glcj commented on code in PR #1833:
URL: https://github.com/apache/plc4x/pull/1833#discussion_r1865937870
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plc4j/drivers/modbus/src/test/java/org/apache/plc4x/java/modbus/base/optimizer/LittleEndianByteSwapTest.java:
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@@ -248,7 +249,8 @@ public void testLittleEndianByteSwap() throws Exception {
Map<PlcReadRequest, BaseOptimizer.SubResponse<PlcReadResponse>>
readResponses = new HashMap<>();
readResponses.put(firstRequest, new BaseOptimizer.SubResponse<>(
new DefaultPlcReadResponse(firstRequest, Map.of(
- "coils0", new DefaultPlcResponseItem<>(PlcResponseCode.OK, new
PlcRawByteArray(Hex.decodeHex("3060480c00c084000000000000000000000000000000")))))));
+ //"coils0", new DefaultPlcResponseItem<>(PlcResponseCode.OK,
new
PlcRawByteArray(Hex.decodeHex("3060480c00c084000000000000000000000000000000")))))));
+ "coils0", new DefaultPlcResponseItem<>(PlcResponseCode.OK, new
PlcRawByteArray(Hex.decodeHex("10404004004004000000000000000000000000000044")))))));
Review Comment:
I used the bit pattern from the optimizer test, 175 coils, on two different
devices and they returned the same byte sequence and according to the Modbus
standard, so I used it as a reference.
I want to validate with other devices, but bit (coil) requests are always
answered in BIG_ENDIAN, which is consistent with the standard, but I need to
reconfirm this.
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