To zero out a block of registers using IEC in Concept 2.2 and above one can use a block called IEC_BMDI. The block was designed to move a source block to a destination block. This can be used to zero out registers. This block is comparable to the BLKM instruction in 984LL. It is located in the LIB984 section of the FFB Library.
Released for: Schneider Electric USA
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