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Resolved read data from a port

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  1. Clever Naranjo
    Clever Naranjo
  2. PowerBuilder
  3. Thursday, 30 November 2017 18:57 PM UTC

regards
I have a machine that measures, after measuring sends an impression with some readings to a printer connected directly to this machine, I need to read this data instead of the printer

thanks for your support

 

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Responses (2)
Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Thursday, 30 November 2017 20:44 PM UTC
  2. PowerBuilder
  3. # 1

Hi Cleaver;

  A serial port or USB  device can be read or written to using the FileOpen ( ) method. For example ...

integer li_FileNum

li_FileNum = FileOpen ( "COM1:", LineMode!, Write!, LockWrite!, Replace!)

FileRead / FileWrite ...

Just replace COM1: with the device name / port you need to access

HTH

Regards ... Chris

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José Gasparini
  1. José Gasparini
  2. Friday, 20 September 2024 20:19 PM UTC
Hi Chris,



Do you have some example FileRead to share ?



I tried to use FileOpen to read a USB port (windows redirects to COM5 port) like the example you shared, but FileOpen return -1, if use FileOpen as Write work, but doesn't to Read.



Regards José
  1. Helpful
Chris Pollach @Appeon
  1. Chris Pollach @Appeon
  2. Friday, 20 September 2024 21:36 PM UTC
HI José

Not offhand but I will look through my extensive examples to see.

Regards .. Chris
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Roland Smith
Roland Smith Accepted Answer Pending Moderation
  1. Thursday, 30 November 2017 20:13 PM UTC
  2. PowerBuilder
  3. # 2

It would be helpful if you told us the name/model of device (and a link to the device manufacturers website) and how it connects to the pc (USB, Serial Port).

 

Comment
José Gasparini
  1. José Gasparini
  2. Sunday, 13 October 2024 13:32 PM UTC
Thanks Chris / Roland for your answer, in order that I can't resolve through FilieOpen, I looking for other option and I found a non visual object that can read the port using windows dll kernel32.dll, with this option I could read the data.



Regards, José
  1. Helpful 1
John Fauss
  1. John Fauss
  2. Sunday, 13 October 2024 23:21 PM UTC
Glad to hear you found a solution, José! Would you please tell us about the NVO you are using (name, URL, etc.) so that others that may need this functionality can try it? Many thanks!
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