ICC
10.5.2 I/O Data Configuration Arrays
The I/O data configuration arrays consist of two separate elements (refer to Figure 18.) The command register configuration defines the structure of the command data sent from the Profinet controller to the drive, and the status register configuration defines the structure of the status data sent from the drive back to the controller. These arrays allow the creation of
Figure 18: I/O Data Configuration
The command register array locations are numbered
As an example, looking at the default configuration shown in Figure 18, we can see that each array contains two defined registers. Therefore, up to 4 “meaningful” bytes of data can be both received and sent (the qualifier “meaningful” is used here because the module currently selected by the controller may require larger input and/or output data sizes, but all unreferenced command data will be ignored, and all unreferenced status data will contain dummy “0” values). The first word (two bytes) of command data will be written to register 1007 (command 1) and the second word will be written to register 1008 (frequency command). Similarly, the first word of status data will contain the value of register 1402 (status 1) and the second word will contain the value of register 1401 (output frequency).
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