My daq card PCI6025e' digital ports PA,PB,PC are in high state and cannot be changed even in MAX 2.1 testing panel and continuously output 5 volts even set for output.

my digital ports PA,PB,PC are in high state and cannot be set low even if it is set for outputs.
Thanks

The MAX utility is the closest to the driver level and will eliminate software configuration as a possible issue. Please disconnect anything that you have connected to the DIO lines.
Use the MAX test panel for your DIO lines, configure them as outputs, and set them to a low state. Use a multimeter (DMM) to observe the line state. If it is still high then you may have a problem with your hardware. If this is the case, I advise calling National Instruments support and investigate a possible RMA (repair).
Best Regards,
Justin Britten
Applications Engineer
National Instruments

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INPUT PORTB.0                          ; Light Sensor
OUTPUT PORTB.3                     ; Left Motor Forward
OUTPUT PORTB.4                     ; Left Motor Backward
OUTPUT PORTB.5                     ; Right Motor Forward
OUTPUT PORTB.6                     ; Right Motor Backward
; to make code easy to read we are defining symbols for our ports:
SYMBOL             LSENSOR                 PORTB.0
SYMBOL             LMOTORF                 PORTB.3
SYMBOL             LMOTORB                 PORTB.4
SYMBOL             RMOTORF                 PORTB.5
SYMBOL             RMOTORB                 PORTB.6
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TURN_RIGHT_FORWARD:
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HIGH   RMOTORF
LOW   LMOTORB
LOW   RMOTORB
GO_STRAIGHT_BACKWARD:
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HIGH   RMOTORB
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Hey there,
I noticed that you have posted here (http://forums.ni.com/ni/board/message?board.id=250&message.id=31497) and got some answers
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AdamB
Applications Engineering Team Leader | National Instruments | UK & Ireland

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Hi All:
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MAX 2.0.3.6.
Hardware is:
PCI-MIO-16E-1
SCXI-1000 Chassis
SCXI-1121 Module
SCXI-1320 Terminal Block
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Filter jumpers were set at 10kHz and I left them at that setting.
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ob0!sc1!md1!0
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I have set up a virtual channel for each channel and used the DAQ virtual test channel
test panel, and I get the same result .0184v.
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Thank You
Peter Waltz

Hello Peter,
If you are reading 0.0184V on your analog input, then it probably means that you are reading nothing at all.
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Most likely the driver upgrade would solve your problem.
You can download the drivers from here.
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Application Engineer
NI
Message Edited by CKap on 05-08-2006 02:57 PM

Keep alive TCP setting for port 3998 to avoid fw timeout?

Hello,
in our new DS6.1 env, replication between the master DS is using port 3998 through several firewalls. If there are no changes to the DB (we are still testing), the connection seems to time out on the firewall and the status of the remote masters in the SMC drops to "stopped" even though they are still running. If one clicks on the DS entry in the SMC, it seems to set up a fresh TCP connection and the status is ok again.
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Hi, I have an instrument which has a usb connection. When I connect it to a Windows 7 PC, it automatically picks up the driver and shows up as a "USB Serial Port (COM7) (Manufacturer is FTDI).
When I open up NI MAX, this device shows up as COM7 (ASRL7::INSTR) under "Serial and Parallel". And, when I click on Open VISA Test Panel, and try the "*IDN?" command, it works OK.
However, the VI (which just sends a VISA command "*IDN?") gives me a time out error (0XBFF0015) or a device/resource not present error ( 0XBFFF0011). Attached is a screenshot of the VI.
Any ideas why?
Thanks.
PS: I went through the process to create the VISA-USB driver, but that has some other issue, but I am trying to understand why this occurs. This device also has a GPIB port and when I use a USB-GPIB adapter, it works very well.
Solved!
Go to Solution.
Attachments:
problem_vi.JPG ‏24 KB

SysB1 wrote:
Hi, I have an instrument which has a usb connection. When I connect it to a Windows 7 PC, it automatically picks up the driver and shows up as a "USB Serial Port (COM7) (Manufacturer is FTDI).
When I open up NI MAX, this device shows up as COM7 (ASRL7::INSTR) under "Serial and Parallel". And, when I click on Open VISA Test Panel, and try the "*IDN?" command, it works OK.
However, the VI (which just sends a VISA command "*IDN?") gives me a time out error (0XBFF0015) or a device/resource not present error ( 0XBFFF0011). Attached is a screenshot of the VI.
Any ideas why?
Thanks.
PS: I went through the process to create the VISA-USB driver, but that has some other issue, but I am trying to understand why this occurs. This device also has a GPIB port and when I use a USB-GPIB adapter, it works very well.
Look up the examples that ship with LabVIEW. What you have there isn't quite complete - for serial VISA. While GPIB will work great with what you have, serial VISA requires you to configure your serial port and is a little more complicated to read.
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(Mid-Level minion.)
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How to avoid dependance between output digital port with a PCI 1200 daq card?

