1.1 Table of Relays, Memory Areas and Constants
1-23
Relation of WX, WY, WR and WL to X, Y, R and L
WX, WY WR and WL correspond respectively to groups of 16 external input relay (X)
points, 16 external output relay (Y) points, 16 internal relay (R) points and 16 link relay
(L) points.
Example: Word external input relay (WX)
Each relay is composed of 16 external input relay (X) points as
shown below.
XFXE XDXCXBXA X9 X8 X7 X6 X5 X4 X3 X2 X1 X0
WX0
X1F X1E X1D X12 X11 X10
WX1
...
...
When the state of an external input relay (X) changes, the content
of WX also changes.
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