Engineering via SICAM WEB
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual Unrestricted 325
DC8-037-2.02, Edition 10.2017
9.1.2.7 Autoconfiguration
CP-8000/CP-802x provides the option of being configured automatically by means of a com-
plete autoconfiguration file via DHCP service. The autoconfiguration file is a previously gener-
ated CP-8000/CP-802x backup (see 9.3.2, Download Device Settings).
Note
If a SD card generated through copy is used, please make sure that the file dhcpid is deleted (located in
AUTOCONFIG folder).
The selection of the autoconfiguration resides in the directory tree under
SICAM A8000 CP-80xx | Master module | AU common settings
(the checkbox SHOW ALL PARAMETERS must be activated).
With the expert parameter Autoconfiguration = YES the DHCP service is activated.
In a network with DHCP server, the DHCP server defines the IP address on X1. If the DHCP
server is no more available, the target device can be accessed via X1 with the IP address
169.254.0.1, if the “lease time” of the DHCP server is already terminated. Otherwise the IP
address from the DHCP server is used until the termination of the time. The time is defined by
the DHCP server.
Note
DHCP can be easily disturbed and manipulated because DHCP clients accept any DHCP server.
The accidental activation of a DHCP server, for example by a simple DSL router or wireless router on
delivery status can largely paralyze a network. That may respond faster than the foreseen DHCP server
and thereby distributes invalid configurations.
On the DHCP server, corresponding DHCP options must be configured:
Option 6: DNS Servers (optional)
Option 61: Client Identifier
Option 66: TFTP Server Name
Option 67: Backup File Name
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