The IODDTs are predefined by the manufacturer and contain inputs/output language objects belonging to the channel of a module. The IODDT associated with the TBX SAP 10 gateway is T_SAP_10, which is used for all standard Fipio profiles.
Other language objects (except IODDTs) are associated with the
TBX SAP 10 module.
NOTE: IODDT variables may be created in two ways:
Each IODDT contains a group of language objects, which are used to control them and check their operation.
There are two types of language objects:
-
Implicit exchange objects, which are automatically exchanged on each cycle of the task associated with the module,
-
Explicit exchange objects, which are exchanged when requested to do so by the project, using explicit exchange instructions.
Implicit exchanges concern the status of the modules, the communication signals, the slaves, etc.
Explicit exchanges allow module parametering and diagnostics.
