params.setEcho(true);
if (Modbus.debug) System.out.println("Encoding [" + params.getEncoding() + "]");
//3. Create the master facade
msm = new ModbusSerialMaster(params);
msm.connect();
do {
if (msm.writeCoil(slaveId, 4, true) == true) {
System.out.println("Set output 5 to true");
} else {