byte[] timeOffBytes = toBytes(timeOff, 4);
commandFrame.setMarker(13);
commandFrame.writeByte(timeOffBytes[0]);
commandFrame.setMarker(14);
commandFrame.writeByte(timeOffBytes[1]);
commandFrame.setMarker(15);
commandFrame.writeByte(timeOffBytes[2]);
commandFrame.setMarker(16);
commandFrame.writeByte(timeOffBytes[3]);
commandFrame.writeByte((byte) 0x00);