Ethernet communication has four IODDTs:
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T_COM_ETY_1X0 specific to the modules ETY_110 and ETY_120
-
T_COM_ETY_210 specific to the module ETY_210
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T_COM_ETYX103 specific to the module ETY_4103/PORT/5103
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T_COM_ETHCOPRO specific to the Ethernet channel of the processor TSX P 57 5634
NOTE: IODDT variables can be created in two different ways:
Types of Language Objects
Each IODDT has a set of language objects that is used to control and check the operation of the IODDT.
There are two types of language objects:
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implicit exchange objects, which are exchanged automatically on each cycle turn of the task associated with the module
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explicit exchange objects, which are exchanged at the request of the application ,using explicit exchange instructions
Implicit exchanges concern the states of modules, communication signals, slaves, etc.
Explicit exchanges are used to set parameters and diagnose the module.
