FieldServer FS-8700-08 - Manual (Page 7)

FS-8700-01 Modbus RTU/ASCIIFS-8700-01_Modbus_RTU.doc Driver Manual Page 7 of 21
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5.2 Client Side Node Parameters
Section Title
Nodes
Column Title
Function Legal Values
Node_Name Provide name for Node
Up to 32 alphanumeric
characters
Node_ID Modbus station address of physical Server Node 1-255
Protocol Specify protocol used
Modbus RTU
Modbus_RTU
Modbus ASCII
MB_ASCII
Port Specify which port the device is connected to the FieldServer P1-P8, R1-R2 3
Address_Type
5
Specify Register Mapping Model
ADU,PDU, -,
Modicon_5digit
Write_Fnc*
Set to Multiple if Remote Server Node only supports Write Multiple
function code 15 & 16
Multiple, -,
Write_Length*
Set to Map Descriptor Length if write-thru operation should write
all registers as specified by Map Descriptor length.
By default write-thru writes a single register.
If Write_Length also specified on Map Descriptor, Map Descriptor’s
parameter will be used.
Map Descriptor Length, -,
1,
Example:
// Client Side Nodes
// For devices where 65536 addresses are available in each memory area.
Nodes
Node_Name , Node_ID , Protocol , Port ,Address_Type
Modbus device 1 , 1 , Modbus _RTU
6
, P1 ,ADU
Modbus device 2 , 2 , Modbus_RTU , P1 ,PDU
// For devices where only 9999 registers are available in each memory area.
Nodes
Node_Name , Node_ID , Protocol , Port
Modbus device 3 , 3 , Modbus_RTU , P1
5 Optional for Modicon 5 digit devices
6 Change protocol to MB_ASCII to use Modbus ASCII protocol