Beckhoff EPP3504-0023 Short Manual page 148

Commissioning on EtherCAT Master
Fig. 84: Creating the links between PLC variables and process objects
In the window that opens, the process object for the "bEL1004_Ch4" BOOL-type variable can be selected
from the PLC configuration tree:
Fig. 85: Selecting BOOL-type PDO
According to the default setting, only certain PDO objects are now available for selection. In this example,
the input of channel 4 of the EL1004 terminal is selected for linking. In contrast, the checkbox "All types"
must be ticked to create the link for the output variables, in order to allocate a set of eight separate output
bits to a byte variable in this case. The following diagram shows the whole process:
148 Version: 1.2 EPP3504-0023