The CONF_DB can start at any point within a data block as specified by an offset range.
The connections and specific system data are described by an identically structured
parameter field.
Below, there are the subfields that are relevant for networking the CP. These must be
specified in the parameter field for system data. Some applications do not require all the
subfield types.
Subfield Parameter
ID Type Length
(byte)
Description Special features Use
1 SUB_IP_V4 4 + 4 IP address of the local station according
to IPv4
mandatory
2 SUB_NETMASK 4 + 4 Subnet mask of the local station mandatory
4 SUB_DNS_SERV_ADDR 4 + 4 DNS Server Address This subfield can
occur to 4 times.
The first entry is
the primary DNS
server.
optional
8 SUB_DEF_ROUTER 4 + 4 IP address of the default router optional
14 SUB_DHCP_ENABLE 4 + 1 Obtain an IP address
from a DHCP
0: no DHCP
1: DHCP
optional
Structure
Parameter field for system
data for CP
Structure
VIPA SPEED7
Network Communication
Ethernet Communication > FB 55 - IP_CONF - Progr. Communication Connections
HB00 | OPL_SP7 | Operation list | en | 18-30 171
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