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HG71 connection with siemens s7-315-2DP

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AM_TOPEC
 Post Posted: Mon Feb 18, 2008 9:26 am 
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Joined: Mon Feb 18, 2008 8:56 am
Posts: 12
Morning everyone,

This is my first project where the TIXI HG71 will be used.
As a PLC programmer i want to connect a siemens CPU S7-315-2DP to a TIXI modem HG71, to send SMS's when installations
have failled. The siemens S7- CPU(PLC) and the HG71 are on the same platform.

(1) Do i really need a PROFIBUS ADAPTER to connect these two over an MPI bus as suggested in "Manual Tixi alarm modem" pag.10.5??
because i think that an MPI bus is enougth to connect them as CPU==MPI==TIXI HG71

(2) the second question is: who should be configured as a master or slave?? and why?

Thanks!!

Best regards

Ayad
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Tixi-Support
 Post Posted: Mon Feb 18, 2008 5:58 pm 
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Tixi-Support-Team

Joined: Mon Oct 10, 2005 1:40 pm
Posts: 94
Location: Berlin
AM_TOPEC wrote:
(1) Do i really need a PROFIBUS ADAPTER to connect these two over an MPI bus as suggested in "Manual Tixi alarm modem" pag.10.5??
because i think that an MPI bus is enougth to connect them as CPU==MPI==TIXI HG71

The profibus connector is just an easy way to connect to the DSUB MPI interface, you can use your preferred MPI connection method.
AM_TOPEC wrote:
(
(2) the second question is: who should be configured as a master or slave?? and why?

The HG71 has to be "master" because slave mode is not supported.

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AM_TOPEC
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 Post Posted: Tue Feb 19, 2008 7:55 am 
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Joined: Mon Feb 18, 2008 8:56 am
Posts: 12
tHANKS A LOT!!!

BEST REGARDS,
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