The EFB connection to the input and output references (%IW and %QW) is accomplished through a graphic connection to the ERT slot number, in the same way as with analog modules. The currently available QUANTUM and DROP EFBs from the I/O Management library are used as follows: QUANTUM for local and DROP for remote racks. These EFBs transfer an integer index to every specified slot, which points to an internal data structure with the configured values. The module parameters and the ID are stored there, in addition to the addresses and lengths of the assigned input and output references (%IW and %MW).

A significant improvement in the runtime can be achieved by deactivating the QUANTUM or the DROP EFB after the first execution.

Setting the input marker CL_TT causes the FIFO buffer event of the ERT to be cleared. Setting the markers for one cycle is sufficient.

Setting the input marker CL_COUNT causes the ERT counter to be cleared by the ERT. Setting the markers for one cycle is sufficient.