FieldServer Computer Drive FS 8704 12 User Manual

A Sierra Monitor Company  
Driver Manual  
(Supplement to the FieldServer Instruction Manual)  
FS-8704-12 GE-EGD (Ethernet Global Data)  
APPLICABILITY & EFFECTIVITY  
Effective for all systems manufactured after May 1, 2001  
Driver Version:  
1.02  
Document Revision: 1  
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1.  
GE-EGD (Ethernet Global Data) Description  
The GE-EGD (Ethernet Global Data) driver allows the FieldServer to transfer data to and from  
devices over Ethernet using GE-EGD (Ethernet Global Data) protocol. There are two Ethernet  
ports standard on the FieldServer. The FieldServer can emulate either a Server or Client.  
GE Fanuc Automation and GE Drive Systems developed an Ethernet Global Data, or EGD,  
exchange for PLC and computer data in 1998. EGD uses UDP or datagram messages for fast  
transfer of up to 1400 bytes of data from a producer to one or more consumers. UDP  
messages have much less overhead than the streaming TCP connection used for programming  
or CommReq’s over SRTP Ethernet. Like Genius® broadcast input or directed control  
messages, UDP messages are not acknowledged. They can be sent at short intervals.  
Chances of one or more messages being dropped are small on a local area network.  
As a client the FieldServer acts as an EGD consumer. As a master the FieldServer acts as an  
EGD producer.  
The IC697CMM742 Ethernet module supports both GE SRTP and GE EGD.  
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: [email protected]  
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2.  
Driver Scope of Supply  
2.1. Supplied by FieldServer Technologies for this driver  
FieldServer Technologies  
PART #  
Description  
FS-8915-10  
FS-8704-12  
UTP cable (7 foot) for Ethernet connection  
Driver Manual.  
2.2.  
Provided by the Supplier of 3rd Party Equipment  
EGD capable GE communication/processor module.  
The IC697CMM742 modules configured with Control and IC693CPU364 and IC200CPUE05  
configured with VersaPro can send and receive EGD.  
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: [email protected]  
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3.  
Hardware Connections  
The FieldServer is connected to the Site Ethernet as shown below.  
Configure and connect the "GE TCP/IP Ethernet Interface Type 2" according to manufacturer’s  
instructions.  
N7  
Site Ethernet  
(408)-262-2299  
FIELDSERVER  
GE-EGD  
CONNECTION DIAGRAM  
BASE NAME:  
FILE NAME:  
DATE: 2/4/04  
BY: MF  
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: [email protected]  
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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  
Up to 15 alphanumeric  
characters  
Data_Array_Name  
Provide name for Data Array  
FLOAT,  
BIT,  
UInt16,  
Provide data format. Each Data Array SInt16, Packed_Bit, Byte,  
Data_Format  
can only take on one format.  
Packed_Byte,  
Swapped_Byte  
Number of Data Objects. Must be  
larger than the data storage area  
required for the data being placed in  
this array.  
Data_Array_Length  
1-10,000  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com  
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Example  
// Data Arrays  
Data_Arrays  
Data_Array_Name,  
DA_AI_01,  
DA_AO_01,  
DA_DI_01,  
Data_Format,  
UInt16,  
UInt16,  
Bit,  
Data_Array_Length  
200  
200  
200  
200  
DA_DO_01,  
Bit,  
4.2.  
Client Side Connection Descriptors  
Section Title  
Adapter  
Column Title  
Adapter  
Protocol  
Function  
Adapter Name  
Specify protocol used  
Legal Values  
N1,N2  
GE_EGD  
Example  
// Client Side Connections  
Adapters  
Adapter,  
N1,  
Protocol  
GE_Egd  
4.3.  
Client Side Node Descriptors  
Section Title  
Nodes  
Column Title  
Function  
Legal Values  
Up to 32 alphanumeric  
characters  
Node_Name  
Node_ID  
Provide name for node  
This keyword is not required.  
Nnn.nnn.nnn.nnn  
Where nnn is in the range 0-  
255.  
The IP address in dot format  
of the EGD-Device.  
