This is a library implementing Allen Bradley's PCCC protocol, allowing communication to their family of programmable logic controllers. Communication is accomplished over a DF1 link via the included df1d daemon.
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File released: /libpccc/1.1/libpccc-1.1.tar.gz
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libpccc 1.1 file released: libpccc-1.1.tar.gz
df1d - Changed acknowledge timeout to be a configurable parameter via the configuration file. - Added support for embedded responses. - Fixed UTF-8 conversion while parsing configuration file. - Fixed memory leaks during XML configuration parsing. lib - Fixed some memory leaks. - Additional command testing. - Fixed various return values for connection management functions. - Added support for string elements. - Added support for status elements. - Added checks for calling functions with NULL connection pointers. - Created more descriptive function return values. - Fixed a slight ACK delay in rare cases where a reply is received before the ACK for the originating command. - More correct reporting of error codes received in replies. - Modified the transaction number initialization so multiple processes sending the same command in quick succession get different tranaction number values. - Added SetTimeout command. - Added SetNAKs command. - Added SetENQs command. - Added ReadModifyWrite command. - Changed various function arguments and structure members to size_t where appropriate.
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File released: /libpccc/1.0/libpccc-1.0.tar.gz
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libpccc 1.0 file released: libpccc-1.0.tar.gz
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