Mitsubishi Q2ACPU, User Manual

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5. I/O NUMBER ASSIGNMENT
The CPU module performs the following processing when I/O assignment is set.
1) Any of the following assignment can be performed per slot of each base unit.
2) The slots for which I/O assignment has been performed with GPP function,
the I/O assignment setting takes priority regardless of the loaded module.
• If a number of points fewer than the that of the loaded I/O module is set, the
actual number of points of the loaded I/O module is reduced.
For example, if the loaded module is a 32-point input module but I/O
assignment is set for a 16-point input module using GPP function, the latter
16 points for the input module cannot be used.
• If a number of points is greater than the that of the loaded I/O module is
set, the number of points in excess of the actual number of points is
occupied with dummy points.
• If the slot where an I/O module is loaded is set as a empty slot, the I/O
module will be unusable.
3) The slots for which I/O assignment is not performed using GPP function are
assigned with the number of points of the loaded module.
4) The slots for which I/O assignment is not performed using GPP function are
assigned I/O numbers that are consecutive to those of modules for which I/O
assignment has been performed.
(3) Precautions
(a) If there is a disparity between the I/O assignment made in the parameter settings
and the actually loaded I/O modules, the input and output is not normally
performed.
Assigned number of points
Empty slot Input module Output module
Special function
module
0 – – –
16 16 16 16
32 32 32 32
48 48 48 48
64 64 64 64
Loaded module I/O assignment Result
Input Output No input
Output Input No output
Input/Output Special CPU module error
Special Input/Output CPU module error