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06 FST OPC Server for FieldServers
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FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: support@fieldServer.com
6. Configuring Your OPC Client to use the FST OPC Server for FieldServers
OPC Server.
The OPC Client refers to the Application Using the data available in the FieldServer. Normally
this is a SCADA system or other third party software.
From your Client browse the OPC Servers installed on the machine. Select the one named
“FieldServer.7.16k”. If you installed the Server on this machine then your Client should find this
listed. If the FST OPC Server for FieldServers is on another machine then browse to that
machine and select “FieldServer.7.16k”. If it is not visible, check that the hidden application
“OPCENUM.EXE” is running on the Server machine. If this fails please refer to the
troubleshooting section
You have now successfully connected to the Server; next browse the Server. (If your Client
does not have a browse facility, you will need to enter addresses manually see below). The
Browse hierarchy has two levels - FieldServers & Data Arrays. Each entry under Data Arrays is
a hint, pointing to the first element of the Data Array, The user needs to delete the hint text and
edit the offset number on the end to enter the desired address.
I/O addresses are in the following format (Analog & Bit Datatypes)
<FieldServerName>:<Data Array name>:<offset>
Address format for packed bits in Integer types
<FieldServerName>:<Data Array name>:<offset>:<bit>
* note for packed bits the OPC datatype MUST be VT_BOOL
6.1. OPC datatypes
This driver only has 2 canonical datatypes : VT_BOOL & VT_R4 (float). The default if no
datatype is specified is VT_R4 (floating point). Many OPC Clients do not specify the
datatype forcing the default.