I-7242D user manual
I-7242D DeviceNet/Modbus RTU Gateway User’s Manual, July 2006, Version 1.1 84/124
7.2.6 Change MAC ID example
If necessarily, users can change MAC ID of I-7242D. For example, the
I-7242D sends “Duplicate MAC ID Check Message” at power on or reset mode.
There could be the same ID of device in the network. Therefore, the I-7242D
supports the ability of on-line change the MAC ID of CAN. Please refer to the
following example.
Note: Slave (I-7242D): Node ID=0x09, Master: Node ID=0x0A
1. Request the use of the Predefined Master/Slave Connection set
Allociation Choice : Explicit
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
| | | | | | | | _ Allocator’s MAC ID=0x0A
ID=10 000011 110. Data= 0A 4B 03 01
01
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 000011 110. Data= 0A CB 00