I-7242D user manual
I-7242D DeviceNet/Modbus RTU Gateway User’s Manual, July 2006, Version 1.1 73/124
7.2
Examples on the DeviceNet Communication Set
7.2.1 Request the use of 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
requests the use of the Predefined Master/Slave Connection set. The example
shows how to use these connection sets. In this demo, the Master establishes
the Explicit Message, Poll IO and Bit-Strobe IO connections.
Table 7-3 shows the Group 2 Only Unconnected Explicit connection
Identifier Fields.
Table 7-3 Identifier fields of the group 2 only unconnected explicit connection
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: Slave (I-7242D): Node ID=0x09, Master: Node ID=0x0A
Allociation Choice : Explicit
、
Polled & Bit-Strobed
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. Destination MAC ID= 0x0A
| | | | _ Service=Allocate_Master/Slave_Connection_Set Response
| | | | | _Connection Message Body Format = DeviceNet (8/8)
| | | | | |
| | | | | |
| | | | | |
ID=10 001001 110. Data= 0A CB 00
