Re: Converting serial I/O to ethernet I/O

On Nov 16, 8:28 am, Bob Gezelter <gezel...@xxxxxxxxx> wrote:
On Nov 16, 8:04 am, tadamsmar <tadams...@xxxxxxxxx> wrote:

I maintain a VMS real-time app. that has a serial interfaces to
analyzers. The latest version of the analyzers support network
communications and we want to convert from serial to network.

Any pointers on how to do it? I think it's a matter of making the
right QIO calls, perhaps
just revising or adding alternative QIO calls.

tadamsmar,

It may be as simple as that, or a more extensive re-write. It depends
on the actual interface specifications of the analyzers.

In my career, I have seen both. I have seen devices just change from
serial interfaces to say, a LAT or telnet scheme; and I have seen
devices adopt completely different message formats, standards, and
protocols.

In the abstract, it is not possible to answer this question from the
information in your post. It would require careful reading of the
documentation for both the old analyzers and the new analyzers, and a
review of the source code of the application.

- Bob Gezelter,http://www.rlgsc.com


The manual says it uses the the same commands over RS-232 and
Ethernet. Over Ethernet, it uses TCP/IP and port 9880.
.

Relevant Pages

  • Re: Converting serial I/O to ethernet I/O
    ... The latest version of the analyzers support network ... just revising or adding alternative QIO calls. ... on the actual interface specifications of the analyzers. ...
    (comp.os.vms)
  • Re: Converting serial I/O to ethernet I/O
    ... The latest version of the analyzers support network ... communications and we want to convert from serial to network. ... just revising or adding alternative QIO calls. ... BASEstar Classic comes with a thing called a "Generic DAS". ...
    (comp.os.vms)
  • Re: Converting serial I/O to ethernet I/O
    ... The latest version of the analyzers support network ... just revising or adding alternative QIO calls. ... Determine whether you have to work at the Ethernet level, TCP/IP ...
    (comp.os.vms)
  • Re: Converting serial I/O to ethernet I/O
    ... The latest version of the analyzers support network ... just revising or adding alternative QIO calls. ... the routines of the TCP/IP stack in use. ...
    (comp.os.vms)
  • Re: Converting serial I/O to ethernet I/O
    ... The latest version of the analyzers support network ... on the actual interface specifications of the analyzers. ... I have seen devices just change from ...
    (comp.os.vms)