AC500 FBP Slave Interface

Note

Some Processor Modules do not provide a FBP interface.

The FBP slave interface is used to connect the AC500 controllers as fieldbus slave via FieldBusPlug (FBP).

The FBP interface is configured as FBP_Online_Access by default. This allows programming and login via the FBP slave interface using the device UTF21-FBP adapter (USB connection on PC-side).

Note

No protocol is set for the FBP interface in the standard configuration (setting “FBP - none”).

If the FBP slave interface address (ADR > 0) is set using the display/keypad, this address has priority over the PLC configuration setting.

The FBP slave interface occupies the I/O area:

%IB3000 .. %IB3999 or %QB3000 .. %QB3999.

  1. Add the desired FBP module to the FBP node and modify the FBP slave parameters if required:

    Parameter

    Default

    value

    		 Value Meaning
    Run on config fault No No The PLC program is not executed if there are faults in configuration.
    Yes The PLC program is executed even if there are faults in configuration.
    Operation mode (read only) Slave Slave Operation mode of FBP (Slave). This parameter is read-only (not editable).
    Address 1 0…255 Address of the FBP Slave.

  2. Check the I/O configuration. I/O ranges of the different slaves:

    FBP Fieldbus I/O range
    PDP22 DP V1 modular PROFIBUS DP V0/V1 8 modules, but a total of 32 bytes and 128 words in/out, 244 bytes max. per direction, a total of 368 bytes per slave
    DNP21 DEVICENET 1 module with a maximum of 16 bytes and 16 words (inputs or outputs), for example 1 x “Module 16 Byte and 16 Word In/Out”
    DNP21 modular DEVICENET 8 modules, but a total of 16 bytes and 16 words (input or output)
    COP21 CANOPEN 8 modules, but a total of 16 bytes and 16 words (input or output)

    Depending on the fieldbus master, the Processor Module can exchange a different amount of input/output data with the master.

    ⇒

    A maximum of 8 modules can be appended to the FBP slave interface. The size of possible modules depends on the used FBP, fieldbus and Communication Module (fieldbus master).

    The byte inputs and outputs are provided as BYTE and BOOL and the word inputs and outputs as WORD, BYTE and BOOL.

    The I/O modules saved in the PLC configuration and their addresses must match the entries in the configuration of the respective fieldbus master.

    If you want to exchange less data than the maximum allowed amount of I/O data with the fieldbus master, you can setup a configuration consisting of different modules.

  3. Set the I/O mapping.

    See Symbolic Names for Variables, Inputs and Outputs for further details on mapping Symbolic Names for Variables, Inputs and Outputs.