Filter
Top Products
83
ICC
Figure 91: Configure AC/DC Drive Profile AOI
11) The program is now complete.
12) Save, download and run the program.
13.2.7 Explicit Messaging Tag Reference
When class 3 (explicit messaging) connections are used, register contents are read
from and written to the interface card via EtherNet/IP by reference to “tag names”.
Tags are read via the EtherNet/IP “data table read” service, and tags are written via
the EtherNet/IP “data table write” service. Different tags exist for reading vs. writing.
Any given register can be accessed with its own unique tag name, or an array tag
can be used to access a group of registers with one PLC instruction. Tag names are
generated according to the following structure:
[action prefix][_reg_][register number]
Where
[action prefix] is a 2-character field, and is equal to either “rd” for read tags, or “wr”
for write tags. Although commonly followed for naming clarity, this “read vs. write”
naming convention is not strictly enforced by the interface card, however: it is