Connect to C-More with Modbus TCP

This procedure will walk through setting up the ModbusTCP mapping with the XEM CPU as a server and a C-More EA9 HMI as the client.

Some programming is required for transferring STRING values between the XEM CPU and C-More HMI.

Supported Data Types

XG5000 Data Type	C-More Data Type Equivalent
BOOL	Discrete
INT	Signed int 16
UINT	Unsigned int 16
DINT	Signed int 32
UDINT	Unsigned int 32
REAL	Floating PT 32
WORD	Unsigned int 16
DWORD	Unsigned int 32
STRING	Ascii String

 

Procedures

Follow the referenced procedures below to connect to C-More via Modbus TCP.

• Set up the Modbus Server Mode on XEM CPU

• Modbus Settings - ADC Example Mapping

• STRING data over Modbus

• WORD and DWORD over Modbus

You can also download an example program here:

Example Applications

 

 

 

 

 

 

 

LP203