Digital I/O, 24 or 96 Lines, 5 V TTL/CMOS
24 or 96-Line Digital I/O
NI 650x
• 24 or 96 digital input/output lines
• 5 V TTL/CMOS
• 2-wire handshaking capability
• Known power-up states
• NI-DAQ driver simplifies
configuration and measurements
Operating Systems
• Windows 2000/NT/XP
• Real-time performance with
LabVIEW (see page 134)
• Others such as Linux and
Mac OS X (see page 187)
Models
• NI PCI-6503
• NI DAQCard-DIO-24
• NI PC-DIO-24
• NI PCI-DIO-96
• NI PXI-6508
• NI PC-DIO-96
Recommended Software
• LabVIEW
• LabWindows/CVI
• Measurement Studio
Other Compatible Software
• Visual Basic
• C/C++, C#
Driver Software (included)
• NI-DAQ 7
Family
NI 6503
NI 6508
Bus
PCI
PCMCIA
ISA
PCI
PXI
ISA
Digital I/O Lines
24
Device Type
Software timed
Logic Level
5 V TTL/CMOS
Isolation
–
Handshaking I/O
✓
1
8255 Chipset
✓
Change Notification
–
Pattern Matching
✓
Data Acquisition and
Signal Conditioning
96
–
Software timed
5 V TTL/CMOS
–
–
✓
1
✓
1
✓
✓
–
–
✓
✓
1
Handshaking
supplied by the 8255; only one handshaking mode is available.
Table 1. NI 650x Specifications Overview (See page 385 for detailed specifications.)
Overview and Applications
NI 6503 devices are 24-bit parallel DIO interfaces for PCI, PCMCIA,
and ISA. NI 6508 devices offer 96-bit parallel DIO interfaces for PCI,
PXI, and ISA. All NI 650x devices are designed for 5 V TTL/CMOS
I/O signals.
Digital I/O Connector
Digital connectors for the NI 650x devices are described in Table 2.
The eight bits in Port A of each PPI are at xPA7 through xPA0 on the
digital I/O connector where x represents which PPI is being used. Ports B
and C are at xPB7 through xPB0 and xPC7 through xPC0, respectively.
Each port is programmed to be input or output. Power from the
computer I/O channel is also available on the DIO connector. See page
381 to learn more about connectivity solutions, including direct
connectors, electromechanical relay devices, and other signal
conditioning solutions.
Device
PCI-6503
PC-DIO-24
DAQCard-DIO-24
NI 6508
Connector
50-pin, shown in Figure 3
27-pin; cable adapts it to the 50-pin connector shown in Figure 3
100 pin; shown in Figure 2
Hardware
82C55 Parallel Port Interfaces
NI 650x devices use 82C55 Parallel Port Interfaces (PPIs). NI 6503
devices contain one PPI, and the NI 6508 devices contain four. Each
PPI controls 24 bits of DIO and has three 8-bit ports (A, B, and C). You
can configure each port as either input or output. Ports A and B are
always used for digital data I/O, while port C can be configured for
digital data I/O, control, status, or handshake signals.
Table 2. NI 650x Connector Overview
Digital I/O Power-Up State Selection
You can power up the PCI-6503, PC-DIO-24, PC-DIO-96, and
PXI-6508 DIO lines in a user-defined state – either high or low. On
these devices, each line is connected to a 100 kΩ resistor, and you can
use a jumper to select whether the lines of the device power up in
the high or low state. The DAQCard-DIO-24 and PCI-DIO-96 have
100 kΩ resistors that always pull high.
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379
Digital I/O, 24 or 96 Lines, 5 V TTL/CMOS
24 or 96-Line Digital I/O
Driver Software
With NI-DAQ driver software, you can interactively configure your
devices, write custom programs, and easily perform digital I/O.
