The Tcu Cannot Establish A Network Connection To The Assigned Pcu - Siemens SINUMERIK 840D sl Commissioning Manual

Error
18.11.2.5

The TCU cannot establish a network connection to the assigned PCU

Error
The PCU does not have the IP address specified in the configuration, but an address from the IP range of the system
network that can be dynamically allocated. In this error case, the TCU cannot reach its configured PCU for display.
SINUMERIK Operate (IM9)
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
Possible error causes and remedies
Remedy
Correct the configuration using the "System Network Center" program. The TCU automatically
reboots.
Error cause 2
The connection to the HMI has not been established - neither the connection configured in
config.ini nor the default connection. The computer, to which the TCU should connect after
booting according to the configuration in config.ini, cannot be reached because the computer
is not switched on/is not available.
Remedy
Switch off the computer (NCU or PCU) and switch on again.
Error cause 3
The connection to the HMI has not been established - neither the connection configured in
config.ini nor the default connection. The HMI on the computer, to which the TCU should
connect after booting according to the configuration in config.ini, cannot be reached because
the HMI is deactivated.
Remedy
Activate the HMI on the NCU using the service command sc enable HMI.
Error cause 4
The connection to the HMI has not been established - neither the connection configured in
config.ini nor the default connection. The HMI on the computer, to which the TCU should
connect after booting according to the configuration in config.ini, cannot be reached because
the HMI has either not start or has crashed due to a software error.
Remedy
Switch off the computer (NCU or PCU) and switch on again.
Possible error causes and remedies
Error cause 1
IP address assigned twice
The PCU has a default IP address which is also configured for another NCU/PCU. This means
that an IP address has been assigned twice and therefore there is a system configuration
error.
The PCU is not an active DHCP server (otherwise, it would have the required IP), however, it
is operated in the synchronizing DHCP mode. As the address requested from the PCU has
already been assigned, the PCU is allocated an address from the dynamic address range via
DHCP.
Service and diagnostics
18.11 Station-related network diagnostics
361