public void readData(DataInput din) throws IOException {
setByteCount(din.readUnsignedByte());
InputRegister[] registers = new InputRegister[getWordCount()];
ProcessImageFactory pimf = ModbusCoupler.getReference().getProcessImageFactory();
for (int k = 0; k < getWordCount(); k++) {
registers[k] = pimf.createInputRegister(din.readByte(), din.readByte());
}
m_Registers = registers;
// update data length
setDataLength(getByteCount() + 1);
} // readData
public void readData(DataInput din) throws IOException {
m_Reference = din.readShort();
// read lengths
int wc = din.readUnsignedShort();
int bc = din.readUnsignedByte();
// read values
if (m_NonWordDataHandler == null) {
m_Registers = new Register[wc];
ProcessImageFactory pimf = ModbusCoupler.getReference().getProcessImageFactory();
for (int i = 0; i < wc; i++) {
m_Registers[i] = pimf.createRegister(din.readByte(), din.readByte());
}
} else {
m_NonWordDataHandler.readData(din, m_Reference, wc);
}
} // readData
public ModbusResponse createResponse() {
WriteMultipleRegistersResponse response = null;
if (m_NonWordDataHandler == null) {
Register[] regs = null;
// 1. get process image
ProcessImage procimg = ModbusCoupler.getReference().getProcessImage();
// 2. get registers
try {
// TODO: realize a setRegisterRange()?
regs = procimg.getRegisterRange(this.getReference(), this.getWordCount());
// 3. set Register values
for (int i = 0; i < regs.length; i++) {
regs[i].setValue(this.getRegister(i).toBytes());
}
} catch (IllegalAddressException iaex) {
return createExceptionResponse(Modbus.ILLEGAL_ADDRESS_EXCEPTION);
}
response = new WriteMultipleRegistersResponse(this.getReference(), regs.length);
} else {
int result = m_NonWordDataHandler.commitUpdate();
if (result > 0) {
return createExceptionResponse(result);
}
response =
new WriteMultipleRegistersResponse(
this.getReference(), m_NonWordDataHandler.getWordCount());
}
// transfer header data
if (!isHeadless()) {
response.setTransactionID(this.getTransactionID());
response.setProtocolID(this.getProtocolID());
} else {
response.setHeadless();
}
response.setUnitID(this.getUnitID());
response.setFunctionCode(this.getFunctionCode());
return response;
} // createResponse
public ModbusResponse createResponse() {
ReadInputRegistersResponse response = null;
InputRegister[] inpregs = null;
// 1. get process image
ProcessImage procimg = ModbusCoupler.getReference().getProcessImage();
// 2. get input registers range
try {
inpregs = procimg.getInputRegisterRange(this.getReference(), this.getWordCount());
} catch (IllegalAddressException iaex) {
return createExceptionResponse(Modbus.ILLEGAL_ADDRESS_EXCEPTION);
}
response = new ReadInputRegistersResponse(inpregs);
// transfer header data
if (!isHeadless()) {
response.setTransactionID(this.getTransactionID());
response.setProtocolID(this.getProtocolID());
} else {
response.setHeadless();
}
response.setUnitID(this.getUnitID());
response.setFunctionCode(this.getFunctionCode());
return response;
} // createResponse