基于C++的发那科数控车床程序源码.zip

This directory contains some examples in C showing how to use the library. async.c: This example shows how to set up and fire many tag reads simultaneously, and then wait for them to complete. Cross platform. data_dumper.c: A simple data logger that outputs formatted text output with one row per sample. POSIX only. multithread.c: A simple example of multithreading using pthreads and the libplctag locking API calls. POSIX only. Provide an argument giving the number of threads to use. As you increase the number of threads, the average latency will increase. Warning: you can really hammer the PLC with just a few threads. Keep it under 30 for sanity. multithread_cached_read.c: An example of cached read settings. This is basically the same as the above example, but the tag is defined to cache reads. By looking at the packet dumps, you can see just how much bandwidth this saves if your data can be a little stale. POSIX only. multithread_plc5.c: As for multithread.c, but reading from a PLC5. They are slow. Do not use too many threads. multithread_plc5_dhp.c: A version of the above, but is configured to use a tag in a PLC5 that is accessed via a DHRIO module in a ControlLogix chassis. If you thought the above was slow... This gives an example of how to configure this kind of pass through. It is used for stress testing. POSIX only. plc5.c: A simple example of direct PLC 5 access. The PLC 5 must have Ethernet and have updated firmware such that it can use the limited EIP/CIP protocol needed. Cross platform. simple.c: This is a basic tag read example. It has a hardcoded tag name name and path and type. You need to change them to match your system. Cross platform simple.cpp: As above, but in C++. simple_dual.c: Connects to two different kinds of PLCs simultaneously. Shows how the API is identical for each. Cross platform. slc500.c: Shows connection to a SLC500. Cross platform. stress_test.c: Probably not the best code. Written to stress test the library by heavily hitting a LGX PLC with multiple threads while closing and openning tags constantly. Do not code your apps like this! POSIX only. string.c: This example shows how to read an array of STRINGs. Cross platform. toggle_bool.c: This example reads a boolean tag, inverts it, and writes back the new value. Cross platform. write_string.c: This example shows how to read and write an array of strings. Cross platform. tag_rw.c: This is a more complicated example. tag_rw is a command line tool you can use to read and write arbitrary tags in any supported PLC type and network. This example shows setting and getting all of the core data types supported by the library. Cross platform. These examples have not been tested as much on Windows. They will probably work with very few changes.