Phoenix Contact 2700689, Руководство пользователя, Страница: 40 / 52

FL SWITCH IRT
40 / 52
PHOENIX CONTACT 8289_en_04
6.5 PDEV function description
The PDEV function provides an extended scope of functions for switches in PROFINET
mode. This includes displaying neighbor and topology information in the engineering tool.
This information is determined using the Link Layer Discovery Protocol (LLDP) and can be
used, for example, to compare the desired and actual network.
In addition, the PDEV function is used to display the transmitted information via the respec-
tive Ethernet ports.
The PDEV function uses two new submodules:
– Interface submodule with port number 0x8X00 (X: from 0 to F)
– Port submodule with port number 0x8IXX (I: Interface ID; X: Port number)
These submodules are represented in the Step 7 engineering tool. PROFINET communica-
tion enables information about the port speed, duplex mode, and the link status to be read.
An engineering tool reads and then displays the neighbor and topology information via
SNMP.
6.5.1 PROFINET stack and PDEV function
The PDEV function is supported from PROFINET stack version 2.2 or later. The following
functions are supported by PN stack 2.2:
– Link status, port mode, and port MAC address can be requested via the port
– Storing of PDEV data
– Use of the PN stack LLDP in PN mode (used for neighbor and topology detection)
– Support for device replacement and application redundancy
– POF diagnostics