You can also use messaging so when an input port matches or
mismatches a user-defined pattern, NI-DAQ can perform another
Address Bus
Control Lines
Data Bus
I/O
Channel
Interface
Control Lines
Circuitry
IRQ
Data Bus
\
8
82C55
Digital
Interface
A
APC0 & APC3/
2
BPA
/
8
BPB
/
8
BPC
/
8
APA
/
8
APB
/
8
APC
/
8
programmed operation. This process eliminates polling, decreases the
load on the CPU and bus, and improves the efficiency of the system.
NI-DAQ also provides numerous example programs for LabVIEW and
other ADEs to quickly get you started with your application.
82C55
Digital
Interface
B
BPC0 & BPC3/
2
CPA
/
8
CPB
/
8
CPC
/
8
82C55
Digital
Interface
C
CPC0 & CPC3/
2
Data Acquisition and
Signal Conditioning
82C55
Digital
Interface
D
DPC0 & DPC3/
2
NI 6507/NI 6508 Devices Only
DPA
/
8
DPB
/
8
DPC
/
8
Figure 1. NI 650x Hardware Block Diagram
APC7
BPC7
APC6
BPC6
APC5
BPC5
APC4
BPC4
APC3
BPC3
APC2
BPC2
APC1
BPC1
APC0
BPC0
APB7
BPB7
APB6
BPB6
APB5
BPB5
APB4
BPB4
APB3
BPB3
APB2
BPB2
APB1
BPB1
APB0
BPB0
APA7
BPA7
APA6
BPA6
APA5
BPA5
APA4
BPA4
APA3
BPA3
APA2
BPA2
APA1
BPA1
APA0
BPA0
+5 V
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
CPC7
DPC7
CPC6
DPC6
CPC5
DPC5
CPC4
DPC4
CPC3
DPC3
CPC2
DPC2
CPC1
DPC1
CPC0
DPC0
CPB7
DPB7
CPB6
DPB6
CPB5
DPB5
CPB4
DPB4
CPB3
DPB3
CPB2
DPB2
CPB1
DPB1
CPB0
DPB0
CPA7
DPA7
CPA6
DPA6
CPA5
DPA5
CPA4
DPA4
CPA3
DPA3
CPA2
DPA2
CPA1
DPA1
CPA0
DPA0
+5 V
GND
PCI/PXI/CPCI/PCMCIA/ISA
I/O Connector
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
+5 VDC
1
3
5
7
2
4
6
8
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
9 10
11 12
13 14
15 16
17 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 50
Figure 2. NI 6508 I/O Connector
Figure 3. NI 6503 I/O Connector
Ordering Information
NI PCI-6503 .............................................................................777690-01
NI DAQCard-DIO-24..............................................................776912-01
NI PC-DIO-24 .........................................................................777368-01
NI PCI-DIO-96 ........................................................................777387-01
NI PXI-6508 .............................................................................777598-01
NI PC-DIO-96 .........................................................................777271-01
Includes NI-DAQ driver software
For information on extended warranty and value-added services, see page 20.
Recommended Configurations
Family
NI 6503
Device
PCI-6503
DAQCard-DIO-24
PC-DIO-24
PCI-DIO-96
PXI-6508
PC-DIO-96
Accessory
CB-50LP (777101-01)
CB-50LP (777101-01)
CB-50LP (777101-01)
SCB-100 (776990-01)
SCB-100 (776990-01)
CB-100kit (776455-02)
Cable
NB1 (180524-10)
PSH27-50F-D1 (776989-01)
NB1 (180524-10)
SH100-100-F (185095-02)
SH100-100-F (185095-02)
Included in kit
NI 6508
See page 382 for accessory and cable information.
BUY ONLINE!
Visit
ni.com/info
and enter pci6503, daqcarddio24, pcdio24, pcdio96,
pxi6508, or pcdio96.
380
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Digital I/O Connectivity and Signal Conditioning
Digital I/O Connectivity and Signal Conditioning
Cables, Connector Blocks,
and Signal Conditioning
Choose your Digital I/O cables, connector blocks, and signal
conditioning in two easy steps.
