Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 305)

Publication 1404-UM001F-EN-P - November 2009 305
Sample Applications Appendix C
Multiple Data Table Reads
by Using DeviceNet The following is a ladder program designed to return a number of
real-time data tables from a power monitor to an SLC 500 processor
via DeviceNet by using a DeviceNet scanner module. The following
example and ladder diagram uses these settings:
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Node (MAC ID) = 5
•
Port = 0
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Class = 4
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Instance = 14, 16, 18, 20, 22, 17, 25
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Attribute = 3
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Command = 1, 4
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Size 3
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Size = 3
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Service = 14
Explicit Message Transfer Setup
The Explicit Message Transfer Block header for this example is
assembled in integer file N10:0. The header contains the information
for all aspects of the transmission request. Each different node or
instance requires assembling another file. Each file has to be moved in
turn to the output M0 file starting at word 224.
Refer to Devicenet Scanner Module Installation Instructions,
publication 1747-IN058, for a detailed description of all coding.
Word M0:1.224
A unique TXID (Transmit Identifier) and Command byte is needed for
this word. These are the valid command codes.
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1 = Execute transaction block
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4 = Delete transaction from response queue
Explicit Message Transfer Block
TXID cmd/status
Port Size
Service MAC ID
Class
Instance
Attributes