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<== Date ==> <== Thread ==>

Subject: modbus questions
From: Pierrick Hanlet <hanlet@fnal.gov>
To: Tech Talk <tech-talk@aps.anl.gov>
Date: Wed, 9 May 2012 10:33:25 -0500
Hi,
First, let it be known that I'm new to modbus.

My questions are as follows:
1) The download site has a link to V2.4, but what is there for downloading only goes to V2.3;
     nonetheless, there is V2.4 documentation.  Where is it?
2) I have a read command that I only want to perform once, how can I do so? It wants to
    continue polling.
3) I can't find any sample code for writing.  Specifically, I want to write (and read) from the
    analog output holding registers for my device (40001-4999) with function 16 (and 3 for read).
    Are there any examples from which I can glean?  I would like to see both the database entries
    as well as the drvModbusAsynConfigure commands.

Thank you,
Pierrick

"Whether you think you can or think you can't, either way, you are correct" -- Henry Ford
_______________________________________________________________
Pierrick Hanlet
IIT/Fermilab
+1-630-840-5555 (FNAL)
+1-312-567-5745 (IIT)
+1-630-697-8758/+44-79-48-860-1978 (US/UK mobile)

Replies:
RE: modbus questions Mark Rivers

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