Data Area
In general, TcCOM objects can contain data areas that can be used by the environment (e.g., by a PLC instance or by the TwinCAT I/O area). For TwinCAT MC3 TcCOM objects, you have a choice of data structures to use via the Data Area tab.
Inputs
Enable (default) | Name | Type | Description |
|---|---|---|---|
| Signal | BIT | Input for the trigger signal. For example, it can be linked to a variable from the PLC or to a digital input on an I/O terminal. |
| WcState | BIT | Working counter |
ToPlc
Enable (default) | Name | Type | Description |
|---|---|---|---|
| Oid | OTCID | Object ID for linking to a touch probe object in the PLC |
Notice | |
Warning in the error log window caused by selected entries that are not linked to an I/O device Entries in the data areas of drive and encoder objects that are enabled (Enable = True) but are not linked to the I/O drive object result in a warning in the error log window. If the link for a function used at runtime is missing, this results in a runtime error. For example, an axis cannot be started if the status word from the I/O drive object is not linked.
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