Step 1. Choose your connector block and cable. (see digital I/O
accessories section for details)
Device
PCI-6527, PXI-6527
Connector Block
CB-100 Kit
SCB-100
CA-1000, CB-50, CB-50LP
CA-1000, CB-50, CB-50LP
CA-1000, CB-50, CB-50LP
CB-100 Kit
SCB-100
CA-1000, CB-50, CB-50LP
CB-100 Kit
SCB-100
CA-1000, CB-50, CB-50LP
Cables
Kit includes R1005050 cable
SH100-100-F
R1005050 (splits into two 50-pin connectors); with this cable,
you can use two accessories from this group with one NI 6527 device
SH50-50 or NB1
PSH27-50F-D
Kit includes R1005050 cable
SH100-100-F
NB5 (Splits into two 50-pin connectors); with this cable,
you can use two accessories from this group with each device.
Kit includes NB5 cable
SH100-100-F
NB5 (Splits into two 50-pin connectors); with this cable,
you can use two accessories from this group with each device.
PCI-6503, PC-DIO-24
DAQCard-DIO-24
PCI-DIO-96, PXI-6508
PC-DIO-96
Step 2 (Optional). Choose your signal conditioning hardware
and enclosures.
Device
PCI-6527
PXI-6527
PCI-DIO-96
PXI-6508
PC-DIO-96
PCI-6503
PC-DIO-24
DAQCard-DIO-24
SCXI Signal Conditioning
System (Page 270 )
–
–
✓
✓
✓
✓
✓
✓
SSR Series
Modules (Page 349 )
–
–
✓
✓
✓
✓
✓
✓
SC-206x Device
(Page 349)
–
–
✓
✓
✓
✓
✓
✓
ER-8, ER-16
Electromechanical Relays (Page 349 )
–
–
✓
✓
✓
✓
✓
✓
CA-1000 Custom
Connectivity Enclosure (Page 351)
✓
✓
✓
✓
✓
✓
✓
✓
Data Acquisition and
Signal Conditioning
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381
Digital I/O Accessories and Cables
Digital I/O Accessories and Cables
Accessories for Digital I/O
SCXI – High-Performance Modular Signal Conditioning
(See Figure 1)
SCXI is a modular high-performance signal conditioning system that serves as a front
end to your DIO device. The SCXI modules for DIO offer isolation, extended voltage
ranges (up to 250 Vrms), increased current switching capabilities, and expanded
channel counts (up to 3,072 I/O lines). In addition to SCXI modules for DIO, your
SCXI signal conditioning system can include modules for analog output and general-
purpose switching when cabled to a DIO device. With SCXI, you can create
integrated, flexible high-channel-count measurement systems with signal
conditioning components tailored to your needs. See page 270 for details on SCXI
signal conditioning.
Figure 1. SCXI High-Performance Signal Conditioning
SCC – Portable Modular Signal Conditioning
National Instruments offers SCC modules for portable low-channel-count digital
signal conditioning. These modules mount in a compact, versatile carrier. See page
251 for details on SCC signal conditioning.
Digital Signal Conditioning Assessories
(See Figure 2)
Figure 2. Digital Signal Conditioning Accessories
Data Acquisition and
Signal Conditioning
National Instruments also offers several options for low-channel-count digital signal
conditioning. These accessories provide a cost-effective solution for digital I/O
systems requiring isolated I/O or relays for controlling external devices. Most of these
products cable directly to your National Instruments digital I/O device. See page 349
for details on digital signal conditioning accessories.
CA-1000
(See Figure 3)
Configurable signal connectivity solution for connecting DIO devices to different
types of standard I/O connectors and for incorporating switches and LED indicators.
You can place this connector box under a laptop PC, on a benchtop, or in a 19 in. rack.
CA-1000 ........................................................................................................See page 351
Dimensions – 30.7 by 25.4 by 4.3 cm (12.1 by 10 by 1.7 in.)