IP_Address  
Protocol  
Specify protocol used  
GE_Egd  
Specify  
which  
adapter  
Adapter  
connects to the network the N1, N2  
EGD-device is connected to.  
Example  
// Consumer (Passive Client) Side Nodes  
Nodes  
Node_name,  
node_A,  
IP_Address,  
192.168.1.102,  
Adapter,  
N1,  
Protocol  
ge_egd  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com  
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4.4.  
4.4.1.  
Client Side Map Descriptors  
FieldServer Specific Map Descriptor Parameters  
Column Title  
Function  
Legal Values  
Up to 32 alphanumeric characters.  
The Map Descriptor name can be any  
name that has meaning to you and  
need not be unique.  
Name of this Map  
Descriptor  
Map_Descriptor_Name  
This driver recognizes a special Map  
Descriptor name; "EGD-ii". It stands for  
EGD Internal Indications. Its use is  
more fully explained in Appendix B.1 of  
this manual.  
Name of Data Array  
where data is to be  
stored in the  
One of the Data Array names from  
“Data Array” section above  
Data_Array_Name  
FieldServer  
Starting location in  
Data Array  
Function of Client  
Map Descriptor  
0 to maximum specified in “Data Array”  
section above  
Data_Array_Location  
Function  
Passive  
4.4.2.  
Driver Specific Map Descriptor Parameters  
Column Title  
Function  
Legal Values  
One of the node  
names specified in  
“Client Node  
Node_Name  
Length  
Name of Node to fetch data from  
Descriptor” above  
Number of points being consumed for Bit  
values this represents the number of bytes  
(i.e. number of points divided by 8)  
1 - 1000  
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Column Title  
Function  
Legal Values  
The following keywords apply only to the GE-EGD protocol.  
This identifies the GE device producing the  
EGD data. Although in decimal dot format, it  
is not an IP address and does not necessarily  
correspond to the IP address of the GE-  
Ethernet port producing the message. It  
corresponds to the producer ID configured for  
the CPU producing the data.  
Nnn.nnn.nnn.nnn  
ge_producerId The default value is typically the same as the  
IP address of the producer but the value can  
be changed and it is possible for one device  
to have multiple Ethernet interfaces and  
hence multiple IP addresses.  
Where nnn are in the  
range 0-255.  
Any change to the producerID must be  
matched by  
a
similar change in the  
consumer's configuration.  
Used with the the producerID, to uniquely  
identify a packet of EGD data. Thus, this  
ge_exchangeId driver uses these two parameters to match a  
produced data packet with one or more  
passive Map Descriptors.  
Integer values >= 1  
Each produced data packet contains raw  
packed data. Nothing in the message  
identifies the structure or type of the incoming  
Byte, Bit, Word,  
Dword, Int , Long  
Float (4 byte IEEE real  
number) or Double (8  
byte IEEE real  
ge_data_type  
data. The Driver therefore cannot  
differentiate between byte, integer, real ...  
numbers and requires the specification of this  
keyword to unpack the data buffer.  
number).  
If the producer has been configured to  
produce data of multiple types in one data  
packet then you will need multiple Map  
Descriptors to decode them. The ge_offset is  
used to point to the first byte in the data  
packet to be processed by the Map  
Zero, Any positive  
integer  
ge_offset  
Descriptor. Typically the Map Descriptor for  
the 2nd, 3rd ... Map Descriptors associated  
with one data packet will be non-zero.  
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4.4.3.  
Map Descriptor Example. 1 - Map Descriptor Basics  
In this example the basics required for each consumer Map Descriptor are explained.  
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function,  
node_name,  
Node_A,  
Length, ge_producerID, ge_exchangeID  
A1,  
DA_AI3,  
5,  
Passive,  
1,  
0.0.0.1,  
1
When you  
define Map  
Descriptors to  
consume EGD  
data they must  
be passive.  
Data processed  
The first element  
of data will be  
stored in the  
Data Array in  
the 6th position  
(Array elements  
are indexed  
The node name  
ties the Map  
This is the number  
of data elements  
that will be  
consumed from the  
message be  
These  
by this Map  
Descriptor will  
be stored in this  
array.  
parameters are  
required but will  
be explained in  
the next  
Descriptor to a  
node which in  
turn ties the Map  
Descriptor to an  
adapter and a  
protocol.  
processed using this  
Map Descriptor.  
example.  
from zero.).  
