ADS Interface
The various ControlNet services are represented through ADS-Read and ADS-Write. The Net-ID of the PC is to be given as the Net-ID, with 16000 as the port number. In the IndexGroup, the Mac-ID that is to be addressed (or the Produce Buffer-ID in the case of send connections (e.g. to a PLC5 or ControlLogix)) is to be given, along with the desired data. The IndexOffset specifies the offset within the data.
IndexGroup | Data |
|---|---|
0x000000yy | Process data I/O or receive connection (yy: Mac-ID) |
0x000100yy | Process data send connection (yy: Produce Buffer ID) |
0x000001yy | ID_Object (Read only, yy: Mac-ID) |
0x000002yy | Diagnostic_Counter (Read only, yy: Mac-ID) |
0x000003yy | Keeper_Info (Read only, yy: Mac-ID) |
0x00000400 | CCO_Directory (Read only) |
0x00000500 | Card_State (Read only) |
If a 5136CN card is not found, the ADS-Error-Code 0x70C (Files, etc. not found) is returned. In the NT System32 directory there are also debug files named "sststartup.txt", "sstcyclic.txt" and "sstshutdown.txt". The last two only contain data after the TwinCAT system has been halted.