CAN-8124/CAN-8224/CAN-8424 User Manual
CAN-8124/ CAN-8224/ CAN-8424 User Manual (Version 2.0, Aug/2007)
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7.2 Examples of the DeviceNet communication set
7.2.1 Requests the use of the Predefined Master/Slave
Connection Set
An unconnected explicit messaging request sent by the Master node via a
destination node’s Group 2 Only Unconnected Explicit Request Message to
request the use of the Predefined Master/Slave Connection set. This example
is shows the user how to use it. In this demo, the Master establishes the
Explicit Message, Poll IO and Bit-Strobe IO connections.
The figure below shows the Group 2 Only Unconnected Explicit
connection Identifier Fields.
IDENTIFIER BITS
10 9 8 7 6 5 4 3 2 1
0
IDENTITY USAGE
HEX
RANGE
1 0
Source MAC ID
0 1 1
Slave’s Explicit/ Unconnected Response Messages
1 0
Destination MAC ID
1 1 0
Group 2 Only Unconnected Explicit Request
Messages
Note: CAN-8424: Node ID=0x09, Master node ID=0x0a
Master
(MAC
ID
=0x0A)
Slave
(MAC
ID
=0x09)
_ Group 2 Message
| _ Destination MAC ID=0x09
| | _ Message ID =6
| | | _ Frag=0. Transaction ID=0. Souce MAC ID= 0x0A
| | | | _ Service=Allocate_Master/Slave_Connection_Set Request
| | | | | _ Class ID=3
| | | | | | _ Instance ID=1
| | | | | | | _ Allocation Choice=Explicit, Polled & Bit Strobed
| | | | | | | | _ Allocator’s MAC ID=0x0A
ID=10 001001 110. Data= 0A 4B 03 01 07 0A
_ Group 2 Message
| _ Source MAC ID=0x09
| | _ Message ID =3
| | | _ Frag=0. Transaction ID=0. Souce MAC ID= 0x0A
| | | | _ Service=Allocate_Master/Slave_Connection_Set Response
| | | | | _Connection Message Body Format = DeviceNet (8/8)
| | | | | |
| | | | | |
| | | | | |
ID=10 001001 011. Data= 0A CB 00