Publication 1404-UM001D-EN-E - October 2004
Sample Applications C-19
Word M0:1.225
A port number and transaction body size is needed for this word. The
port number is the DeviceNet scanner port that handles this
transaction; an SLC-500 uses port 0 and the PLC-5 uses port 0 or 1.
The size is the number of bytes (2 bytes = 1 word) in the transaction
body which is 6 (6 bytes = 3 words).
Word M0:1.226
A service code and MAC ID is needed for this word. The service code
is the DeviceNet service that can be use on the Class 4 assembly
instances; the valid service codes are:
• 14 = Get_Attributes_Single
• 16 = Set_Attributes_Single
The MAC ID is the node number of the device that the DeviceNet
scanner is communicating to; this example uses node 5.
Word M0:1.227
The class number is the first word of the transaction body; class 4 is
used to retrieve the real-time data assemblies.
Table 3.C
Port Size
Port x 256 + Size
0 x 256 + 6
6
Table 3.D
Service MAC ID
Service x 256 + MAC ID
14 x 256 + 5
3589
Table 3.E
Class
4
Allen-Bradley HMIs
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