4.4.4.  
Map Descriptor Example. 2 - A Simple Consumer Map Descriptor  
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, node_name, Length, ge_producerID, ge_exchangeID, ge_Data_Type  
A1,  
DA_AI3,  
0,  
Passive,  
Node_A,  
20,  
0.0.0.1,  
1,  
Int  
This is the dot format ID of the  
producer. It is not the IP address of the  
producer's Ethernet node.  
The data in the data packet will be treated as  
16 bit (two byte) signed integers. As the  
length=20 a total of 40 bytes will be processed.  
This is a numeric value  
assigned by the PLC  
programmer to identify a  
specific data exchange to be  
received by the consuming  
device (the FieldServer in this  
case). It must match the ID  
specified in the producer.  
This value identifies the producing  
processor.  
The type of the Data Array should be capable  
of storing signed integers in this example.  
This and the exchangeID uniquely  
identify a produced data packet.  
If you do not use this keyword then the driver  
will process the data as bytes.  
The data type is more completely explained in  
section Appendix A.1  
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4.4.5.  
Map Descriptor Example. 3 - Multiple Consumer Map Descriptor  
In this example we assume that one produced data packet (produced by 0.0.0.1 and identified as exchange 1) contains different  
types of data elements making up the single exchange. This is configured when configuring EGD for the producer. The  
arrangement of data must correspond exactly with the configuration of the Map Descriptors used to consume the data. The following  
two Map Descriptors imply that the exchange contains at least 180 bytes of data and that the first 40 bytes contain 20 word values  
and that bytes 100 to 179 contain bit values. We cannot deduce what bytes 40-99 contain. Perhaps we have no interest in this  
produced data.  
Map_Descriptor_Name,  
A1,  
A2,  
Data_Array_Name,  
DA_AI3,  
DA_DI1,  
Data_Array_Offset,  
0,  
0,  
Function,  
Passive,  
Passive,  
node_name,  
Node_A,  
Node_A,  
Length,  
20 ,  
80 ,  
ge_producerID,  
0.0.0.1 ,  
0.0.0.1,  
ge_exchangeID,  
1,  
1,  
ge_Data_Type,  
Int,  
Bit,  
ge_offset  
0
100  
The producerID and  
The 2nd Map  
Descriptor will  
process data  
bytes starting at  
byte 100. As the  
first byte is  
identified as byte  
zero, byte 100 is  
actually the 101st  
byte in the data  
part of the  
exchangeID for  
both these Map  
Descriptors are  
identical.  
Therefore they will  
both be applied to  
the same  
The data types are different.  
The one Map Descriptor will  
be used to interpret  
incoming data as integers  
and the other will interpret  
data as bits. These data  
types must correspond to  
the way the producer is  
configured.  
incoming data  
packet.  
message.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com  
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5.  
Configuring the FieldServer as a GE-EGD Server  
5.1.  
Server Side Connection Descriptors  
Section Title  
Connections  
Column Title  
Adapter  
Protocol  
Function  
Adapter Name  
Specify protocol used  
Legal Values  
N1,N2  
GE_EGD  
Example  
Adapters  
Adapter,  
N1,  
Protocol  
GE_Egd  
5.2.  
Server Side Node Descriptors  
Section Title  
Nodes  
Column Title  
Function  
Legal Values  
Up to 32 alphanumeric  
characters  
Node_Name  
Node_ID  
Provide name for node  
This keyword is not required.  
Nnn.nnn.nnn.nnn  
Where nnn is in the range 0-  
255.  
The IP address in dot format  
of the EGD-Device.  
IP_Address  
Protocol  
Specify protocol used  
GE_Egd  
Specify  
which  
adapter  
Adapter  
connects to the network the N1, N2  
EGD-device is connected to.  
Example  
// Producer(Active Server) Side Nodes  
Nodes  
Node_name,  
node_A,  
IP_Address,  
192.168.1.102,  
Adapter,  
N1,  
Protocol  
ge_egd  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com  
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5.3.  
5.3.1.  
