User Guide

FS-8700-20 Profibus DP Driver Manual Page 9 of 22
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com
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4.5. Client Side Map Descriptors
Map Descriptors control when and how data is transferred to or from the Profibus slaves.
Column Title Function Legal Values
Map_Descriptor_Name Name of this Map Descriptor Up to 32 alphanumeric characters
Data_Array_Name
Name of Data Array where data is to be stored
in the FieldServer
One of the Data Array names from “Data Array”
section above
Data_Array_Offset Starting location in Data Array 0 to maximum specified in “Data Array” section above
Function Function of Client Map Descriptor RDBC, WRBC
Node_Name Name of Node to fetch data or write data to
One of the node names specified in “Client Side
Nodes” above
Data_Type Data type FLOAT, WORD, BYTE, BIT
DP_Buffer Specify buffer in the DP card being accessed. Input, Output
Address
Address in DP_Buffer being accessed,
expressed in byte offset
0-243
Note: When using Data_Type BIT, the address is in
bit e.g. from 0 - 1951
Length
Number of points in DP_Buffer being accessed,
expressed in points defined by Data_Type
1- 1952, depending on Data_Type
e.g. when Data Type is WORD and length is 10, it
means that 10*2 = 20 bytes are used in the buffer
Example
// Client Side Map Descriptors
Map_Descriptors
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, Node_Name, DP_Type, DP_Buffer, Address, Length
FLOAT_IN_01, DA_FI_01, 0, WRBC, PDP_01, FLOAT, Output, 0000, 20
INT_IN_01, DA_AI_01, 0, WRBC, PDP_01, WORD, Output, 0080, 20
BYTE_IN_01, DA_BI_01, 0, WRBC, PDP_01, BYTE, Output, 0120, 20
BIT_IN_0,1 DA_DI_01, 0, WRBC, PDP_01, BIT, Output, 0140, 32
FLOAT_OUT_01, DA_FO_01, 0, RDBC, PDP_01, FLOAT, Input, 0000, 20
INT_OUT_01, DA_AO_01, 0, RDBC, PDP_01, WORD, Input, 0080, 20
BYTE_IN_01, DA_BO_01, 0, RDBC, PDP_01, BYTE, Input, 0120, 20
BIT_IN_01, DA_DO_01, 0, RDBC, PDP_01, BIT, Input, 0140, 32