If the system you want to acquire data from is a Johnson Controls Metasys BAS you might want to take a look at the S4 Open OPC N2 Router and S4 Open BACnet N2 Router at http://www.thes4group.com.
Yes. From bottom to top:
1) A gateway that acts as a Modbus slave that maps digital/analog i/o
registers to building automation points.
2) An OPC server in the operator workstation.
3) An SQL server connection from the operator workstation to an SQL
database server.
Best,
B.O. Feb. 2, 2006
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Robert Old, System Architecture, [email protected]
Siemens Building Technologies, Inc., Building Automation
1000 Deerfield Pkwy., Buffalo Grove, IL 60089-4513 USA
Phone: +1(847)941-5623, Fax: +1(866)699-0126
Ok your requirements are matching with Pcvue Scada software. It is modbus master (for serial link) and slave/master (for Modbus-TCP/IP) It is OPC client AND Server. It integrates Lonworks communicating with Lon equipments without any gateways. It can be linked with SQL Server or any Database supporting ADO.
You didn't write the Building Managment System technology you want to use. Is it Lonworks or BacNet (or another one...)? For Lonworks, Pcvue is ok. But for BacNet Pcvue needs a BacNet's OPC server.
I have seen that you are located in US. For more details you can contact our US office: [email protected]