Server Side Map Descriptors  
FieldServer Specific Map Descriptor Parameters  
Column Title  
Function  
Legal Values  
Up to 32 alphanumeric characters.  
The Map Descriptor name can be any  
name that has meaning to you and in  
fact duplicate name will not produce an  
error.  
Name of this Map  
Descriptor  
Map_Descriptor_Name  
This driver recognizes a special Map  
Descriptor name; "EGD-ii". It stands for  
EGD Internal Indications. Its use is  
more fully explained in section 6 of this  
manual.  
Name of Data Array  
where data is to be  
stored in the  
One of the Data Array names from  
“Data Array” section above  
Data_Array_Name  
FieldServer  
Starting location in  
Data Array  
Function of Client  
Map Descriptor  
0 to maximum specified in “Data Array”  
section above  
Data_Array_Location  
Function  
WRBC  
5.3.2.  
Driver Specific Map Descriptor Parameters  
Function  
Column Title  
Legal Values  
One of the node  
names specified in  
Node_Name  
Length  
Name of Node to fetch data from  
“Producer  
Node  
Descriptor” above  
1 - 1000  
Length of Map Descriptor  
Only one Map Descriptor may be  
configured for each exchangeID. Each  
produced exchange is thus limited to one  
data type and to data from one Data  
The  
keywords  
only to the GE-  
EGD protocol.  
following  
apply  
Array.  
This is different from the  
configuration  
Descriptors.  
of  
consumer  
Map  
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Column Title  
Page 14 of 26  
Function  
Legal Values  
This identifies the GE device producing  
the EGD data. Although in decimal dot  
format, it is not an IP address and does  
not necessarily correspond to the IP  
address of the GE-Ethernet port  
producing the message. It corresponds  
to the producer ID configured for the  
CPU producing the data.  
Nnn.nnn.nnn.nnn  
ge_producerId  
The default value is typically the same as  
the IP address of the producer but the  
value can be changed and it is possible  
for one device to have multiple Ethernet  
interfaces and hence multiple IP  
addresses.  
Where nnn are in the  
range 0-255.  
Any change to the producerID must be  
matched by a similar change in the  
consumer's configuration.  
This and the producerID uniquely identify  
a packet of EGD data.  
Thus, the  
consumer uses these two parameters to  
update. Any change to the exchangeID  
must be matched by a similar change in  
the consumer's configuration.  
ge_exchangeId  
Integer values >= 1  
Each produced data packet contains raw  
packed data.  
Byte,  
Bit,  
Word,  
This keyword is used to tell the driver Dword, Int , Long  
how to pack the data into the message. Float (4 byte IEEE real  
Thus you can read from a BIT array in number) or Double (8  
ge_data_type  
the FieldServer but send the data as byte  
words for storage in %R (register number).  
memory) in the GE-PLC.  
IEEE  
real  
See section Appendix  
Any change to the data type must be A.1 for a full list.  
matched by a similar change in the  
consumer's configuration.  
Not  
Descriptors.  
required  
for  
producer  
Map  
ge_offset  
5.3.3.  
Timing Parameters  
Legal  
Values  
Column Title  
Scan_Interval  
Function  
Rate at which data is produced. This is the equivalent of  
the producer interval.  
>0.1s  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com  
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5.3.4.  
Map Descriptor Example.  
Map_Descriptor_Name,  
A1,  
Data_Array_Name,  
DA_AI3,  
Data_Array_Offset,  
0,  
Function,  
Wrbc,  
node_name,  
Node_A,  
Length,  
100  
Scan_Interval,  
5.0s ,  
ge_producerID,  
0.0.0.1,  
ge_exchangeID,  
1,  
ge_data_type  
%R  
The consumer  
must be  
Defines how data is  
configured to have  
the same  
producerID and  
exchangeID.  
These two fields  
are the only way it  
has of  
differentiating one  
set of produced  
data from another.  
packed into the data part  
of the message.  
Consider this as  
the producer  
interval.  
Only a wrbc can be  
used to produce data.  
The other write  
functions are not  
periodic.  
In this example data will  
be packed words  
(unsigned 16 bit integers)  
suitable for storage in  
register memory in the GE  
PLC's.  
