STEP 7 Additional Software

Error Codes in C++ using S7ProSim

Thread Starter: maxidoodle   Started: 7/2/2012 7:00 PM   Replies: 0

  7/2/2012, 7:00 PM

maxidoodle Joined 7/2/2012 Last visit: 7/6/2012 Posts: 1 Rating:  (0)

(0)  I am attempting to write a piece of software in C++ that interacts with S7PLCSIM using the provided S7ProSim COM Object. The method ReadInputPoint executes properly and is working fine, however, I cannot seem to write to the input block using WriteInputPoint. I am trying to diagnose the problem, but the only HRESULT returned by the function is S_FALSE (0x00000001). The API claims that "event handling is not necessary in C++", however it also claims that the error codes are returned in the ConnectionError event and not by the called function. How am I supposed to get the error code returned by the ConnectionError event? Thanks, -Max

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