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MELSEC-Q
5 ASSIGNMENT OF I/O NUMBERS
(c) Model name
Designate the model name of the mounted module with 16 or less
characters. High Performance model QCPU does not use the designated
model name. (It is used as a user's memo)
(d) Points (Used with High Performance model QCPU)
To change the number of occupied I/O points of each slot, select it from the
followings:
• 0 (0 point)
• 16 (16 points)
• 32 (32 points)
• 48 (48 points)
• 64 (64 points)
• 128 (128 points)
• 256 (256 points)
• 512 (512 points)
• 1024 (1024 points)
If the number of occupied I/O points is not designated for a slot, the one of
the actually mounted module is used.
(e) Start XY (Used with High Performance model QCPU)
1) When the I/O number of each slot is changed, you should designate
the head I/O number according to the change.
If Start XY is not designated for a slot, the I/O number continuing from
the last number of the currently designated slot is assigned.
2) Avoid the I/O number designation of each slot from overlapping the I/O
numbers assigned by High Performance model QCPU.
An error (SP. UNIT LAY ERR.) occurs when the I/O numbers overlap.
(2) Slot status after I/O assignment
When the I/O number is assigned to a slot, the assigned I/O number takes
priority regardless of the actual installation of a module.
(a) If the designated number of occupied I/O points is lower than that of the
actually mounted I/O module, some I/O points of the mounted module are
not used.
For example, if a slot where a 32-point input module is mounted is
designated for a 16-point input module, the latter 16 points of the 32-point
input module are disabled.
(b) If the designated number of occupied I/O points is higher than that of the
actually mounted I/O module, the points exceeding the points of the actually
mounted module are set as dummies.
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