FieldServer FS-8704-12 Configuring the FieldServer as a GE-EGD Client, Data Arrays, Section Title

Page 6

FS-8704-12_GE-EGD Manual

Page 6 of 26

4.Configuring the FieldServer as a GE-EGD Client

Historically, one uses the client-server model to describe the operation of most protocols. Recently producer-consumer model protocols have started to become more numerous. The GE-EGD (Ethernet Global Data) is a producer-consumer model protocol. In equating the two models it is important to regard the consumer as a passive (FieldServer) client. Other clients typically are active and poll for new data. The consumer is a passive client in that waits to digest new data generated by a producer.

For a detailed discussion on FieldServer configuration, please refer to the instruction manual for the FieldServer. The information that follows describes how to expand upon the factory defaults provided in the configuration files included with the FieldServer (See “.csv” files provided with the FieldServer).

This section documents and describes the parameters necessary for configuring the FieldServer to communicate with a GE-EGD Producer.

The configuration file tells the FieldServer about its interfaces, and the routing of data required. In order to enable the FieldServer for GE-EGD communications, the driver independent FieldServer buffers need to be declared in the “Data Arrays” section, the destination device addresses need to be declared in the “Client Side Nodes” section, and the data required from the servers needs to be mapped in the “Client Side Map Descriptors” section. Details on how to do this can be found below.

Note that in the tables, * indicates an optional parameter, with the bold legal value being the default.

4.1.Data Arrays

 

Section Title

 

 

 

 

Data_Arrays

 

 

 

 

Column Title

Function

Legal Values

 

Data_Array_Name

Provide name for Data Array

Up to 15

alphanumeric

 

characters

 

 

 

 

 

 

 

 

FLOAT,

BIT, UInt16,

 

Data_Format

Provide data format. Each Data Array

SInt16, Packed_Bit, Byte,

 

can only take on one format.

Packed_Byte,

 

 

 

 

 

Swapped_Byte

 

 

Number of Data Objects. Must be

 

 

 

Data_Array_Length

larger than the data storage area

1-10,000

 

 

required for the data being placed in

 

 

 

this array.

 

 

 

 

 

 

 

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

Page 5 Page 7
Image 6
Page 5 Page 7
Contents FS-8704-12 GE-EGD Ethernet Global Data Table of Contents GE-EGD Ethernet Global Data Description FS-8704-12GE-EGD ManualProvided by the Supplier of 3rd Party Equipment FieldServer Technologies DescriptionHardware Connections Section Title Configuring the FieldServer as a GE-EGD ClientData Arrays Column Title Function Legal ValuesClient Side Connection Descriptors Client Side Node DescriptorsFS-8704-12GE-EGD Manual Example Driver Specific Map Descriptor Parameters FS-8704-12GE-EGD Manual Column Title Function Legal Values Map Descriptor Example Map Descriptor Basics Map Descriptor Example a Simple Consumer Map DescriptorMap Descriptor Example Multiple Consumer Map Descriptor Server Side Node Descriptors Wrbc Timing Parameters IeeeMap Descriptor Example FS-8704-12GE-EGD ManualPage 16 FS-8704-12GE-EGD Manual Create a CSV file that will consume the produced data Byte Dataq Appendix A.2. Data Types Appendix B. Error Messages Message ActionArray Contents Element Appendix B.1. EGD-ii EGD Internal IndicationsArray Element Contents Appendix B.2. Driver StatsAppendix C.2. Produced Time Stamp Appendix C.3. Status ValuesThis page Intentionally Left Blank
Top Page Image Contents