FieldServer FS-8700-08 - Manual (Page 8)

FS-8700-01 Modbus RTU/ASCIIFS-8700-01_Modbus_RTU.doc Driver Manual Page 8 of 21
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5.3 Client Side Map Descriptor Parameters
5.3.1 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 Section 4
Data_Array_Offset Starting location in Data Array
0 to (Data_Array_Length -1) as specified in Section
4
Function
Function of Client Map
Descriptor.
Wrbc, Wrbx, Rdbc, Arcs. Refer to Error! Reference
source not found. for more information.
5.3.2 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
Data_Type 7
Specify memory area. Refer to Appendix
A.1.2 on how to transfer 32 Bit values
using Modbus registers.
Address_Type = ADU
Coil, Discrete_Input, Input_Register,
Holding_Register,
Single_Coil,
Single_Register, Slave_Id
Address_Type = PDU
FC01, FC02, FC03, FC04,
FC05, FC06, FC15, FC16
Address_Type = Modicon_5digit
- (Dash), Single_Register, Single_Coil
All Address_Type
Float_Reg,
32-Bit_Reg, Input_Float,
Input_Reg_32Bit
Address Starting address of read block
Address_Type = ADU
1-65536
Address_Type = PDU
0-65535
Address_Type = Modicon_5digit
40001, 30001, etc
Length Length of Map Descriptor.
1-125 (For Analog polls),
1-800 (For Binary polls).
Write_Length*
Set to Map Descriptor Length if write-thru
operation should write all registers as
specified by length parameter.
By default write-thru writes a single
register.
Map Descriptor Length, 1,
Data_Array_Low_Scale* Scaling zero in Data Array Any signed 32 bit integer in the range:
7 Optional only for Modicon_5digit addressing, and only if Single writes do not need to be forced