Industrial communication networks – Wireless communication network and communication profiles – WirelessHART™ This International Standard 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. This standard specifies 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.