FieldServer FS-8704-14 - Manual (Page 14)

FS-8704-14 EtherNet/IP Manual Page 14 of 31
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6.3.3 Server Specific Map Descriptor Parameters – Data Table Read/Write.
Column Title Function Legal Values
EIP_Service The action to be performed.
Data_Table_Read,
Data_Table_Write
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
6.3.4 Driver Related Map Descriptor Parameter s – PCCC
Column Title Function Legal Values
EIP_Con_Typ The type of data transfer required Explicit
EIP_Service Action to be performed
EXEC_PCCC (Encapsulation
using Allen Bradley PCCC)
File_Type Allen Bradley file type
N Integer
F Float
O Output
B Boolean
I Input
S Status
File_Number Allen Bradley file number Any valid numerical value
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.
For any given Map
Descriptor there can be 61
Floats, 122 Integers or 244
Bytes. .
Address Address in the file
Any valid numerical value
between 0 to 255