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5 Implementation of EtherNet/IP
5.2 Classes and instances of the EtherNet/IP-gateway
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• Interface Status
The Status attribute indicates the status of the TCP/IP network interface.
Refer to the state diagram, Figure 33: TCP/IP object state diagram (acc. to CIP Spec., Vol.2,
Rev. 1.1), Page 72 for a description of object states as they relate to the Status attribute.
• Configuration Capability
The Configuration Capability indicates the device’s support for optional network configura-
tion capability.
• Configuration Control
The Configuration Control attribute is used to control network configuration options.
Table 30:
Interface Status Bit(s) Name Definition
0-3 Interface Configuration
Status Indicates the status of the Interface Configuration attri-
bute:
0 = The Interface Configuration attribute has not been
configured
1 = The Interface Configuration attribute contains valid
configuration.
2 to 15 = Reserved
4 to 31 reserved
Table 31:
Configuration
Capability Bit(s) Name Definition Value
0 BOOTP Client The device is capable of obtaining
its network configuration via
BOOTP. 1
1 DNS Client The device is capable of resolving
host names by querying a DNS
server. 0
2 DHCP Client The device is capable of obtaining
its network configuration via
DHCP. 1
Table 32:
Configuration
Control Bit(s) Name Definition
0-3 Startup
Configuration Determines how the device shall obtain its initial config-
uration at
start-up.
0 = The device shall use the interface configuration
values previously stored (for example, in non-volatile
memory or via hardware switches, etc).
1 to 3 = reserved
4 DNS Enable Always 0.
5-31 Reserved Set to 0.