Beckhoff CX20 2 Series, Manual

Page: 46 / 77

Configuration
CX20x2 46 Version: 1.7
7.3.4 Configuring EtherCAT cable redundancy.
The Embedded PC has two independent Ethernet interfaces, which can be used for EtherCAT cable
redundancy. Cable redundancy offers resilience for the cabling. Interruptions of the EtherCAT
communication due to broken wires or unplugged LAN cables are avoided.
5 VB
EK 1100
BECKHOFF
5 VB
EL 2032
BECKHOFF
5 VB
EL 2032
BECKHOFF
5 VB
EL 2032
BECKHOFF
5 VB
EL 2032
BECKHOFF
5 VB
EL 2032
BECKHOFF
EL 1110
BECKHOFF
FB1
PWR
TC
FB2
HDD
24V 0V
+ +
- -
PE PE
B
E
C
K
H
O
F
F
CX2020 CX2100
enter
nav
00
04
24V 0V
+ +
- -
PE PE
1
2
3
4
5
6
7
8
B
E
C
K
H
O
F
F
E
K
11
00
B
E
C
K
H
O
F
F
E
K
11
10
Fig. 31: Smallest possible configuration for EtherCAT cable redundancy.
Interference at the individual terminals is not intercepted by the cable redundancy.
Table 29: Cable redundancy, hardware for sample configuration.
Type Description
CX2020 Embedded PC Is the EtherCAT master in the example.
Bus Coupler EK1110 EtherCAT extension can be used to extend an EtherCAT
segment by up to 100 m.
EK1100 Bus Coupler The Bus Coupler relays the EtherCAT signal to connected
EtherCAT Terminals.
EtherCAT Terminals Any number of EtherCAT Terminals can be connected to
the CX20x0 Embedded PC and the Bus Coupler.
Requirements:
• For TwinCAT 2 you have to install and license the supplement TS622x | TwinCAT EtherCAT
Redundancy on the Embedded PC:
http://www.beckhoff.de/forms/twincat3/warenkorb.aspx?lg=de&title=TS622x-EtherCAT-
Redundancy&version=1.0.2
• In TwinCAT 3 the supplement is already included and only has to be licensed.
• Hardware wired as EtherCAT ring (see Fig.: Smallest possible configuration for EtherCAT cable
redundancy) and added in TwinCAT.