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fix getFrameStart for ExceptionResponse #1627

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merged 2 commits into from
Jun 23, 2023
Merged

fix getFrameStart for ExceptionResponse #1627

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9473daf
fix getFrameStart if response is ExceptionResponse
Jun 23, 2023
2ad09ec
reformat with black
Jun 23, 2023
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5 changes: 4 additions & 1 deletion pymodbus/framer/rtu_framer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -200,7 +200,10 @@ def getFrameStart(self, slaves, broadcast, skip_cur_frame):
for i in range(start, buf_len - 3): # <slave id><function code><crc 2 bytes>
if not broadcast and self._buffer[i] not in slaves:
continue
if self._buffer[i + 1] not in self.function_codes:
if (
self._buffer[i + 1] not in self.function_codes
and (self._buffer[i + 1] - 0x80) not in self.function_codes
):
continue
if i:
self._buffer = self._buffer[i:] # remove preceding trash.
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