Allen-Bradley devicenet modules in logix5000 control systems Manual De Usuario
Publication DNET-UM004A-EN-P - March 2004
Control a Device 7-17
Define the Source or Destination Data
In general:
• Use the DINT data type for the source or destination tag, even
when you set or get less than 4 bytes.
• Make sure the source value stays within the minimum and
maximum values for the parameter that you are setting.
When setting a value, the CIP Generic MSG instruction takes only the
specified number of bits from the source tag.
specified number of bits from the source tag.
tag that controls the instruction
• Scope – controller
• Data type – MESSAGE
• The tag cannot be part of an array or a
• Data type – MESSAGE
• The tag cannot be part of an array or a
user-defined data type.
source or destination for the data that the
instruction sets or gets
instruction sets or gets
• Scope – controller
• Data type – In general, use the DINT
• Data type – In general, use the DINT
data type, even when you set or get
less than 4 bytes.
less than 4 bytes.
• Value – Make sure the source value
stays within the minimum and
maximum values for the parameter
that you are setting.
maximum values for the parameter
that you are setting.
number of bytes (only if setting a value)
MySource_1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
For example, if Source Length = 1 byte, then the CIP Generic MSG
instruction sends the first byte of MySource_1.