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FS-8700-01_Modbus_RTU_(T28700-01) Driver Manual Page 9 of 21
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: support@FieldServer.com
4.4. Client Side Map Descriptors
4.4.1. 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, WRBX
4.4.2. 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
Address_Type = ADU
Coil, Discrete_Input, Input_Register,
Holding_Register, Single_Coil,
Single_Register
Address_Type = PDU
FC01, FC02, FC03, FC04,
FC05, FC06, FC15, FC16
Address_Type = Modicon_5digit
Data_Type
5
Specify memory
area
- (Dash), Single_Register, Single_Coil
Address_Type = ADU
1-65536
Address_Type = PDU
0-65535
Address_Type = Modicon_5digit
Address
Starting address of
read block
40001, 30001, etc
Length
Length of Map
Descriptor
1-125 (For Analog polls),
1-800 (For Binary polls).
Data_Array_Low_Scale*
Scaling zero in
Data Array
Any signed 32 bit integer in the range:
-2,147,483,648 to 2,147,483,647. 0
Data_Array_High_Scale*
Scaling max in Data
Array
Any signed 32 bit integer in the range:
-2,147,483,648 to 2,147,483,647. 100
Node_Low_Scale*
Scaling zero in
Connected Node
Any signed 32 bit integer in the range:
-2,147,483,648 to 2,147,483,647. 0
Node_High_Scale*
Scaling max in
Connected Node
Any signed 32 bit integer in the range:
-2,147,483,648 to 2,147,483,647. 100
4.4.3. Timing Parameters
Column Title Function Legal Values
Scan_Interval* Rate at which data is polled
0-32000, 1
5
Optional only for Modicon_5digit addressing, and only if Single writes do not need to be forced