74BConnection Object
7BChapter Four: Operation
62
Table 30: I/O Poll Messaging Instance Attributes
Attribute
ID # (dec)
Attribute Name
Default
Value Description
1
state
01
Indicates the Poll Connection Object
is in the
Configuring
state.
2
instance_type
01
Indicates this is an I/O Connection.
3 transportClass_trigger
83
hex
Server/Transport Class 3.
Implementations can choose
Transport Class 3 as the default.
4
produced_connection_id
—
See the Slave’s I/O Poll Response
Message in Table 17, page 48.
5
consumed_connection_id
—
See the Master’s I/O Poll Command
Message in Table 17, page 48.
6 initial_comm_characteristics 01
Indicates (1) the Slave’s I/O Poll
Connection produces across Message
Group 1 and consumes across
Message Group 2 and (2) the Slave’s
Node Address appears in the CAN
Identifier Field of the Group 2
Message that the Slave consumes.
Refer to Table 17, page 48.
7 produced_connection_size 3*
—
8 consumed_connection_size 0
—
9
expected_packet_rate
0
Expected packet rate must be
configured.
12
watchdog_timeout_action
0
Transition to the
Timed Out
state.
13 produced_connection_path_
length
6 —
14 produced_connection_path ARRAY
of hex
USINTS
Default value is specified by the Poll
Response Setup Attribute (ID #6) in
the Device Configuration Object (see
page 71). See Table 31, page 63.
15 consumed_connection_path_
length
0 —
* For INT data assembly.
(Continued on next page)
Table 30: I/O Poll Messaging Instance Attributes (continued)
Attribute
Attribute Name
Default
Description
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