TNT4882 as controller in charge?

Hello All,
Can anyone tell me if the TNT4882 chip can be configured to act as the
controller in charge on the gpib bus?
The software manual for the chip indicates that is has capability code
C0, which apparently means no controller capability. This seems
straightforward, but I understand that the TNT chip is basically a
supercharged NAT4882, which seems to have CIC capability.
Any information would be appreciated.
Thanks,
-- Tony Tero

Hi,
Thanks for the reply.
We don't usually need CIC capability in our products, but we have a
requirement for a custom one-of product where several of our boxes
need to talk to each other directly without a host PC. Since our
existing product has a GPIB interface using the TNT4882, we were
considering the possibility of having one becoming CIC and controlling
the others.
Our backup plan is to use RS485.
Thanks Again,
-- Tony Tero
On Fri, 4 Oct 2002 13:01:24 -0500 (CDT), DiegoF wrote:
>Hi,
>
>The TNT4882 does not have controller capabilities. This chip is only
>for talker/listener applications. The TNT uses much of the NAT4882
>circuitry, but also includes the bus transceiver and Turbo circuitry.
>
>You can get all the information o
n the available chips at :
>http://www.ni.com/support/gpib/reg_prog.htm
>
>What type of device are you developing?. Do you need controller
>capability?
>
>DiegoF
>National Instruments.

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Command requires GPIB Controller to be Controller in Charge

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Hi,
The two error descriptions refer to the fact that the error code (1) has a different meaning depending on what software component gave the error: labVIEW or GPIB (NI-488.2).
Since you are able to use the Getting started VI, that means that the GPIB bus, driver and the VISA library are working porperly. Additionally, you would not get a Controller in Charge error if do not explicitly configure the board to be non system controller. labVIEW automatically configures the board to be controller.
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I couldn't find the instrument driver at www.ni.com/idne
t, so I didn't take a look at the driver.
DiegoF
National Instruments.

Command requires GPIB Controller to be Controller in Charge on dequeue element

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NI 488: command requires GPIB controller to be controller in charge

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here is the info from the power portion of the system prefs (with the power cord plugged in):
System Power Settings:
AC Power:
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Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 20
Dynamic Power Step: No
Reduce Processor Speed: No
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On LAN: Yes
Wake On Modem Ring: Yes
Display Sleep Uses Dim: Yes
Battery Power:
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Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 5
Dynamic Power Step: Yes
Reduce Processor Speed: No
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On Modem Ring: No
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
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Voltage (mV): 14916
Cycle Count: 360
AC Charger Information:
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Hardware Configuration:
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There may be other issues in the computer's hardware, such as the
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Also, there is a chance the DC-in Board may be defective or have a
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There are some pages at iFixit.com about how to remedy this defect;
and parts are available to repair this, still. (But suspect the battery, 1st.)
I'm looking at the charging information on your log report and wonder if
the battery is the reason why there is a Zero, in that section; or if there
is some DC-in Board reason. Without a known-good battery, it's hard to
tell what else may be going on. Unless you take it to a Genius bar...(?)
• iBook G4 - iFixit guides:
http://www.ifixit.com/Browse/iBook_G4
This appears to be closer to the specific guide page, to include your iBook:
http://www.ifixit.com/Device/iBookG4_14%22_933_MHz-1.33GHz
Troubleshooting power related issues in a portable computer can be a
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There also is a matter of calibrating a battery on a routine basis, to be sure
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http://support.apple.com/kb/HT1490?viewlocale=en_US
The battery is the most likely culprit in the matter of the charge light indicator
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(as noted in Profiler's battery or energy information, hi-power/low-use cycles)
you may be able to check the activity without additional purchases.
Be sure to get a replacement battery from a reputable company, as some of
the third-party cheap imports have less battery capacity when new than an
old partially used Apple battery would have. (And flaky warranty, too.)
The battery is the most likely item, at this point. A replacement is suggested.
Good luck & happy computing!

How do you make the GBIB controller a talker or listener?

I want to make my computer emulate an instrument with LabView over GPIB. How do I do it?
I want it to appear as an instrument to another computer.

