moacon:rtu_readcoils:index
RTU_readCoils
short RTU_readCoils(u8 comCh, u8 slaveAdr, u8* result, u16 targetAdr, u8 numOfCoils)
comCh: The RS-232 channel to use |
slaveAdr: The Modbus slave address of the device to read from |
result: Buffer to store coil (bit) data to |
targetAdr: The address of the data to read |
numOfCoils: Number of coils (bits) to read |
returns the status of this function call (-1=Success, 0=Timeout, 1=Data Error) |
Reads numOfCoils bits from slave device slaveAdr, at address targetAdr, on RS-232 channel comCh and
stores the data in result. Returns a number indicating whether or not the function call was successful.
u8 coilBuffer[100]; res = RTU_readCoils(0,1,coilBuffer,4,12);
moacon/rtu_readcoils/index.txt · Last modified: 2019/05/28 11:39 by COMFILE Technology