FS-8704-12_GE-EGD Manual Page 23 of 26
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Appendix B.1. EGD-ii (EGD Internal Indications)
This driver can expose data from the most recently consumed message and some
additional diagnostic information.
A special Map Descriptor is required. The driver recognizes the Map Descriptor by its name
which must be "EGD-ii" which stands for EGD Internal Indications.
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_DIAG, UINT32, 100
Map_Descriptors
Map_Descriptor_Name, Data_Array_Name, Node_name
egd-ii, EGD_DIAG, null_node
When the driver sees this Map Descriptor it uses the Data Array EGD_DIAG to store driver
specific data. Only one of these Map Descriptors may be specified per FieldServer.
The driver stores the following data.
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
2
35 ExchangeID
36 TimeStampSec
37 TimeStampNanoSec
38 Status
3
39 ConfigSignature
40 Reserved
41 Source IP Address
1
2
As a UINT32. Not in dot format
3
Read section 4.4 of GE-Fanuc document GFK-1541 for more information.
