Emerson FM-3 - Manual (Page 94)

80
FM-3 Programming Module Reference Manual
The following examples demonstrate how to determine which Selector.Selection will activate
based on the Selector.Select lines.
Example 1:
If Selector.Select2 is active, Selector.Select1 is inactive, and Selector.Select0 is active, then
the total binary value is as follows:
S
2
= 1, S
1
= 0, and S
0
= 1. Therefore,
Total Binary Value = (1 x 2
2
) + (0 x 2
1
) + (1 x 2
0
)
Total Binary Value = 4 + 0 + 1
Total Binary Value = 5
Therefore, when Selector.SelectorInitiate activates, then Selector.Selection5 will activate.
Example 2:
If Selector.Select2 is inactive, Selector.Select1 is active, and Selector.Select0 is active, then
the total binary value would be as follows:
S
2
= 0, S
1
= 1, and S
0
= 1. Therefore,
Total Binary Value = (0 x 2
2
) + (1 x 2
1
) + (1 x 2
0
)
Total Binary Value = 0 + 2 + 1
Total Binary Value = 3
Therefore, Selector.Selection3 would activate.
The Selector.Select lines can change without any action until the Selector.SelectorInitiate
destination is activated.
Selector.Selection sources can be tied to any destination in the Assignments view. Figure 48
shows the four selection lines being tied to Index 0 through Index 3 initiates. By doing this,
we could initiate up to four indexes with only two select lines and a selector initiate. This can
help minimize the number of inputs required to initiate a large number of indexes or
programs.