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Modbus TCP/IP Driver Manual
Page 8 of 23
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
Station Address of Remote Server Node.
0 – 255
Protocol
Specify protocol used.
Modbus/TCP
Adapter
Specify which adapter this protocol uses.
N1-N2, WLAN6
IP_address
IP address of client PLC.
Valid IP address (for
example - 192.168.1.13)
Address_Type7
Specify Register Mapping Model.
ADU, PDU,
Modicon_5digit
Modbus_TCP_
IP_Port*
Select remote Internet Protocol Port.
1-65534, 502
Write_Fnc*
Set to Multiple if Remote Server Node only supports Write
Multiple function code 15 & 16.
Multiple, -
Write_Length*
Set to MD_Length if write-thru operation should write all
registers as specified by MD_Length.
By default, write-thru writes a single register.
If Write_Length also specified on Map Descriptor, Map
Descriptor’s parameter will be used.
MD_Length, -, 1
Example
// Client Side Nodes for new devices where 65536 registers are available in each memory area
Nodes
Node_Name
, Node_ID
, Protocol
, Adapter
, Address_Type
Modbus device 1
, 1
, Modbus/TCP
, N1
, ADU
// Client Side Nodes for devices where only 9999 registers are available in each memory area
Nodes
Node_Name
, Node_ID
, Protocol
, Adapter
, IP_Address
Modbus device 3
, 3
, Modbus/TCP
, N1
, 192.168.1.172
5.3 Client Side Map Descriptor Parameters
5.3.1 FieldServer Specific 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.
RDBC, WRBC, WRBX, Passive
6 Not all ports shown are necessarily supported by the hardware. Consult the appropriate Instruction manual for details of the ports
available on specific hardware.
7 Optional for Modicon 5 digit devices.
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