Siemens SINUMERIK 840DE sl Commissioning Manual page 406

Configuring the network
17.6 Station-related network diagnostics
Error
17.6.3 Configuring TCP/IP diagnostics
The configuration of the network adapter is displayed in the "TCP/IP Configuration" window.
System network
On the system network, process data communication and image transmission of the
components are executed with the operating software for the display units (TCUs).
A TCU and NCU are connected to the system network via Ethernet interface X120.
A PCU is connected via the ETH2 Ethernet adapter.
Company network
The company network is used, for example, to access the network drives.
An NCU is connected to the company network via Ethernet interface X130.
A PCU is connected via the ETH1 Ethernet adapter.
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Possible error causes and remedies
Perform the following steps:
● Under network settings, on the PCU, set the required address again as fixed IP address in
the system network.
● At the NCU/PCU, which runs in the DHCP synchronization mode ON_MASTER or is active
DHCP server, execute a 'Clear DHCP' (for an NCU using the sc command sc clear dhcp –
X120, for a PCU, using the "System Network Center" program).
● Restart the system.
Error cause 3
An address that does not belong to the network has been configured for the PCU.
An address has been configured for the PCU, which does not match the network address in the
system network, and is therefore dynamically assigned an IP address from the active server via
DHCP. The PCU is not an active DHCP server, but is operated in the synchronizing DHCP mode.
Remedy
Perform the following steps:
● Under network settings, on the PCU, set the required address again as fixed IP address in
the system network.
● On the PCU, using the "System Network Center" program, link the DHCP service to this new
address (first screen in the "System Network Center" program), if required, adapt the other
DHCP settings (dynamic address range).
● At the NCU/PCU, which runs in the DHCP synchronization mode ON_MASTER or is active
DHCP server, execute a 'Clear DHCP' (for an NCU using the sc command sc clear dhcp –
X120, for a PCU, using the "System Network Center" program).
● Restart the system.
Commissioning Manual, 12/2017, 6FC5397-1DP40-6BA1
SINUMERIK Operate (IM9)