User Guide

FS-8700-20 Profibus DP Driver Manual Page 15 of 22
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com
Tel: [phone] Fax: [phone] Toll_Free: 888-509-1970 email: [e-mail]
5.5. Server Side Map Descriptors
Map Descriptors control when and how data is transferred to or from the card buffers for an external Profibus Master to access.
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 Server Map Descriptor RDBC, WRBC
Node_Name Name of DP Server Node
The node name specified in “Server 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 eg. 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
eg. when Data Type is WORD and length is 10, it
means that 10*2 = 20 bytes are used in the buffer
Example
// Server 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, RDBC, PDP_01, FLOAT, Output, 0000, 20
INT_IN_01, DA_AI_01, 0, RDBC, PDP_01, WORD, Output, 0080, 20
BYTE_IN_01, DA_BI_01, 0, RDBC, PDP_01, BYTE, Output, 0120, 20
BIT_IN_0,1 DA_DI_01, 0, RDBC, PDP_01, BIT, Output, 0140, 32
FLOAT_OUT_01, DA_FO_01, 0, WRBC, PDP_01, FLOAT, Input, 0000, 20
INT_OUT_01, DA_AO_01, 0, WRBC, PDP_01, WORD, Input, 0080, 20
BYTE_IN_01, DA_BO_01, 0, WRBC, PDP_01, BYTE, Input, 0120, 20
BIT_IN_01, DA_DO_01, 0, WRBC, PDP_01, BIT, Input, 0140, 32