FieldServer A Sierra Monitor Company X30 - Manual (Page 7)

FS-8700-122 Profibus DP Master Manual Page 7 of 13
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com
Tel: (408) 262 2299 Fax: (408) 262 2269 Toll Free: (888) 509 1970 email: [email protected]
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 (Data_Array_Length-1) as specified in
“Data_Array” section
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
3
1 - 244 ( BYTE )
1 - 122 ( WORD )
1 - 1952 ( BOOL )
1 - 61 ( FLOAT )
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
3 A maximum combined total length of 1536 bytes are permitted for all Map Descriptors accessing Slave devices.