Network Topologies; Line Topology - Danfoss EtherNet/IP iC7 Series Operating Manual

iC7 Series EtherNet/IP
Operating Guide
Coast stop
OR quick stop
CTW bit 1=false
OR bit 2=false
Coast stop
CTW bit 1=false
= 1 priority
st
= 2 priority
nd
= 3 priority
rd
Illustration 1: General State Diagram

2.5 Network Topologies

Communication interface X1/X2 is used for fieldbus connection.
The iC7 series communication interface 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:
•

Line topology

• Star topology
• Ring topology
2.5.1 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.
14 | Danfoss A/S © 2023.09
S3: Switching ON inhibited
STW bit 6=true 0, 1, 2=false
OFF Coast stop
AND No coast stop OR quick stop
AND No quick stop CTW bit 1=false
CTW bit 0=false OR bit 2=false
AND bit 1=true
AND bit 2=true
S2: Ready for switching ON
STW bit 0=true 1, 2, 6=false
ON OFF
CTW bit 0=true CTW bit 0=true
S3: Switched ON
STW bit 0,1=true 2, 6=false
Enable Disable
operation operation
CTW bit 3=true CTW bit 3=false
S4: Operation
STW bit 0, 1, 2=true 6=false
Coast stop
CTW bit 1=false
S5: Switching off
STW bit 0, 1=true
bit 2, 6=false
Standstill
Quick stop
STW bit 2=false
Ramp stop
ON
CTW bit 0=false
CTW bit 0=true
AQ456329199699en-000101 / 136R0335
Overview
Standstill
Quick stop
OFF Quick stop
CTW bit 2=false