Section Appendix A.1  
contains a full list.  
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: [email protected]  
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Appendix A. Advanced Topics  
Appendix A.1. Enable the FieldServer to read data from a 90-xx PLC.  
Appendix A.1.1. Use Versapro to configure/look at the EGD  
configuration.  
Produced data must be produced for a specific consumer. Thus you must create a new  
exchange in the PLC that will produce data for the FieldServer. (Specific consumer  
means specific IP address).  
Since the EGD data packet is not structured, the FieldServer cannot decode the data  
ranges without the Map Descriptors. It is therefore important that the data ranges in the  
produced exchange correspond to the Map Descriptors in the CSV file.  
Go online.  
View Menu, Hardware Configuration. (Launches HWC program).  
HWC. Edit. Rack Operations. EGD Configuration.  
Add an exchange. Set the CONS ADDRESS equal to the IP address of the  
FieldServer.  
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This is the producerID.  
It may be the same as the IP address  
of the adapter but this is not always  
the case.  
Note the Local Producer address. Typically it will be the same as the IP of the  
closest GE Ethernet port. You can override this.  
Add Ranges. Record the offset and reference for each data range in the exchange.  
Save your work.  
Close HWC.  
Stop the processor.  
Store the Hardware settings to the PLC  
Put the processor back in run mode (must be running to produce.)  
A second screen image shows that this exchange actually has an additional range at  
offset 8.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com  
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You will need this  
adapter’s IP  
address. It will be  
used as the node IP  
address in the CSV  
file.  
5.3.5.  
Create a CSV file that will consume the produced data.  
An example is shown on the following page.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com  
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Page 19 of 26  
Adapters  
Adapter,  
N1,  
protocol  
ge_egd  
Nodes  
Node_name,  
PLC90-30,  
IP_Address,  
216.232.242.3,  
Adapter,  
N1,  
Protocol  
ge_egd  
This is the IP address of the producing port. You can  
obtain this by using the Versapro HWC program and  
double clicking on the Module with the adapter shown in  
the EGD configuration. (Fred, in this example) Now look  
for the Ethernet port address.  
Nodes  
Node_name,  
null_node,  
Protocol  
ge_egd  
Data_Arrays  
Data_Array_Name,  
DA_AO_01,  
DA_AI_00 ,  
DA_AI_01 ,  
DA_AI_02 ,  
DA_AI_03 ,  
DA_AI_04 ,  
DA_AI_05 ,  
DA_AI_06 ,  
DA_AI_07 ,  
EGD_DIAG ,  
EGD_STATS,  
Data_Format,  
Float,  
BYTE ,  
Data_Array_Length  
200  
100  
100  
100  
100  
100  
100  
100  
100  
100  
100  
BIT ,  
UINT16 ,,  
UINT32,  
SINT16,  
SINT32,  
FLOAT,  
FLOAT,  
UINT32,  
UINT32,  
Map_Descriptors  
Map_Descriptor_Name,  
Data_Array_Name,  
Node_name  
null_node  
null_node  
egd-ii  
,
EGD_DIAG  
,
egd-stats  
,
EGD_STATS  
,
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com  
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FS-8704-12_GE-EGD Manual  
Page 20 of 26  
Map_Descriptors  
Map_Descriptor_Name,  
Data_Array_Name,  
Data_Array_Offset,  
Function,  
Passive,  
Passive,  
Passive,  
Passive,  
Passive,  
Passive,  
node_name,  
PLC90-30,  
PLC90-30,  
PLC90-30,  
PLC90-30,  
PLC90-30,  
PLC90-30,  
Length,  
ge_producerId,  
1.2.3.4,  
1.2.3.4,  
1.2.3.4,  
1.2.3.4,  
ge_exchangeId,  
ge_data_type,  
ge_offset  
Q1,  
R1,  
I1,  
R2,  
I2,  
DATA_Q,  
DATA_R,  
DATA_R,  
DATA_R,  
DATA_R,  
DATA_R,  
0
0
0
1
2
1
1,  
1,  
2,  
1,  
1,  
1,  
1,  
1,  
1,  
1,  
1,  
1,  
%q,  
%r,  
%u,  
%r,  
%i,  
0
1
3
5
7
8
1.2.3.4,  
1.2.3.4,  
Q2,  
%q,  
Read the section on data types to  
see how many items are being  
transmitted. Note that the %Q, %I  
references are actually byte  
These offsets must  
correspond to the offsets  
in the EGD configuration.  
references and not bit references as  
they are always produced in  
multiples of 8 and are always byte  
aligned.  
