SINUMERIK operating mode
6.2 Networking
ITC V3, ITC V3 PRO
132 Operating Instructions, 03/2024, A5E42761061-AF
6.2.1.4 Factory default settings
Eth 2 with a static IP address
Preconfiguration of the ITC
The ITC is configured as a DHCP client and primarily accepts IP addresses from SINUMERIK
components, from the DHCP server of such components that are inherent to SINUMERIK, for
example, an NCU at X120 or an IPC on the system network or from a default DHCP server. The
behavior of the ITC cannot be changed here.
An ITC is a SINUMERIK DHCP client.
The ITC has two network connections.
An ITC executes a boot via the network. The boot server is the computer node from which the
ITC also obtains its IP address.
Preconfiguration of the IPC
An IPC has at least two Ethernet interfaces. When the "Sinumerik PCU Base Software" is
installed, these Ethernet interfaces are preset as follows for SINUMERIK:
X1 is preset as a default DHCP client for connection to a company
network.
X2 is preset as a SINUMERIK DHCP server for connection to a
system network. The static IP address 192.168.214.241 is preset
on X2.
Preconfiguration of the NCU
On the X120, the NCU is preconfigured for the SINUMERIK DHCP protocol. The NCU is pre-
selected here as a SINUMERIK DHCP server. On X120, the NCU occupies the static IP address
192.168.214.1 with the subnet mask 255.255.255.0 in its capacity as a DHCP server. The
DHCP server of the NCU assigns IP addresses from the range 192.168.214.10 –
192.168.214.239 to the DHCP clients.
It is also possible to make the NCU a DHCP client. The configured IP address in basesys.ini is a
"requested" IP address, which is rejected in the case of an address conflict and also denied
and replaced by a dynamic IP from the address range.
In large system networks, it is mandatory to set an NCU/IPC as the DHCP master. If an
additional 2-3 hosts are used (NCU/IPC), the user sets the DHCP priority to "ON_HIGH". For the
other hosts, the user sets DHCP priority to "ON_CLIENT_SYNC" or "ON_CLIENT_NO_SYNC".
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