System Boot With System Network - Siemens SINUMERIK 840D sl Manual

General information and networking
1.4 Networking
Connection to a company network
Each NCU can be connected via X130, and each PCU can be connected via "Ethernet 1" to
the company network. The company network is used to exchange operating software with
servers or to execute part-programs directly from servers in the company network. Company
network and system network should always be logically and also physically separated.
Service interface X127
The service interface X127 of the NCU is used for direct connection of a PG/PC for service
purposes. Here access with STEP 7 to the PLC, and with NCU 7x0.3 PN also to PROFINET
is possible.
With direct connection (peer-to-peer) of a PG/PC to X127 it is absolutely necessary that the
PG is operated as a DHCP client.
1.4.1.2

System boot with system network

System behavior at boot
As of NCU system software V2.4 SP1 and PCU-Basesoftware V8.1, system boot behavior is
based on the following principle:
● For configuration of an NCU 7x0 with a PU 50, the default for a network configuration is as
follows: The NCU keeps the default IP address 192.168.214.1 on X120, the PCU 50 keeps
the default IP address 192.168.214.241 on Eth2.
● For a configuration of more than 1 NCU 7x0 without PCU, with one or several PCU 50, then
a differentiation must be made between two cases:
– At boot automatically all address conflicts and DHCP conflicts are resolved and the
– If in the user's view there is a requirement that all NCUs, and possibly also the PCUs,
● The user can specify a DHCP master in the basesys.ini file.
● Assigning names:
– The user should assign meaningful names for all NCUs in the basesys.ini file; if not the
– A PCU 50 always has a computer name that can be changed as needed.
● The IP addresses of TCUs and MCPs are freely assigned within the specified address band
at each boot. The MCPs are identified in the PLC via their DIP switch setting.
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system is ready for operation. In this configuration there is no guarantee that all NCUs
and PCUs will always receive the same IP address at each system boot.
get a defined constant IP address at each boot, for example because the IP address is
entered in the respective PLC program, then the user must configure a fixed IP address
for each NCU 7x0/PCU 50 in question, in the basesys.ini file.
names will be generated automatically.
Operator panel front: OP 012
Manual, 09/2016, A5E36371591B