How do I zero out a block of registers using IEC in Concept 2.2 and above ?

To zero out a block of registers using IEC in Concept 2.2 and above use a block called IEC_BMDI that can perform this function. The block was designed to move a source block to a destination block. This can be used to zero out registers. This block is comparible to the BLKM instruction in 984LL. It is located in the LIB984 of the FFB Library.