50b026d7a5
Read responses from the PLS using classes for TPKT and COPT. This makes the communication more robust. It will now handle empty COTP packets that SoftPLS and WinAC based PLCs send out. I use RFC names for functions and classes. Change logic to use COTP and S7Comm reponse codes instead of relying on packet sizes. Read Max PDU size from connection setup. Ref #21 Change logic to use MaxPDUSize when reading istead of hardcoded limit. I tried using MaxPDUSize when writing data but this failed when packet size is over 256 on snap7. So i decided to drop changes to write size. I have done some tests against WinAC cpu and it seems to handle bigger pdu's when writing if negotiated in the connection setup. This might just be a SNAP7 bug. Fix MaxPDUSize for readbytes Remove debug line Simplify byte copy. Remove unessesarry buffer
s7netplus
A .NET Library for Siemens S7 Connectivity
Overview
S7.Net Plus is a continuation of the work done on the S7.Net project by Juergen1969. I found the library simple and effective, but the project has languished unchanged since late 2009.
I was doing some automation work already and saw a few places where the code base could be improved. Because Juergen did not respond to my request for committing code, I decided to pick up where he left off here on GitHub.
Documentation
Check the Wiki and feel free to edit it: https://github.com/killnine/s7netplus/wiki
S7.Net Plus has a User Manual, check it out.
Supported PLC
- Compatible S7 PLC (S7-200, S7-300, S7-400, S7-1200, S7-1500)
Target framework
- .NET Framework 3.5 or higher
- Universal Windows Application (.Net Core) - see S7.UniversalWindowsApp.sln
Compile
You need at least Visual Studio 2015 (you can download the Community Edition for free).
Nuget
PM> Install-Package S7netplus
Latest build (Appveyor)
https://ci.appveyor.com/project/mesta1/s7netplus
Running the tests
Unit tests use Snap7 server, so port 102 must be not in use. If you have Siemens Step7 installed, the service s7oiehsx64 is stopped when running unit tests. You have to restart the service manually if you need it.