Re: [foxboro] ZCP-FBM connection options

You can connect the ZCPs to the FCMs using a dedicated, private network I 
believe.  Yes, you are still using switches if you want to go to more than 
one set of FCMs, but they are not carrying mesh traffic and should not 
have to have both fieldbus networks be cross-connected as with Mesh.

What you give up in doing that is the ability for System Management to 
monitor  those switches.   But this may or may not be a problem; you can 
use other network-management tools.  In spite of that, this is how I would 
hook these up as well, because like you I don't like the 
all-eggs-in-one-basket concept of everything on the Mesh.


Corey Clingo
BASF Corp.





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[foxboro] ZCP-FBM connection options






All,

 

With the FCP270, the documented options to interface with FBM100s/200s
appear to be the following:


[AW]<-->[Mesh Control 
Network]<-->[FCP270]<-->[FBI-100]<-->[FBM-100]<-->[Process]
&
[AW]<-->[Mesh Control Network ]<-->[FCP270]<-->[FBM-200]<-->[Process]

 

The primary benefit of the above approaches, in my mind, is that the
interface between the FCPs and the FBMs is closed, proprietary,
point-to-point & unmanaged.

 

With the ZCP, however, the documented interfaces between the CP and the 
FBMs always
appear to be through some type of  Mesh network (either a combined Mesh
Control+Fieldbus network, or standalone Mesh Fieldbus Network).


The drawback, in my mind, is that there are TCP/IP based managed "open" 
network devices between the Controller and I/O. The impact of 
planned/unplanned outages of this mesh-control/fieldbus-network when using 
conventional 4-20A based field-devices (as opposed to FF) is essentially 
loss of Level 1 control. 

 

Is there a supported option to connect a ZCP to
FBM 200/100s without using the mesh-network (as possible with the FCPs)?

 

Thanks,
Daniel

 



 
 
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