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

Subject: Re: SIemens PLCs
From: "Umashankar Panda" <[email protected]>
To: "Rod Nussbaumer" <[email protected]>
Cc: [email protected]
Date: Fri, 26 Sep 2008 14:06:19 +0530
Dear Sir,

We have also a similar application related to Siemens PLC and EPICS.
We have written a program in siemens s7 PLC for Modbus TCP slave. We
are using AG-SEND and AG-RECEIVE function block of S7 siemens PLC. On
EPICS side we are using Mark Rivers' Modbus device support.

It is now tested for function code 01 (read multiple coils), 03 (read
multiple registers), 05 (write single coil), 06 (write single
register). We are now trying to write siemens side program for other
multiple write function codes.

If you have some program regarding siemens PLC modbus TCP slave code
which can take care of multiple register write (function code 16),
please share with us.

With regards

U. Panda
Variable Energy Cyclotron Centre
Kolkata, India


On Thu, Sep 25, 2008 at 9:24 PM, Rod Nussbaumer <[email protected]> wrote:
> Dalesio, Leo wrote:
>>
>> Has anyone integrated the diagnostics from SIemen's PLCs into EPICS?
>> Thanks,
>> Bob
>>
> Not sure exactly what you mean by 'diagnostics'. If you mean EPICS device
> support for Siemens PLCs, I have a work in progress that is fairly well
> advanced, on that level. It is for Siemens S7 style protocol, and is based
> heavily on Mark Rivers' Modbus device support.
>
> Rod Nussbaumer
> ISAC Controls, TRIUMF
> Vancouver, Canada
>
>
>



--

References:
SIemens PLCs Dalesio, Leo
Re: SIemens PLCs Rod Nussbaumer

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