Advantech EDG-4516+ Manuel d'utilisateur télécharger pdf (Page 104)

EDG-4508+/4516+ User Manual 92

mbtcp.h

File name of mbtcp means Modbus TCP; we provide the easier definition

of necessary parameter. For example,

MODBUSTCPMAXMSGLENGTH

MODBUS TCP Max Message Length

MODBUSTCPMSGHDRLENGTH

MODBUS TCP Message Header Length

* The programming I/O sample programs are for programmer's reference

to make the event I/O program for their own environment. Program-

mers can open the file as a template file to make a new project of event.

#define MODBUSTCPMAXMSGLENGTH 288

#define MODBUSTCPMSGHDRLENGTH 6

typedef struct __MODBUSTCPMSG {

unsigned short wTransactionId;

unsigned short wProtocolId;

unsigned char byteMsgLenHigh;

unsigned char byteMsgLenLow;

unsigned char Data[2];

} TMODBUSTCPMSG;

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Advantech EDG-4516+ Manuel d'utilisateur Page 104