EtherNet/IP Driver Manual
Page 16 of 42
6.3.3 Server Specific 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
NOTE: Separate Map
Descriptors need to be
configured for each
service.
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*
If set, the data will be stored in the specified
format which may be different to the format of the
tag being polled. If the parameter is not set, the
data type of the Data Array will be used. This is
only applicable to Data Table Read when
FieldServer is the Server. Refer to
Appendix
A.4
for further information.
Float, Uint16, Uint32, Bit,
Byte, 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. Refer to
Appendix D
for further information.
0 to (Data_Array_Length
-1) as specified in
Section
4
EIP_Structure_Handle*
This parameter is required only for read
structures
i.e.
where
EIP_Service
is
Data_Table_Read. The driver supports read
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.
Any 16bit Integer number
e.g. 59592,
0
