COMMUNICATIONS GUIDE
DEVICENET PROTOCOL
469 MOTOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE
131
469 Specific Objects
I/O Data Input Mapping Object (class code A0h)
The class and instance attributes for the I/O data input mapping object (class code A0h)
are as follows:
Table 23: Acknowledge handler object, Class code 2Bh, Instance 01h, Attributes:
Attribute
Name/Description
Services
Default, Min, Max
Data type
01h
Acknowledge timer. The time
to wait for an acknowledge
before re-sending.
Get_Attribute_Single
16, 1, 65535
UINT
02h
Retry limit. This is the number
of acknowledge time-outs to
wait before informing the
application of a
retry_limit_reached event
Get_Attribute_Single
1, 0, 255
USINT
03h
COS producing connection
instance. This is the
connection instance which
contains the oath of the
producing I/O application
object which will be notified
of acknowledge handle
events.
Get_Attribute_Single
N/A
UINT
04h
ACK list size. This is the
maximum number of
members in the acknowledge
list.
0 = dynamic.
Get_Attribute_Single
05h
ACK list. List of active
connection instances which
are receiving acknowledges.
Get_Attribute_Single
N/A
Byte array of
USINT
06h
Data with ACK path list size.
Maximum number of
members in data with
acknowledge path list.
0 = dynamic.
Get_Attribute_Single
07h
Data with ACK path list. List of
connection instance /
consuming application object
pairs. This attribute is used to
forward data received with
acknowledgement.
Get_Attribute_Single
N/A
Byte array of
UINT, USINT;
Array of USINT
Table 24: I/O data input mapping object, Class code A0h, Attributes:
Attribute
Name/Description
Services
Default, Min, Max
Data type
1
Revision of the I/O data input
mapping handler object.
Get_Attribute_All
1, 1, 1
UINT
