IEC 62591:2010(E) specifies an additional Type 20 communication network to IEC 61158-5-20, IEC 61158-6-20 and a Communication Profile CP 9/2 in addition to IEC 61784-1 CPF 9 and covers the following: - Physical layer service definition and protocol specification, - Data-link layer service and protocol, - Application layer service and protocol, - Network management, - Security, - Communication profile, - Wireless procedures and Gateway. It cancels and replaces IEC/PAS 62591 published in 2009. This first edition constitutes a technical revision.