e30bl530.10
Subslot
0x0001
DAP
Slot 0
Device
Subslot
0x0001
MAP
Subslot
0x0002
Slot 1
Application
Propulsion & Machinery
General Purpose I/O OC7C0
Slot 3
Option
Subslot
0x0001
MAP
Subslot
0x0009
General
Purpose
I/O
DIN
T13
Subslot
0x0002
General
Purpose
I/O
AIN
T2
...
Basic I/O (+BDBA)
Slot 2
Option
Subslot
0x0001
MAP
Subslot
0x0012
Basic I/O
AIN
T34
Subslot
0x0002
Basic I/O
Relay
T2
...
iC Speed
Profile
Figure 2: Example of a PROFINET Device Model with Functional Extension Options Installed in an iC7-Marine Drive
2.8
Network Topologies
2.8.1
Overview
Communication interface X1/X2 is used for fieldbus connection.
The communication interface in the iC7 drives and power converters has 2 Ethernet ports (X1 and X2) and an embedded switch with 2
Ethernet RJ45 connectors. It has 1 MAC and IP address, and is considered a single device in the network. The communication interface
supports 3 network topologies:
l
Line topology
l
Star topology
l
Ring topology
2.8.2
Line Topology
In many applications, line topology enables simpler cabling and the use of fewer Ethernet switches. Observe network performance and
the number of devices in a line topology. Too many devices in a line may exceed network update time limits.
NOTICE
When line topology is used, take precautions to avoid timeout in the PLC when more than 8 drives or power converters are
installed in series. Each drive or power converter in the network adds a small delay to the communication due to the built-in
Ethernet switch. When the update time is too short, the delay can lead to a timeout in the PLC.
l
Set the update time as shown in the table. The numbers given are typical values and can vary from installation to installation.
Number of units connected in series
Minimum update time [ms]
<8
2
8–16
4
16–32
8
33–50
16
>50
Not recommended
NOTE:
Using tools such as MyDrive® Insight may influence system performance in a line topology.
20
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Operating Guide | iC7-Marine PROFINET
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