Figure 3. CA-1000 Configurable Signal Connectivity Solution
SCB-100
(See Figure 4)
Shielded I/O connector block for easy connection of I/O signals to 100-pin digital
I/O devices. The screw terminals are housed in a metal enclosure for protection
from noise corruption. Combined with shielded cables, the SCB-100 provides
rugged, very low noise signal termination. It also includes general breadboard
areas – three on the SCB-100.
SCB-100............................................................................................................776990-01
Dimensions – 19.5 by 15.2 by 4.5 cm (7.7 by 6.0 by 1.8 in)
Figure 4. SCB-100 Shielded Connector Blocks
CB-50 I/O Connector Block with DIN-Rail Mounting
(See Figure 5)
Termination accessory with 50 screw terminals for easy connection of field I/O
signals to NI 650x and NI 6527 devices. Includes one 50-pin header for direct
connection to 50-pin cables. The CB-50 includes a protective plastic base and
hardware for mounting the accessory on either a standard DIN rail or flush on a wall
or panel.
CB-50................................................................................................................776164-90
Dimensions – 13.5 by 7.3 cm (5.3 by 2.9 in.)
Figure 5. CB-50 I/O Connector Block
382
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Digital I/O Accessories and Cables
Digital I/O Accessories and Cables
CB-50LP I/O Connector Block
(See Figure 6)
Termination board with 50 screw terminals for easy connection of field I/O signals to
NI 650x and NI 6527 devices. Includes one 50-pin header for direct connection to
50-pin cables. The CB-50LP includes metal standoffs for use on a desktop or for
mounting on a custom panel.
CB-50LP............................................................................................................777101-01
Dimensions – 13.26 by 7.19 cm (5.22 by 2.83 in.)
CB-100 I/O Connector Kit
(See Figure 7)
The first CB-100 kit includes two CB-50 I/O connector blocks and an R1005050
ribbon cable for connecting to a PCI-6527, PXI-6527, PCI-DIO-96, PXI-6508
device. The second CB-100 kit includes two CB-50 I/O connector blocks and/or an NB5
ribbon cable for direct connection to a PC-DIO-96 device. Each CB-50 block includes
hardware for mounting the accessory on a standard DIN-rail or panel.
CB-100 with 1 m R1005050 cable ..................................................................777812-01
CB-100 with 1 m NB5 cable............................................................................776455-02
Figure 6. CB-50LP I/O Connector Block
RTSI Bus Cables
Use RTSI bus cables to connect timing and synchronization signals among
measurement, vision, motion, and CAN boards for PCI and ISA. For systems using
both long and short boards, order the extended RTSI cable.
2 boards ............................................................................................................776249-02
3 boards ............................................................................................................776249-03
4 boards ............................................................................................................776249-04
5 boards ............................................................................................................776249-05
Extended, 5 boards ..........................................................................................777562-05
Figure 7. B-100 I/O Connector Kit
Data Acquisition and
Signal Conditioning
SH50-50
(See Figure 8)
Shielded 50-conductor cable that connects to a PCI-6503 or PC-DIO-24 device and
terminates with a 50-pin connector. The kit includes the shielded cable and a 3 in.
ribbon cable for connection flexibility.
1 m ....................................................................................................................777720-01
2 m ....................................................................................................................777720-02
Figure 8. H50-50 Shielded Cable
SH100-100-F
(See Figure 9)
Shielded 100-conductor cable that connects to a PCI-6527, PXI-6527, PCI-DIO-96,
PXI-6508, or DAQPad-6508 and terminates with a 100-pin 0.050 series D-type
connector that attaches directly to 100-pin accessories.
2 m ....................................................................................................................185095-02
Figure 9. SH100-100-F Shielded Cable
PSH27-50F-D1 for DAQCard-DIO-24
Shielded cable that connects to the DAQCard-DIO-24 and is terminated with a 50-pin
female connector that attaches directly to 50-pin accessories.
0.5 m ..............................................................................................................776989-0R5
1 m ....................................................................................................................776989-01
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383
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