co♻e: unittest framework for CODESYS

Find a low weight solution in CODESYS to exchange the following struct with something more "vanilla";

Each Beckhoff PLC contains an instance of type 'PlcAppSystemInfo' with the name '_AppInfo'.

The corresponding namespace is 'TwinCAT_SystemInfoVarList'. This must be specified for use in a library, for example.

TYPE PlcAppSystemInfo
STRUCT
     ObjId              : OTCID;
     TaskCnt            : UDINT;
     OnlineChangeCnt    : UDINT;
     Flags              : DWORD;
     AdsPort            : UINT;
     BootDataLoaded     : BOOL;
     OldBootData        : BOOL;
     AppTimestamp       : DT;
     KeepOutputsOnBP    : BOOL;
     ShutdownInProgress : BOOL;
     LicensesPending    : BOOL;
     BSODOccured        : BOOL;
     TComSrvPtr         : ITComObjectServer;
     AppName            : STRING(63);
     ProjectName        : STRING(63);
END_STRUCT
END_TYPE 

ObjId = Object ID of the PLC project instance
TaskCnt = Number of tasks in the runtime system
OnlineChangeCnt = Number of online changes since the last complete download
Flags = Reserved
AdsPort = ADS port of the PLC application
BootDataLoaded = PERSISTENT variables: LOADED (without error)
OldBootData = PERSISTENT variables: INVALID (the back-up copy was loaded, since no valid file was present)
AppTimestamp = Time at which the PLC application was compiled
KeepOutputsOnBP = The flag can be set and prevents that the outputs are zeroed when a breakpoint is reached. In this case the task continues to run. Only the execution of the PLC code is interrupted.
ShutdownInProgress = This variable has the value TRUE if a shutdown of the TwinCAT system is in progress. Some parts of the TwinCAT system may already have been shut down.
LicensesPending = This variable has the value TRUE if not all licenses that are provided by license dongles have been validated yet.
BSODOccured = This variable has the value TRUE if Windows is in a BSOD.
TComSrvPtr = Pointer to the TcCOM object server
AppName = Name generated by TwinCAT, which contains the port.
ProjectName = Name of the project