Mitsubishi Electric MELSEC-Q Series User Manual page 78

5 ASSIGNMENT OF I/O NUMBERS
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(c) Model name
Designate the model name of the installed module with 16 or less
characters. Basic model QCPU does not use the designated model name. (It
is used as a user's memo or for parameter printing.)
(d) Points (Used with Basic model QCPU)
To change the number of 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)
If the number of I/O points is not designated for a slot, the one of the
actually installed module is used.
: Setting is enabled for the Q00/Q01CPU only.
(Since the number of I/O points of the Q00JCPU is 256, you cannot set
512/1024 points.)
(e) Start XY (Used with Basic 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 Basic 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
precedence regardless of the actual installation of a module.
(a) If the designated number of I/O points is smaller than that of the actually
installed input/output module, some I/O points of the installed module are
not used.
For example, if a slot where a 32-point input module is installed 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 I/O points is larger than that of the actually
installed input/output module, the points exceeding the points of the actually
installed module are set as dummies.
(c) Be sure to set the same module type for the installed module and the I/O
assignment.
If the module type of the I/O assignment is different from that of the actually
installed module, a malfunction may result.
For the intelligent function module, make sure that the numbers of I/O
points are the same.
• 128 (128 points)
• 256 (256 points)
• 512 (512 points)
• 1024 (1024 points)
MELSEC-Q
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