Must correspond to  
the ‘Local Producer’ in  
the EGD configuration.  
Is not necessarily the  
IP address of the  
These data types must  
correspond to the  
references in the EGD  
range configuration.  
producer port.  
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: [email protected]  
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FS-8704-12_GE-EGD Manual  
Appendix A.2. Data Types  
Page 21 of 26  
Each produced data packet contains up to 1400 bytes of unstructured data. The  
specification of the ge_data_type in the Map Descriptor tells the driver how to interpret these  
raw data bytes.  
The minimum data unit processed is a byte. This is the case even when the data type is  
specified as bit. This is because EGD producers cannot produce a single bit. When bits are  
produced the producer determines the closes byte boundary and sends a minimum of 8 bits.  
The following data types are recognized by the driver  
Byte  
Bit  
Word  
(translated as 8bits aligned with a byte boundary)  
(unsigned 16bit integer)  
Dword (unsigned 32bit integer)  
Int  
(signed 16bit integer)  
Long  
Float  
(signed 32bit integer)  
(translated as an IEEE 4 byte real number)  
Double (translated as an IEEE 8 byte real number)  
The following GE Specific data types are also recognized.  
Type Description P-ProducerC-Consumer  
%R  
Register memory in word mode P/C  
%AI Analog input memory in word mode P/C  
%AQ Analog output memory in word mode P/C  
%I  
Discrete input memory in byte mode P/C  
Discrete output memory in byte mode P/C  
Discrete temporary memory in byte mode P/C  
Discrete momentary memory in byte mode P/C  
%Q  
%T  
%M  
%SA Discrete system memory group A in byte mode P/C  
%SB Discrete system memory group B in byte mode P/C  
%SC Discrete system memory group C in byte mode P/C  
%S  
%G  
Discrete system memory in byte mode P  
Discrete global data table in byte mode P/C  
If you use the RUI editor and view the Map Descriptors online it may appear that the driver  
changed the data type but in fact all that it has done is changed the display to a synonym.  
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: [email protected]  
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FS-8704-12_GE-EGD Manual  
Appendix B. Error Messages  
Page 22 of 26  
Multiple protocol drivers may exist on a FieldServer. Each driver may produce its own error  
messages and the FieldServer itself may produce error messages.  
Message  
Action  
EGD:#1 Error. Can’t init UDP.  
EGD:#2 Error. Can’t get a  
socket.  
This is a fatal error. The FieldServer needs to be re-initialized  
or you need technical support from FieldServer Technologies.  
EGD:#3 Error. Protocol does  
not support active polling.  
Change function for  
The rdbc/rdb/rdbx functions are not supported by this protocol.  
The device you wish to poll must be configured to 'produce' its  
data and this driver will 'consume' the data using passive Map  
Descriptors.1  
mapDesc=<%s>  
EGD:#4 Error. Producer ID  
required for mapDesc=<%s>  
EGD:#5 Error. Exchange ID  
required for mapDesc=<%s>  
EGD:#6 FYI. No data type  
specified. Defaulted to <Byte>  
EGD:#7 FYI. Data type not  
recognized. Defaulted to  
<Byte> for mapDesc=<%s>  
EGD:#8 Error. Don't know GE  
Data Type(%d) for  
Each Map Descriptor requires a producerID.1  
Each Map Descriptor requires an exchangeID.1  
This is a warning only. You can eliminate the warning by  
editing the CSV file.1  
An illegal data type has been used.1  
mapDesc=<%s>  
An EGD producer has sent a data packet to the FieldServer  
but the driver cannot find a passive Map Descriptor to use to  
process and store the incoming data. It’s possible that the  
producer has been incorrectly configured and that the packet  
was not intended for the FieldServer. Alternatively, make a  
new Map Descriptor which will handle this data.  
