modbus.h

富士通单片机MB90F387上实现MODBUS

extern uchar   Slave_addr;//地址范围1～31，从设备地址默认1
extern uchar   Modbus_mode; //0：RTU模式；1：ASCII模式
extern uchar   Commformat;  //0: 8 N 1；
extern uchar   ModbusBPS;   //默认3(9600bps)

extern void    init_uart1(uchar bps,uchar Dataform);

extern volatile uint soft_timer;

extern uchar cmd01_ReadCoilStatus(uchar DeviceID, uint start_address, uint lenth);
extern uchar cmd02_ReadInStatus  (uchar DeviceID, uint start_address, uint lenth);
extern uchar cmd03_ReadHldreg    (uchar DeviceID, uint start_address, uint lenth);
extern uchar cmd04_ReadAnlogIn   (uchar DeviceID, uint start_address, uint lenth);
extern uchar cmd05_SetCoil       (uchar DeviceID, uint start_address, uint value);
extern uchar cmd06_SetHldreg     (uchar DeviceID, uint start_address, uint value);
extern uchar cmd15_setcoils      (uchar DeviceID, uint Startbit_Add, uint Bit2Write, uchar ByteValue, uchar *Values);
extern uchar cmd16_SetMultiHldreg(uchar DeviceID, uint start_address, uint WNum, uchar BNum, uint *values);