input/Output Differential Data Lines High

DIO0- to DIO31-

Input/Output Differential Data Lines Low

5V

5 Volt Power

GND

Ground

 

J4 – Differential I/O Connector Channels 32-63

The following are connector pin assignments for J4 Differential I/O Channels 32-63 Connector with high level in J1 inputs pins 27 and 28:

 #
Signal
 #
Signal
 #
Signal
 #
Signal
1
DIO32+
18
DIO49+
35
DIO32-
52
DIO49-
2
DIO33+
19
DIO50+
36
DIO33-
53
DIO50-
3
DIO34+
20
DIO51+
37
DIO34-
54
DIO51-
4
DIO35+
21
DIO52+
38
DIO35-
55
DIO52-
5
DIO36+
22
DIO53+
39
DIO36-
56
DIO53-
6
DIO37+
23
DIO54+
40
DIO37-
57
DIO54-
7
DIO38+
24
DIO55+
41
DIO38-
58
DIO55-
8
DIO39+
25
DIO56+
42
DIO39-
59
DIO56-
9
DIO40+
26
DIO57+
43
DIO40-
60
DIO57-
10
DIO41+
27
DIO58+
44
DIO41-
61
DIO58-
11
DIO42+
28
DIO59+
45
DIO42-
62
DIO59-
12
DIO43+
29
DIO60+
46
DIO43-
63
DIO60-
13
DIO44+
30
DIO61+
47
DIO44-
64
DIO61-
14
DIO45+
31
DIO62+
48
DIO45-
65
DIO62-
15
DIO46+
32
DIO63+
49
DIO46-
66
DIO63-
16
DIO47+
33
5V
50
DIO47-
67
5V
17
DIO48+
34
GND
51
DIO48-
68
GND

J4 - Differential I/O Connector Channels 32-63

DIO32+ to DIO63+

Input/Output Differential Data Lines High

DIO32- to DIO63-

Input/Output Differential Data Lines Low

5V

5 Volt Power

GND

Ground