  In the paper by W. Dai et al. (IEEE Trans. On Industrial Informatics, vol.
11, no. 3, pp. 771-781, June 2015), a formal mapping between IEC 61499 and SOA
is presented and a SOA-based execution environment architecture is described.
In this letter, the proposed in the above paper mapping and the execution
environment architecture are discussed and their potential for the exploitation
is disputed.
