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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

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

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

Map Descriptor Length, 1,

Data_Array_Low_Scale*

Scaling zero in Data Array

Any signed 32 bit integer in the range:

Optional only for Modicon_5digit addressing, and only if Single writes do not need to be forced

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 20 21

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