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Master Unit Specifications Section 2-1
2-1-4 Switch Settings
Unit Number
Switches (MACH No.)
Special I/O Unit unit number setting: Two decimal rotary switches (0 to 99)
This setting is read when the power supply is turned ON to the PLC.
MODE Switch Master Unit communications mode number setting: One decimal rotary switch
(0 to 9)
This setting is read when the power supply is turned ON to the PLC.
Note (1) In a CompoNet Network, Word Slave Units have 16 bits per node ad-
dress.
(2) Do not set the reserved communications mode numbers (4 to 7 and 9). A
communications mode setting error (H4 at the 7-segment LED indicator)
will occur if any of these modes is set.
Commu-
nications
mode No.
Name Connectable node
addresses
Control points Memory areas Number of
unit numbers
used per
Master Unit
Settable
range
0 Communica-
tions mode
No. 0
Word Slave Units:
IN0 to IN7 and OUT0
to OUT7
Word Slave Units: 128
inputs and 128 outputs
Special I/O Unit Area
(First word depends on
unit number of Master
Unit.)
2 00 to 94
1 Communica-
tions mode
No. 1
Word Slave Units:
IN0 to IN15 and
OUT0 to OUT15
Word Slave Units: 256
inputs and 256 outputs
4 00 to 92
2 Communica-
tions mode
No. 2
Word Slave Units:
IN0 to IN31 and
OUT0 to OUT31
Word Slave Units: 512
inputs and 512 outputs
8 00 to 88
3 Communica-
tions mode
No. 3
Word Slave Units:
IN0 to IN15 and
OUT0 to OUT15
Bit Slave Units: IN0 to
IN63 and OUT0 to
OUT63
Word Slave Units: 256
inputs and 256 outputs
Bit Slave Units: 128
inputs and 128 outputs
8 00 to 88
4 Reserved --- --- --- --- ---
5 Reserved --- --- --- --- ---
6 Reserved --- --- --- --- ---
7 Reserved --- --- --- --- ---
8 Software
Setting Mode
Can be set within the
following ranges:
Word Slave Units:
IN0 to IN63 and
OUT0 to OUT63
Bit Slave Units: IN0 to
IN127 and OUT0 to
OUT127
Can be set within the fol-
lowing ranges:
Word Slave Units: 1,024
inputs and 1,024 outputs
Bit Slave Units: 256
inputs and 256 outputs
Can be allocated any-
where in the CIO, DM,
WR, or HR Areas.
Note Status and
parameters are
allocated in the
Special I/O Unit
Area.
1 00 to 95
9 Reserved --- --- --- --- ---
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