Hello,
I don't manage to fix the state of a line on one port (PA0 for ex) without change the state of another line of another digital port (PB0 for ex)
I use a PCI 1200 Daq card with Labview 5.0.1 (under Windows 98)
How to configure a robust state (high logic level) on a line of a port??
Does anybody have an idea on this problem?
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JF LAVEZARD

jflab a écrit:
Hello,
I don't manage to fix the state of a line on one port (PA0 for ex) without change the state of another line of another digital port (PB0 for ex)
I use a PCI 1200 Daq card with Labview 5.0.1 (under Windows 98)
How to configure a robust state (high logic level) on a line of a port??
Does anybody have an idea on this problem?
Thanks a lot in advance and happy new year to the community
JF LAVEZARD
Hello,
I've found the problem
The PCI1200 has a chip 8255 for Digital I/O
If I use the bad VI, it reconfigures the port and all the lines go in a low logic state
so I'd to write only on the port or the line without reconfigure the port
So the good VI in the palett is: Port Write and not Digital Port write!
See attached file..
Thanks
Best Regards
Attachments:
port_dio.jpg ‏771 KB

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Hi, dear all,
I am looking for a method to send 10-bit word data to AD8403 Digital Potentiometer from PC’s Serial/Parallel Port or DAQ card.
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Xiaogang
[email protected]

There are some vi's that should work for you for the parallel port. However it has been communicated that with windows after 98 it's a little bit more complex...
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Digital ı/o problem in mseries 6229 daq card

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We will change pulses or frequencies during application). we tried to send the signals from single lines
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Hi,
You can use the correlated dio functionality of your M series board to output digital waveforms. However, you will need to construct the waveform before actually outputting the data. Here is the link to another discussion forum with more information on this including links to examples: How do I output a digital waveform?
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Im using a pci-6221 daq-card.I want to know the difference(use)of a line output and a port output.

Im using a pci-6221 daq-card.I want to know the difference(use)of a line output and a port output.

Hello Hellraiser24,
This question has actually been discussed in another thread here:
http://forums.ni.com/ni/board/message?board.id=170&message.id=95895&requireLogin=False
I hope this helps,
E.Lee
Eric
DE For Life!

How does the PCI-6229 DAQ-card communicate with CB-68LP connector block?

Hello!
I want to do a very simple task which is to just turn on/off a LED. I am using LabVIEW 7.1 and I have a DAQ-card PCI-6229. The DAQ-card is then wired to a connector block CB-68LP.
Now my problem is to figure out how the connector block communicates with the DAQ-card?
In the file I attached there is a picture of connector block and the device pinouts from the DAQ-card. But how do I know which of pinouts triggers some connector on the connectorblock?
Which are digital outputs on the DAQ-card?
Where can I read about this?
Attachments:
daqANDconnectorblock.bmp ‏2437 KB

Hello asc01001:
The digital pins of the PCI-6229 are labelled as Px.y, where x is the port name while y is the channel name. For example, pin52 of the NI 6229 is P0.0; which is also port 0, channel 0 of the digital I/O of the DAQ card.
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Please advice if this helps.

Determine number of channels on a DAQ card

Is there a function to determine the number of channels on a given DAQ card?

I found no native function to get this attribute; you can use DAQmxGetDeviceAttribute with DAQmx_Dev_AI_PhysicalChans attribute to get a list of available channels on a device and then parse the string counting channels. The following lines can be executed in the Interactive Execution window: provided the device name is correct they count how many input channels are present on the board:
#include <ansi_c.h>
#include <utility.h>
#include <NIDAQmx.h>
static int i;
static char msg[512];
static char *token;
DAQmxGetDeviceAttribute ("Dev1", DAQmx_Dev_AI_PhysicalChans, msg, 512);
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while (token) {
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The same function has equivalent attributes for analog outputs, counters and digital I/O lines / ports.
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My contributions to the Developer Zone Community
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I am thinking of purchasing the PCI-6533 DAQ card and need to know if the the 32 bits can be configured individually as input or output. I know that they can for unstrobed and static applications but I need to be using strobed or non-static. I also know that the you can set the 8 bit ports as input or output ports for highspeed. So my question is... Can I configure each individual line as input or output for highspeed applications?

Hi,
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My daq card PCI6025e' digital ports PA,PB,PC are in high state and cannot be changed even in MAX 2.1 testing panel and continuously output 5 volts even set for output.

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