chrisdutz commented on code in PR #1833:
URL: https://github.com/apache/plc4x/pull/1833#discussion_r1866067391


##########
plc4j/drivers/modbus/src/test/java/org/apache/plc4x/java/modbus/ManualModbusTCPDriverTest.java:
##########
@@ -69,22 +92,22 @@ public ManualModbusTCPDriverTest(String connectionString) {
     }
 
     public static void main(String[] args) throws Exception {
-        ManualModbusTCPDriverTest test = new 
ManualModbusTCPDriverTest("modbus-tcp://192.168.23.30");
+        ManualModbusTCPDriverTest test = new 
ManualModbusTCPDriverTest("modbus-tcp://10.10.1.200:10502?default-payload-byte-order=LITTLE_ENDIAN_BYTE_SWAP");
         test.addTestCase("holding-register:1:BOOL", new PlcBOOL(true)); // 0001
         test.addTestCase("holding-register:2:BYTE", new PlcBYTE(42)); // 2A
         //test.addTestCase("holding-register:3:WORD", new PlcWORD(42424)); // 
A5B8
-        test.addTestCase("holding-register:4:DWORD", new 
PlcDWORD(4242442424L)); // FCDE 88B8
+        test.addTestCase("holding-register:4:DWORD", new 
PlcDWORD(424244242L)); // 1949 7412

Review Comment:
   Yeah ... ok ... at least that's a reason I would accept ... possibly 
entering it as a signed integer would work? so probably some large negative 
number? (-52524872) then we wouldn't be adjusting our tests to the bugs of a 
tool we use and would actually also test the boundaries of signed and unsigned 
integers.



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