Siemens SINUMERIK 840D sl Commissioning Manual page 363

Error
HMI displays alarm 120202
"Wait for connection to
NC/PLC" and/or no values
(only '#').
Error
HMI displays alarm 120202 "Wait for connection to NC/PLC" and/or no values (only '#').
SINUMERIK Operate (IM9)
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
Error cause 2.4
The PCU has an IP address that does not
belong to the network or has an invalid IP
address.
TCU boot support is activated on the PCU (=
DHCP is enabled) and the PCU is the
standby DHCP/DNS server (i.e. in the role of
the DHCP client). An additional active DHCP
server was switched into the system network
while operational; this active DNCP server
also has an incorrect address range. This is
a configuration error.
Possible error causes and remedies
Error cause 3.1
The NCU has an IP address that does not match the network or has an invalid IP address.
The NCU does not participate in DHCP operation and runs with a permanently set IP
address that is incorrect and does not match the system network.
Remedy 3.1
Connect the service PG to the NCU via X127. Log into Linux via WinSCP or Putty. Using
the service command 'sc show ip -eth0', display the actual settings - and check these. If the
cause of the error is confirmed, then the NCU must be reparameterized.
Perform the service commands and settings:
sc enable DHCPSvr –X120 or the equivalent sc enable DHCPSvr –eth0 to activate
•
DHCP operation
sc enable DHCPSync –X120 -LOW|HIGH|MASTER or equivalent sc enable DHCPSync
•
–eth0 -LOW|HIGH|MASTER to set the DHCP synchronization mode of this NCU
Enter the following entries correctly in the /user/system/etc/basesys.ini file
:[InternalInterface]
; With InternalIP and InternalNetMask (both must be set together),
; you can change the address on the internal/TCU/automation/system net.
InternalIP=192.168.214.1
InternalNetMask=255.255.255.0
...
; This is the range of dynamic IPs given out by the DHCP server
; Defaults should be sensible
InternalDynRangeStart=192.168.214.10
InternalDynRangeEnd=192.168.214.239
The values in green should be set corresponding to the overall system.
Then restart the NCU.
Service and diagnostics
18.11 Station-related network diagnostics
Remedy
Correctly set the network settings for the
system network in the Windows service
mode (set the fixed specified IP address and
subnet mask for the system network, use the
addressing mode, fixed IP address).
Execute the following actions using the
"System Network Center" program:
Connect the DHCP service to the
•
interface for the system network
Set the DHCP mode (TCU support,
•
DHCP SyncMode, address range of the
addresses that can be assigned)
Initiate DHCP clear
•
In addition, at the station with DHCP master
(DHCP SyncMode = ON_MASTER) a DHCP
clear should be initiated.
Switch the complete system off and on again.
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