Beckhoff ELX3351, Руководство по эксплуатации

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Parameterization and programming
ELX3351 55 Version: 1.3.1
The process data which then belong to the device are listed underneath it (G). So that the individual bit
meanings are visible, e.g. in the
Status status word, and can be separately linked (G), ShowSubVariables
must be activated in the System Manager (F). The bit position at which the subvariables are located in the
status or control word
Ctrl ) can be taken from the address overview (H) or the following information.
Predefined PDO Assignment
In order to simplify the configuration, typical configuration combinations of process data are stored in the
device description. The predefined configurations can be selected in the process data overview. Therefore
the function is available only if the ESI/XML files are saved in the system (
downloadable from the Beckhoff
website ).
The following combinations are possible (see also Fig. ELX3351 process data selection in the TwinCAT
System Manager , E):
Fig. 46: ELX3351 - selection Predefined PDO Assignment
• Standard (INT32): [Default setting] load calculation; 32-bit integer load value as final value according to
the calculation specifications in the CoE, no further conversion necessary in the PLC.
• Standard (REAL): Load calculation; 32-bit floating-point load value as final value according to the
calculation specifications in the CoE, no further conversion necessary in the PLC.
5.5.2 Default process image
The default process image is standard (INT32).