Parallel Communication (RAW?)

I have a need to use the Parallel port to send signals to an external circuit. There is no need for bi-directional support (no data needs to be sent back to the computer). I have downloaded and read through the Comm API extension documentation but eveything for the Parallel port uses "Printer" to describe everything and nothing about raw (or some device other than a printer) access.
Simply put, I would like to use 5 pins as address lines, 4 pins for data lines, and 1 strobe line (active indicator). The circuit I would be connecting to will use simple BCD decoding to decode the Address and the Data and then determine if it should do anything (based on the Strobe/Active Indicator line).
Could someone provide some input into how this could be accomplished???? (If it is possible with the current Comm API).
I'm not totally locked into the Parallel port. If it is possible only with a Serial port, then that will work fine, but we have an existing, manual, system that works with the Parallel cables and switchs so we would like to keep everything the same.

I have only gotten this to work in win98. win2000 & 95 didn't work no matter what I tried - I don't know why. In win98 though, I successfully emulated a printer (on the parallel port) by tying BUSY (pin 11) & PAPER END (pin 12) low. that's all. Then, I used STROBE (pin 1) to clock in the data on my external circuit, and used the 8 data lines to transfer the info. I don't know how you could get 9 data lines - its possible, but probably not with javax.comm .

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Gaurav k
CLD Certified !!!!!
Do not forget to Mark solution and to give Kudo if problem is solved.

Hi
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Campaign execution for parallel communication medias

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regards Camilla

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Parallel Communication

Dear All,
 Can we send data to more than two systems parallely without using BPM?
Regards,
Ashish

Bhavesh I made the following changes:
1 Rec Business Service
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1 interface mapp (source occurance 1 and for both destination messages occurance 0 to unbounded)
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<SAP:P3 />
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<SAP:AdditionalText />
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<?xml version="1.0" encoding="UTF-8"?>
<ns0:Messages xmlns:ns0="http://sap.com/xi/XI/SplitAndMerge">
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 <name>Ashish</name>
 <location>Melbourne</location>
 </ns1:ASH_MULTI_Message1>
 </ns0:Message1>
</ns0:Messages>
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Regards,
Ashish
Message was edited by:
 Ashish Goyal

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In my code i have parsed a file through which i have extracted the port name and baud rate .
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Hi Ben -- we do not log history or events in the DSC, so that is not an issue.
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How can I control individual pins of VHDCI connector on PXIe-6548?

I need to use the VHDCI interface on slot 3 i.e. NI PXIe-6548 of NI PXIe-1062Q for testing purposes. I need to raise or lower the individual lines from the available 68 lines. Do I need to use VISA to do so?
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Solved!
Go to Solution.

Thanks Keith!
I still have some problems. I appreciate every bit of your help.
How does the in-built ni HSDIO VI take care of the parallel communication protocol. e.g. There are some pins as chip-select, Rd/xWr etc. they need to be raised or lowered according to the operation. Now, I am trying to communicate with the DUT using 9 bit data, 9 bit address.
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Scrap JMS. Use plain java.net or JINI.
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But, that's just me.

Why not use application specific multicast listener in appserver cluster

Hello Friends,
I am using oracle9iAs. we have basically two enterprise application. and often they communicate to each other, currently we have message bean sending a message with is nothing more than 2 integer values. The second application uses these two integers to update specific data cache.
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Scrap JMS. Use plain java.net or JINI.
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Server A -> Server B -> Server C -> Server A
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This is vary efficent. A simple send-receive chain that is clusterd within a small (or large) group of Servers. You could also try Bi-Directional Parallel Communications BDPC. That would basically have Server A send messages to both Servers - one to the left and one to the right, then at the same time, listen for messages from the Server on the left and the Server on the right. This is better suited for large-scale clusters where a Uni-directional communications model would take too long to propogate messages to every member of the group.
But, that's just me.

Filesystem Suggestions for Oracle on Linux

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Scaling and green screen in premiere cs5.5

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Years ago we used visual communicator pro to do some green screen shooting. I frankly did not know what I was doing with the lighting, and got a lot of spill and shadow. I've been looking for a way to fix this. I recently bought cs5.5 to be able to do this with Ultra keyer.
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1_WIRE_LO_REF in NI PXI-2503

Hello,
I've used NI PXI-2503 (serial ports) to read current output signals from a circuit, and 1_WIRE_LO_REF has been used for reference (voltage input to the circuit?). To switch over to parallel communication, I will use SCB-68. In this box, I have no idea which port is equivalent to 1_WIRE_LO_REF. Which port should I use in SCB-68?
Thanks,
Mihye

Hi Mihye,
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Kyle B | Product Support Engineer | ni.com/support

Labview crashes without any warning or error messages

Hi,
I have been using Labview programs for the last 2 months without any problem. All of a sudden the program has started crashing while running. There are no error messages on the screen. The program runs for long hours and during my intermediate inspections i find that Labview has closed without any sign on the computer. This has happened about 2-3 times in the last week but before this there was no such problem. Also this problem is not specific to one program alone. There are other independent modules that have faced the same situation. No two programs are run simultaneously, and the programs use only serial (one of the program also uses parallel) communications with connected devices.
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LabView and Spider8 from HBM

I am using LabView together with the AD-converter 'Spider8' from HBM. I
downloaded the LabView driver for this measurement device from the NI
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I’m using Spider8 and LV for a small control system at more than 2 years now. System was Pentium3, LV 6.1 and Win 2000. Spider with the P22 firmware version.
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Any advice is welcome as well as was a place where I still can download the last firmware version.
Thanks,
Rodolfo

Parallel Communication (RAW?)

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