FieldServer FS-8704-12 - Manual (Page 21)

FS-8704-12 GE-EGD Driver Manual Page 21 of 23
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Array
Element
Contents
0-31
The first 32 bytes of the most recently received UDP packet received on port 0x4746 (The GE
EGD port).
32 PDUTypeVersion
33 RequestID
34 ProducerID
5
35 ExchangeID
36 TimeStampSec
37 TimeStampNanoSec
38 Status
6
39 ConfigSignature
40 Reserved
41 Source IP Address
1
Appendix B.6. Driver Stats
EGD producers produce data messages for Server devices to consume. The type and frequency of the messages
depends on the producer configuration. The driver counts all incoming messages of interest as the
PLC_READ_MSG_RECD statistic. Other legal messages which do not contain data of interest are discarded and are
counted as the MSG_IGNORED statistic. The PLC_READ_MSG_RECD statistic is incremented once by each Map
Descriptor which extracts data from an incoming message. Thus, one incoming message and three associated Map
Descriptors would cause the statistic to increase by three (when viewed from the connection's point of view.)
This driver can expose some driver statistics by writing data to a Data Array. A special Map Descriptor is required.
The driver recognizes the Map Descriptor by its name which must be "EGD-stats”.
The following example shows how this special Map Descriptor can be configured.
Nodes
Node_Name , Protocol
Null_Node , ge_egd
Data_Arrays
Data_Array_Name , Data_Format , Data_Array_Length
EGD_STATS , UINT32 , 100
Map_Descriptors
Map_Descriptor_Name , Data_Array_Name , Node_Name
egd-stats
, EGD_STATS , Null_Node
This Map Descriptor instructs the driver to use the Data Array EGD_STATS (in this example) to store driver specific
statistics. Only one of these Map Descriptors may be specified per FieldServer.
The driver stores the following data.
5
As a UINT32. Not in dot format
6
Read section 4.4 of GE-Fanuc document GFK-1541 for more information.