Mitsubishi Q00JCPU User Manual page 177

4
I/O NUMBER ASSIGNMENT
(b) Precautions for automatic start XY assignment by CPU module
When the start XY is not yet entered, the CPU module automatically assigns it. In
the case of 1) or 2) below, therefore, the start XY setting of each slot may overlap
the one assigned by the CPU module.
1) Settings of I/O numbers were exchanged in the start XY
2) There are slots with start XY setting and those without start XY setting
(automatically assigned slot)
The following example Diagram 4.22 shows overlapping start XY.
Diagram 4.22 I/O assignment with overlapping start XY
Diagram 4.23 Start XY set by above I/O assignment
Be extremely careful not to overlap the start XY of each slot.
Overlapping start XY will result in an error ("SP. UNIT LAY ERR.").
4.7.2 Concept of I/O assignment using GX Developer
Automatically
assigned slot
0 1 2 Slot number
32 32 32
points points points
Number of I/O points
X40 X20 X40
I/O number
X5F X3F X5F
Start XY overlaps!
4.7 I/O Assignment by GX Developer
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