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Startup
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7 Startup
Once you have mounted, connected, and wired the controllers and all the bus devices, you
can start up the redundant control system.
Startup is largely performed using the PLCnext Engineer software.
However, first, a few startup steps need to be performed directly on the device.
7.1 Startup steps on the device
7.1.1 Preparing the first controller
Switching on the power
supplies
• Switch on the power supplies.
Assigning redundancy
type “First”
• Assign redundancy type “First” to the controller, see Section 4.11.7.2 .
During initial startup, the redundancy role PRIMARY is automatically assigned to the
controller with redundancy type “First”.
Optional:
Setting system IP ad -
dresses on the device
In the delivery state, the preset IP addresses for Ethernet interfaces LAN1, LAN2, and
LAN3.1/3.2 are as follows:
– IP address at LAN1: 192.168.1.10
– IP address at LAN2: 192.168.2.10
– IP address at LAN3.1/LAN3.2: 192.168.3.10
In redundancy operation, the preset IP addresses are used as the system IP address of the
respective Ethernet interface.
• If necessary, change the preset system IP addresses via the display of the first control -
ler, as described in Section 4.11.3.2 .
Please note:
The system IP addresses of interfaces LAN1, LAN2, and LAN3.1/3.2 must be in dif -
ferent subnets.
Alternatively, following initial startup, you can also set the system IP addresses via the
PLCnext Engineer software or the controller WBM.
For information on configuring the IP addresses in the PLCnext Engineer software,
please refer to Section 7.2.5 .
Information on configuring the IP addresses via the controller WBM is available in the
PLCnext Info Center .