Mitsubishi Q00JCPU User Manual page 217

4
I/O NUMBER ASSIGNMENT
(2) Precautions for I/O assignment
(a) Slot status after I/O assignment
Input module
Output module
Input / Output conposite module
Intelligent function module
Empty slot
All modules
Other combinations
When I/O assignment setting has been made to a slot, that setting has
precedence over the mounted module.
1) When the preset number of points is less than the number of I/O points
of modules actually mounted
The I/O points for actually mounted modules are decreased.
For example, when a slot, to which a 32-point input module is installed, is set
to a 16-point input module in I/O assignment setting, the second half 16 points
of the 32-point input module becomes invalid.
2) When the preset number of points is less than the number of mounted
intelligent function module points
An error (SP.UNIT LAY ERR.) occurs.
3) When the preset number of points is greater than the number of I/O
points of modules actually mounted
The points in excess of the mounted module points are not used by the I/O
module.
4) Mounted module and I/O assigned module type
The mounted module type and the set type in the I/O assignment setting must
be the same.
If not, normal operation will not be performed.
For the intelligent function module, make sure that the numbers of I/O points
are the same.
Table4.4 describes the operations performed when the mounted module type
differs from the one in the I/O assignment setting.
Table4.4 List of operations performed when mounted module differs from I/O assignment
Mounted module
4.7.2 Concept of I/O assignment using GX Developer
I/O assignment
setting
Intelli. / Interrupt Error(SP.UNIT.LAY.ERR.)
Input / Hi. input
Error(SP.UNIT.LAY.ERR.)
Output / I/O mix
Input / Hi. input
Output / I/O mix Empty slot
Intelli. / Interrupt
Empty Empty slot
Error does not occur but
normal operation is not
performed.
4.7 I/O Assignment Using GX Developer
1
2
3
4
5
Result
6
7
8
4
- 27