EtherNet/IP – Communication protocol 237
Instance attributes (Instance #1)
Connection object, class 05h
Do not modify this object. This object is only used while
establishing the connection between the adapter module and the
PLC.
The connection class allocates and manages the internal
resources associated with both I/O and explicit messaging
connections. The specific instance generated by the connection
class is referred to as connection instance or connection object.
The table below shows the connection object states.
# Attribute
name
Services Description Data
type
1 Interface
Speed
Get, Set 10 or 100 Mbps UDINT
2 Interface
Flags
Get, Set Interface status flags: DWORD
Bit Description
0 Link status
1 Half/Full duplex
2…4 Negotiation status
5 Manual setting
requires reset
6 Local hardware fault
7…31 Reserved
3Physical
Address
Get Ethernet MAC address of the
module
ARRAY
6XUSINT
State Description State Description
00 Non-Existent 03 Established
01 Configuring 04 Timed Out
02 Waiting for Connection
ID
05 Deferred Delete
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