Configuring Peer-to-Peer Data Blocks

The information to transfer over the peer network is defined in data blocks. Use the data blocks for safety and non-safety data. Data blocks can have either 16 or 128 channels. Add these types of data blocks:
  • Digital Inputs
  • Analog Inputs
  • Digital Outputs
  • Analog Outputs
Each data block must have a unique ID on the peer network. To enable communication between an input data block and output data block, the blocks must be on the same network, have the same Block ID, and reference each other’s Peer ID in the Peer List.
After adding a data block, wire status variables and data variables.
When adding a data block, define these properties:
Block ID
The number identifying the data block. Possible values range from 1 to 64.
Direction
Indicates whether a data block is an input or output.
Peer ID
For input data blocks, the number identifying the peer sending data. For output data blocks, the number identifying the peer receiving data. Possible values range from 1 to 40.
Type
The type of data block. Possible values are digital and analog.
Size
The amount of channels associated to a data block. Possible values are 16 and 128.
WARNING: The analog data block with 128 channels must only be used for non-safety related data since there are insufficient measures to ensure the transport of data meets the safety integrity level of SIL3.
To add a data block
  1. In the Communication View, right-click the required peer-to-peer network, and then click
    Add Data Block
    .
    The
    Data Block Configuration
     dialog box displays.
  2. In the
    Data Block Configuration
     dialog box, enter the required values, and then click
    OK
    .
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