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Operation as a PROFINET device
8089_en_03
PHOENIX CONTACT
161
9.4.1.1
Additional process data
The SMN can send the following process data:
–
Summary of the link states of all ports (three bytes) - each port corresponds to one bit
(0 - Link down; 1 - Link up)
–
The slots transmit link information for each port. This includes:
- Link status: (0 - Link down; 1 - Link up)
- Far end fault status: (0 - No fault; 1 - Fault)
- Port enable status: (0 - Enabled; 1 - Disabled)
- Link mode: (0 - Forwarding; 1 - Blocking)
9.5
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 Step7 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.
Interface removed
On
0x07
0x00
Off
0x08
0x00
MRP ring failure
On
0x09
0x00
Off
0x0a
0x00
Link enable status
On
0x20
Port
Off
0x21
Port
Byte
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Bit
7
6
5
4
3
2
1
0
Port
8/16/24 7/15/23 6/14/22 5/13/21 4/12/20 3/11/19 2/10/18 1/9/17
Bit
7
6
5
4
3
2
1
0
Meaning
Link mode
Port
enable
Far end fault Link status
Table 9-1
Assignment of the control word
Action
Status
Byte 0
Byte 1
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