Instruction manual

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15.7.4 Ethernet/IP Port Configuration
The Ethernet/IP port has the following configuration parameters:
• Enable/Disable
: Enables or disables this protocol.
• Produced/Consumed Assembly Member Lists
: These arrays allow the
creation of custom-built assembly instances. Each box in the array is
capable of containing a point number. Because the “value” attributes of
each point are 16-bit data elements, each box represents two bytes of
consumed or produced data.
Up to 100 points can be assigned to each member list (for a total of 200
bytes of produced and/or consumed data). The array locations are
numbered 0-99, and traverse from left to right across each row, and then
increment to the left-most position on the next row. Clicking on a box in an
array toggles the point that will be referenced when class 1 connected data
is produced or consumed at that corresponding location. A blank array
entry indicates that no point is referenced at that location, which will cause
corresponding consumed data to be ignored and produced data to be a
default value of 0.
As an example, looking at the member list definitions shown in Figure 24,
we can see that each member list contains 6 defined points. Therefore, up
to 12 “meaningful” bytes of data can be both consumed and produced via
class 1 connected messages (the qualifier “meaningful” is used here
because a client may configure a class 1 connection that indicates larger
produced and/or consumed data sizes, but all unreferenced consumed
data (data after byte #12) will be ignored, and all unreferenced produced
data (also data after byte #12) will be dummy “0” values). The first word
(two bytes) of consumed data will be written to the “value” attribute of point
#3, the next two bytes to point #4 and so on. If points #3 and #4 etc. have
a “Source Port” selection defined, then this command data will
subsequently also propagate to that port and down to the point’s
configured remote device.
This example works similarly when describing the behavior of the produced
member list in Figure 24. In this case, the first 2 bytes of the produced
data will be the value of point #1, the next two bytes will be the value of
point #2 and so on.
15.8 Point Configuration
The ETH-200 supports 100 total points. The configuration of these points
determines what data is available from attached network devices. Points are
configured using the interface shown in Figure 25.