EtherNet/IP Driver Manual
Page 11 of 42
5.3.3 Driver Related Map Descriptor Param eters
– Data Table Read/W rite
Column Title
Function
Legal Values
EIP_Service
The action to be performed.
Data_Table_Read,
Data_Table_Write
EIP_Con_Typ
The type of data transfer required.
Explicit, UnConnected
EIP_Path
*
Used to stipulate the path to the CPU in
certain PLC’s. Paths vary and are dependent
on the structure of the network.
Any space delimited numerical
value. Refer to
vendor’s device
documentation. (
Appendix
A.3
)
EIP_Tag_Name
Tag name expressed in PLC program. The
data type of this parameter is used to set the
data format of the Data Array if the
EIP_DATA_TYPE parameter is not specified.
Maximum length 48
characters.
EIP_Data_Type*
This parameter can be used to force the data
type of the tag to match the data type used in
the remote device. If this parameter is not
specified the Data Type of the Data Array will
be used. Refer to
Appendix A.4
for more
information. Data Types can be specified in
either
FieldServer
or
Rockwell
Data
Type. Refer to
Appendix C.4
for more
information.
Value Alias (as used in PLC)
Float REAL
Uint32 DINT
Uint16 INT
BYTE SINT
BIT BOOL &
BOOLEAN
Length
Number of data elements to be mapped. If the
number of data elements exceeds the Map
Descriptor length, the list of data elements will
be truncated and an error message will be
printed once per Map Descriptor. See
Appendix D
for further information.
0 to (Data_Array_Length -1) as
specified in
Section
4
.
EIP_Structure_Handle*
This parameter is required to read/write
structures. The driver supports read/write
structures having members of same type, i.e.
all members are of type Byte, UINT16,
UINT32 or Float etc.
When this parameter is defined, the number
of structure members must be specified as the
length of the Map Descriptor. Refer to
Appendix A.7
for more information.
Any 16bit Integer number (e.g.
59592),
0
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