User Guide

FS-8700-122 X30 Profibus DP Master Manual Page 8 of 16
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com
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4.5. Client Side Map Descriptors
4.5.1. FieldServer Related Map Descriptor Parameters
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
4.5.2. Driver Related Map Descriptor Parameters
Column Title Function Legal Values
Node_Name
Name of Node to fetch
data from
One of the node names
specified in “Client Node
Descriptor” above
Profibus_Data_Type Arrangement of buffer data
BYTE, WORD, BOOL,
FLOAT
Address
Starting address of buffer
in bytes
0 - 243
Length Length of Map Descriptor
1 - 244 ( BYTE )
1 - 122 ( WORD )
1 - 1952 ( BOOL )
1 - 61 ( FLOAT )
Important Note:
A maximum combined total length of 1536 bytes are permitted for all Map Descriptors
accessing Slave devices.
4.5.3. Timing Parameters
Column Title Function
Legal
Values
Scan_Interval
Rate at which data is transferred from FieldServer data
arrays to Profibus Master buffers.
≥0.001s