The following system requirements apply for the use of the data interface ibaPDA-Request-S7-UDP:

  • ibaPDA v8.13.0 or higher

  • Basic license for ibaPDA + license for ibaPDA-Interface-S7-TCP/UDP + license for ibaPDA-Request-S7-UDP

  • SIMATIC S7 controller S7-300, S7-400, S7-400H, S7-1500, WinAC, for access to optimized data blocks S7-1500 firmware V3 or later

  • In case PC/CP connections are used:

    • SIMATIC STEP 7 or SIMATIC NET, or

    • SIMATIC TIA Portal

  • SIMATIC CFC (beginning with V6.0), if signals are to be chosen by drag & drop1

For integrating the Request blocks in the S7 program:

  • SIMATIC STEP 7 V5.4 SP5 or higher, or

  • SIMATIC STEP 7 (TIA Portal) V16 or higher (function block libraries for older versions may be available on request), V18 or higher for access to optimized data blocks

For further requirements for the used computer hardware and the supported operating systems, refer to the ibaPDA documentation.
System restrictions

  • Access to S7-1200 controllers is not supported.

  • Connectors of CFC blocks, which have constant values assigned, have no operand address. They are marked as constant in the address book and cannot be selected as signal.

  • If function blocks (FB) are used in CFC, the internal static variables of the FB are also displayed in the address book, because they are treated in exactly the same way as connectors by the compiler. These are to be ignored.

  • For data acquisition, ibaPDA supports only the following data types:

    • BOOL, BYTE, WORD, DWORD, INT, DINT, REAL, TIME, CHAR

      All other data types exist in the address book but cannot be entered in the signal list.

  • For functions (FC) with connections of the data type STRING, POINTER, STRUCT or ANY under CFC, the interpretation of the SCL code does not work, as there are no references to the data types available in the source.
ibaREQsym block family

  • TIA Portal V18 or higher

  • Firmware V3.0 or higher

  • Supported items: E, A, M and items from data blocks, only elementary data types and individual items from structured data types

  • Variables must have the attribute "Accessible from HMI/OPC UA/Web API" or "Writable from HMI/OPC UA/Web API".

  • Max. length of symbolic variable name (fully qualified name including namespace): 254 UTF-16 characters

  • Max. 10 Request instances can be simultaneously active per S7 CPU.

  • Max. 2000 symbols can be simultaneously requested per S7 CPU.

Further information about the "ResolveSymbols" and "MoveResolvedSymbolsToBuffer" functions can be found in the Siemens documentation.
ibaREQ3sym block family

  • TIA Portal V19 or higher

  • Firmware V3.0 or higher

  • Supported items: E, A, M and items from data blocks, only elementary data types and individual items from structured data types

  • Variables must have the attribute "Accessible from HMI/OPC UA/Web API" or "Writable from HMI/OPC UA/Web API".

  • Max. length of symbolic variable name (fully qualified name including namespace): 254 UTF-16 characters

  • Max. 10 Request instances can be simultaneously active per S7 CPU.

  • Max. 2000 symbols can be simultaneously requested per S7 CPU.
License information

Order no.

Name

Description

31.001040

ibaPDA-Interface-S7-TCP/UDP

Extension license for an ibaPDA system for one TCP/IP and UDP/IP interface with 64 connections

31.101040

one-step-up-Interface-S7-TCP/UDP

Extension license for 64 additional S7-TCP/UDP connections of an ibaPDA-Interface-S7-TCP/UDP interface (max. 3 extension licenses)

31.001311

ibaPDA-Request-S7-UDP

Extension license for an ibaPDA system for using Request-S7 with the ibaPDA-Interface-S7-TCP/UDP interface with 2 connections

31.101311

one-step-up-Request-S7-UDP

Extension license for 2 additional Request-S7-UDP connections of the ibaPDA-Request-S7-UDP interface (max. of 127 connections)

The use of ibaPDA-Request-S7-UDP requires the existence of an ibaPDA-Interface-S7-TCP/UDP license. For each active Request module, one S7-TCP/UDP connection and one Request-S7-UDP connection are occupied.