44
(6) Precautions for the number of mountable modules
Mount modules so that the total number of I/O points does not exceed the point range of the CPU module.
Modules can be mounted in any slot within the available range.
Even if the total number of slots of the main base unit and extension base units exceeds the number of available
slots (for example, even if six12-slot base units are used), no error occurs as long as modules are mounted within
the available range.
If a module is mounted exceeding the available range, "SP.UNIT LAY ERR." (error code: 2124) occurs.
Power supply
module
CPU module
Extension 1
Main base unit
Slot number
CPU 0 1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19 20 21 22 23
Extension 2
24 25 26 27 28 29 30 31 32 33 34 35
Extension 3
36 37 38 39 40 41 42 43 44 45 46 47
Extension 4
48 49 50 51 52 53 54 55 56 57 58 59
Extension 5
Prohibit
Prohibit
Prohibit
Prohibit
Prohibit
Prohibit
Prohibit
Prohibit
60 61 62 63
Extension base unit
Modules can be
installed.
Modules cannot be installed.
(Installing modules will result in error.)
Q312B
Q612B
Q612B
Q612B
Q612B
Q612B
When the GOT has been bus-
connected, one slot of extension
base 1 is used.
Also one GOT occupies 16 I/O
points.
When using the GOT, consider
the number of slots and the
number of I/O points.
Refer to the GOT Manual for
details of busconnecting the GOT.
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