EGD:#9 Error. Incoming data  
from ip=<%s>  
producerID=<%s>  
exchangeID=(%d) is being  
abandoned.  
EGD:#10 Error. Don't know GE  
Data Type (%d) for  
An illegal data type has been used.1  
mapDesc=<%s>  
EGD:#11 FYI. You could have  
used a mapDesc called <egd-  
ii> to expose diagnostic info.  
EGD:#12 Invalid IP. Too many  
characters.  
EGD:#13 Invalid IP <%s>  
EGD:#14 Error. The mapDesc  
called <egd-stats> is too short  
EGD:#15 FYI. You could have  
used a mapDesc called <egd-  
stats> to expose diagnostic  
info.  
This message requires no action, but refer to Appendix B.1 of  
this manual to see whether you will benefit from exposing  
some driver internal diagnostic data.  
IP address is more than 15 characters in length.1  
Insufficient points in the IP address. 1  
Increase the data length parameter for this Map Descriptor  
Make sure the Data Array is long enough too.  
Refer to Appendix B.10 \r \h |Appendix B.1} for more  
information.  
1 Edit the CSV file, download to the FieldServer and restart the FieldServer for the changes to take effect.  
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: [email protected]  
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FS-8704-12_GE-EGD Manual  
Page 23 of 26  
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,  
null_node,  
Protocol  
ge_egd  
Data_Arrays  
Data_Array_Name,  
EGD_DIAG,  
Data_Format,  
UINT32,  
Data_Array_Length  
100  
Map_Descriptors  
Map_Descriptor_Name,  
egd-ii,  
Data_Array_Name,  
EGD_DIAG,  
Node_name  
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  
Contents  
Element  
The first 32 bytes of the most recently received UDP packet received on  
port 0x4746 (The GE EGD port).  
0-31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
PDUTypeVersion  
RequestID  
ProducerID2  
ExchangeID  
TimeStampSec  
TimeStampNanoSec  
Status3  
ConfigSignature  
Reserved  
Source IP Address1  
2 As a UINT32. Not in dot format  
3 Read section 4.4 of GE-Fanuc document GFK-1541 for more information.  
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: [email protected]  
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FS-8704-12_GE-EGD Manual  
Appendix B.2. Driver Stats  
Page 24 of 26  
EGD producers produce data messages for slave 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 the data this driver is interested in 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,  
null_node,  
Protocol  
ge_egd  
Data_Arrays  
Data_Array_Name,  
EGD_STATS,  
Data_Format,  
UINT32,  
Data_Array_Length  
100  
Map_Descriptors  
Map_Descriptor_Name,  
egd-stats,  
Data_Array_Name,  
EGD_STATS,  
Node_name  
null_node  
When the driver sees this Map Descriptor it uses 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.  
Array Element  
Contents  
0
1
2
3
4
5
Messages Produced  
Bytes Produces  
Messages Received  
Bytes Received  
Messages Consumed  
Messages Ignored  
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: [email protected]  
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FS-8704-12_GE-EGD Manual  
Page 25 of 26  
Appendix C. Troubleshooting Tips  
Appendix C.1. ProducerID with FieldServer device as Producer  
During testing it has been observed that a 90-30 PLC required that the ge_ProducerID  
parameter was set to the same value as the IP Address of the FieldServer.  
Appendix C.2. Produced Time Stamp  
The GE-EGD (Ethernet Global Data) driver always set the timestamp of produced data to  
the time of the Field Server Device. The nanoseconds portion of the time stamp is always  
set to zero.  
Appendix C.3. Status Values  
The status of the EGD Exchange may be monitored in the GE PLC. The status value is well  
documented in GFK-1541 Chapter 4.4. During testing, using the Field Server device as a  
producer and the GE Device as a consumer the following status values were observed.  
0 -> The exchange had never been consumed  
1 -> Normal  
4 -> Length of produced and consumed exchange not equal - Different messages with the  
same exchange ID.  
6. -> Timeout.  
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: [email protected]  
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FS-8704-12_GE-EGD Manual  
Page 26 of 26  
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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: [email protected]  
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