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ILC 1X1
Controllers with applicative
(programmed) redundancy
Network redundancy with
Media Redundancy Protocol
(MRP)
PROFINET devices with
Phoenix Redundancy Layer
16
PHOENIX CONTACT
2.2.4
Applicative system redundancy with ILC 171 ETH 2TX or
ILC 191 ETH 2TX
The following figure shows an example of applicative system redundancy. The example
shows a PROFINET device with control function (ILC 171 ETH 2TX) that is connected to a
PROFINET network by means of a switch. Identical application programs run on both
higher-level PROFINET controllers. To achieve synchronization, both PROFINET control-
lers are connected via an Ethernet connection by means of a switch. PROFINET controller
A operates as primary controller, PROFINET controller B operates as backup controller.
The ILC 191 ETH 2TX also supports applicative system redundancy.
A
RUN/PROG
DISPLAY
STP
MRESET
LNK
LNK
I/O
RFC 470 PN 3TX
LAN1.1
LAN1.2
Ord.No.2916600
ACT
ACT
LNK
USB
LAN2
ACT
24VDC
+
-
C
Figure 2-5
Applicative system redundancy – example
For additional information on applicative system redundancy, please refer to the
AH EN APPLICATIVE SYSTEM REDUNDANCY application note. This application note
can be downloaded at phoenixcontact.net/products.
A
Primary controller (in the example: RFC 470 PN 3TX Remote Field Controller)
B
Backup controller (in the example: RFC 470 PN 3TX Remote Field Controller)
C
Managed Switches
D
PROFINET device with control function (in the example: ILC 171 ETH 2TX with PRO-
FINET device function and Phoenix Redundancy Layer)
ETHERNET
PROFINET
C
D
B
RUN/PROG
STP
MRESET
LNK
LNK
RFC 470 PN 3TX
LAN1.1
LAN1.2
Ord.No.2916600
ETHERNET
ACT
ACT
LNK
USB
LAN2
ACT
C
ILC 171 ETH 2TX
Order-No.: 2700975
HW/FW: xx/xxx
FR
E
RDY FAIL
BSA PF
MAC Addr.: xx.xx.xx.xx
UL
FF
AUTOMATIONWORX
US
Q1
Q2
I1
I2
I5
I6
UM
Q3
Q4
I3
I4
I7
I8
MRESET
STOP
RUN / PROG
X1
RESET
PRG
LNK
ACT
X2.1
LNK
ACT
X2.2
DISPLAY
I/O
24VDC
+
-
ETHERNET
PROFINET
8385B005
8385_en_02
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