Hello,
The easiest way to do this is to use NI-Device:
http://sine.ni.com/nips/cds/view/p/lang/de/nid/13047
This will allow your GPIB interface to behave like an instrument (which you define). You can pass controller in charge status from your controller to another interface or instrument which has controller capability, and then set up a polling or event waiting in order to simulate an instrument. For example you could read and ignore timeout errors, and then respond based on what you read. However, if you want to build the functionality of an instrument, NI-Device will give you more flexibility.
For an example VI which uses LabVIEW as a non-controller (GPIB Instrument):
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3D87556A4E034080020E74861&p_node=DZ52353
For information on passing controller in charge status, see:
http://digital.ni.com/public.nsf/websearch/873BE8238AD6B0BA86256B1B004DC203?OpenDocument
Thank you,
JLS
Best,
JLS
Sixclear

How do I configure my PCI-GPIB cards so that one is a controller and the other is a device being controlled by the first card

I have 2 PC's, both fitted with PCI-GPIB cards. One will be the system controller and the other will be a device on the GPIB bus. How do I configure both cards using LabWindows/CVI v7.0 to achieve this ? What commands are used to send and receive the data ?

Hi Pete,
For the controller board you don't really need to do anything. By default the GPIB interface is configured as controller.
The non-controller can be configured in MAX. Right-click on the interface, uncheck the ono-controller box and change the primary address. It is usually a good idea to set these parameters programatically. Use ibpad to set the primary address and ibrsc to release system control.
For the controller you can use a device descriptor (using ibdev) or a board descriptor (ibfind).
You can only open a reference to the non-controller board using ibfind (ibfind("gpib0"), for example). This will open a board reference. You cannot use a device reference because that implies that the board is capable of addressing the bus. On
ly the system controller can.
Here are some links I found on the web on this subject:
Passing GPIB Control -- System Controller vs. Controller In Charge
Tutorial: Programmatic File Transfers over the GPIB
Example: Using a C Program as a GPIB Non-Controller with LabVIEW as the GPIB Controller
Example: Serial Polling Between Two Computers (Controller and Non-controller)
Hope this helps.
DiegoF
National Instruments.

Non-controller applications

I am writing a non-controller device handler. It should look like a GPIB device. The examples of this type of code I've seen in the Developer Exchange use the ibrd command. When I use this command I get an ECIC (not controller in charge) error. I don't want to be a controller, I just want to read GPIB data that was sent to me. Is ibrd not the appropriate command? Or might I be doing something else wrong?
Thanks,
Bob

I went to www.ni.com and searched "+non-controller +gpib" and got several pages about this. The one titled "Computer to Computer Communication via the GPIB" is a good place to start.

Does NI GPIB usb controller have functionality of controlling all common lab devices,

which NI hardware is better , and does GPIB support real time programming, plase could you help me i am totally new to LABVIEW.
And cant we use GPIB for parallel controlling at he same time, because it states in the users manuel about Controller in Charge (CIC).
Please if you can show me a way i go ahead and understand i will be so pleased with best regards !..

The controller in charge only refers to the control source -- usually, a PC. So you have one PC controlling a bunch of instruments.
Some instruments can act as controllers (and some have to, but those are usually older or special purpose instruments). So you can give up and take control -- but that's a more advanced topic than most people ever need.
-Matt Bradley
************ kudos always appreciated, but only when deserved **************************

Build dll error in application builder 8.6.1

Hello,
I get always an error in the LV 8.6 application builder, when I build a dll. There is only one function in it, that has a string and an error input, and nothing else. I attach a screenshot of the VI prototype, and hier is the error description:
Error 1 occurred at Building DLL.
A component needed for Application Builder does not support the required functionality. This might have been caused by installing an older version of LabVIEW after this version was installed. Reinstall the current LabVIEW version to correct this issue.
Possible reason(s):
LabVIEW: An input parameter is invalid. For example if the input is a path, the path might contain a character not allowed by the OS such as ? or @.
=========================
NI-488: Command requires GPIB Controller to be Controller-In-Charge.
After that I reinstalled LV8.6, I tried to reinstall only the 8.6 app builder, but no success.

Hello,
thank you for the reply.
I have solved the problem. I uninstalled the last installed LV version, this was 8.0. Then ran appbuilder again in 8.6, then I have got an instruction to run applibs\lvdllbuilder\lvdb.exe. Since then works.
regards
Mitulatbati

TNT4882 as controller in charge?

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