Vicks EDG-4508+, EDG-4516+ - 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;