Communication from a fieldpoint also acting as a OPC server to a simatic 545 through serial?

Hi...
I'm supose to control a breweri, and right now it is controlled by a simatic 545.
Is it possible for fieldpoint and connect directly to the PLC with OPC using serial?
I have the software to run NI's OPC server, but haven't bought a fieldpoint yet.
So i was wondering if this is possible to reuse the I/O oirts of the PLC instead of buying new I/O boards for the fieldpoint, which is very expensive.
Thanks..
Carsten Toft
Aalborg University Esbjerg, DK

The easy scenario is to use FieldPoint with the OPC server to provide distributed I/O for your HMI/SCADA application. The same HMI/SCADA application can communicate via OPC to the Simatic 545 thru serial. In this scenario, the data move from FieldPoint to Windows XP to Siemens. For slow processes and current computing technology, this scenario typically works well.
If you need FieldPoint to communicate directly over serial to the Siemens Simatic, you will need communications support in LabVIEW RT for the Simatic PLC. Typically what is recommended is to use a Modbus gateway and the LabVIEW RT modbus VIs to communicate Modbus protocol from Fieldpoint to the gateway, and the gateway then communicates over serial to the Simatic.
here are the modbus vis
http://sine.ni.com/nips/cds/view/p/lang/en/nid/201711
here is a reference for gateways
http://www.woodhead.com/products/automation/gateways/
Preston Johnson
Principal Sales Engineer
Condition Monitoring Systems
Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
National Instruments
[email protected]
www.ni.com/mcm
www.ni.com/soundandvibration
www.ni.com/biganalogdata
512-683-5444

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