As per cwalter-at#30 / https://github.com/cwalter-at/freemodbus/pull/…

…4/files
VolutionGroup · Mar 13, 2023 · 924db33 · 924db33
1 parent f167010
commit 924db33
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/modbus/functions/mbfuncholding.c b/modbus/functions/mbfuncholding.c
@@ -182,7 +182,7 @@ eMBFuncReadHoldingRegister( UCHAR * pucFrame, USHORT * usLen )
         usRegAddress++;
 
         usRegCount = ( USHORT )( pucFrame[MB_PDU_FUNC_READ_REGCNT_OFF] << 8 );
-        usRegCount = ( USHORT )( pucFrame[MB_PDU_FUNC_READ_REGCNT_OFF + 1] );
+        usRegCount |= ( USHORT )( pucFrame[MB_PDU_FUNC_READ_REGCNT_OFF + 1] );
 
         /* Check if the number of registers to read is valid. If not
          * return Modbus illegal data value exception.