Publication 1404-UM001D-EN-E - October 2004
C-18 Sample Applications
Refer to Devicenet Scanner Module Installation Instructions,
publication 1747-5.8, for a detailed description of all coding.
Word M0:1.224
A unique TXID (Transmit Identifier) and Command byte is needed for
this word. The valid command codes are:
• 1 = Execute transaction block
• 4 = Delete transaction from response queue
A command byte of 1 is used first to start the explicit message. After a
response has been received from the scanner, a command byte of 4 is
used to remove this transaction from the scanner. If the command
byte of 4 is not written to the SLC-500 DeviceNet Scanner, then it does
not process further transactions.
Table C.1
TXID cmd/status
Port Size
Service MAC ID
Class
Instance
Attributes
Table 3.B
TXID Cmd
TXID x 256 + Cmd
20 x 256 + 1
5121
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