7BChapter Four: Operation 74BConnection Object
61
Explicit Messaging Instance Attributes
Table 29: Explicit Messaging Instance Attributes
Attribute
ID # (dec) Attribute Name
Default
Value Description
1 state 03 Indicates the Explicit Messaging is in
the Established state.
2 instance_type 00 Indicates this is an Explicit
Messaging Connection.
3 transportClass_trigger 83
hex
Server/Transport Class 3
4 produced_connection_id — Refer to the Slave’s Explicit
Response Message in Table 17, page
48.
5 consumed_connection_id — Refer to the Master’s Explicit Request
Message in Table 17, page 48.
6 initial_comm_characteristics 21
hex
Indicates that (1) the Slave’s Explicit
Messaging Connection produces and
consumes across Message Group 2,
and (2) the Slave’s Node Address
appears in the CAN Identifier Fields
of the Group 2 Messages that the
Slave consumes and produces. Refer
to Table 17, page 48.
7 produced_connection_size 3C
hex
—
8 consumed_connection_size 3C
hex
—
9 expected_packet_rate 09C4
hex
2500 milliseconds. Refer to [1].
12 watchdog_timeout_action 1 Auto_Delete as described in [1]. This
attribute is settable to Deferred Delete
as described in [1].
13 produced_connection_path_
length
0 Refer to [1].
14 produced_connection_path Empty Refer to [1].
15 consumed_connection_path_
length
0 Refer to [1].
16 consumed_connection_path Empty Refer to [1].
17 production_inhibit_time 0 Default is no inhibit time.
* Refer to the ODVA “DeviceNet Specification,” Volume II [2], for information on User and
Calibration Mode access.
I/O Poll Messaging Instance Attributes
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