public static void main(String[] args) {
SerialConnection con = null;
ModbusSerialTransaction trans = null;
ReadInputRegistersRequest req = null;
ReadInputRegistersResponse res = null;
String portname = null;
int unitid = 0;
int ref = 0;
int count = 0;
int repeat = 1;
try {
//1. Setup the parameters
if (args.length < 4) {
printUsage();
System.exit(1);
} else {
try {
portname = args[0];
unitid = Integer.parseInt(args[1]);
ref = Integer.parseInt(args[2]);
count = Integer.parseInt(args[3]);
if (args.length == 5) {
repeat = Integer.parseInt(args[4]);
}
} catch (Exception ex) {
ex.printStackTrace();
printUsage();
System.exit(1);
}
}
//2. Set slave identifier for master response parsing
ModbusCoupler.getReference().setUnitID(unitid);
System.out.println("net.wimpi.modbus.debug set to: " +
System.getProperty("net.wimpi.modbus.debug"));
//3. Setup serial parameters
SerialParameters params = new SerialParameters();
params.setPortName(portname);
params.setBaudRate(9600);
params.setDatabits(8);
params.setParity("None");
params.setStopbits(1);
params.setEncoding("ascii");
params.setEcho(false);
if (Modbus.debug) System.out.println("Encoding [" + params.getEncoding() + "]");
//4. Open the connection
con = new SerialConnection(params);
con.open();
//5. Prepare a request
req = new ReadInputRegistersRequest(ref, count);
req.setUnitID(unitid);
req.setHeadless();
if (Modbus.debug) System.out.println("Request: " + req.getHexMessage());
//6. Prepare the transaction
trans = new ModbusSerialTransaction(con);
trans.setRequest(req);