Omron CS1W-CRM21 - Allocating Slave Units in the CPU Unit Memory Area by Communications Mode Number

12
CompoNet Network Specifications Section 1-2
1-2-3 Allocating Slave Units in the CPU Unit Memory Area by
Communications Mode Number
Slave Unit I/O information and status information is allocated in the Special
I/O Unit memory area or a user-specified area of the CPU Unit to which the
Master Unit is mounted.
The area is determined by the unit number of the Master Unit as a Special I/O
Unit and by the communications mode number. The user specifies the com-
munications mode number using the CX-Integrator. The bits used by Slave
Units are determined by the node address for each Slave Unit.
The relationship between communications mode numbers, the number of
connected nodes, and the number of points that can be controlled is
described next.
Number of Connected Nodes and Control Points Per Master Unit
Use the rotary switch on the front of the Master Unit to select the communica-
tions mode number.
2 3
4
5
6
7 8
9
0
Word: 16 nodes
Reserved
1
Word: 32 nodes
Word: 64 nodes
Word: 32 nodes + Bit: 128 nodes
Software Setting Mode
Reserved
Reserved
MODE
Commu-
nications
mode
number
Mode
name
Connectable node
addresses
Control points Memory area
Number of
unit numbers
used by each
Master Unit
0 Mode 0 Word Slave Units: IN0 to
IN7 and OUT0 to OUT7
128 inputs and 128 out-
puts (Word Slave Units)
Special I/O Unit Area
(First word depends on
unit number of Master
Unit.)
2
1 Mode 1 Word Slave Units: IN0 to
IN15 and OUT0 to OUT15
256 inputs and 256 out-
puts (Word Slave Units)
4
2 Mode 2 Word Slave Units: IN0 to
IN31 and OUT0 to OUT31
512 inputs and 512 out-
puts (Word Slave Units)
8
3 Mode 3 Word Slave Units: IN0 to
IN15 and OUT0 to OUT15
Bit Slave Units: IN0 to
IN63 and OUT0 to OUT63
256 inputs and 256 out-
puts (Word Slave Units)
128 inputs and 128 out-
puts (Word Slave Units)
8
4 Reserved --- --- --- ---
5 Reserved --- --- --- ---
6 Reserved --- --- --- ---
7 Reserved --- --- --- ---
8 Software
Setting
Mode
Can be set within the fol-
lowing 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 Area.
Note Status and
parameters are
allocated in the
Special I/O Unit
Area.
1
9 Reserved --- --- --- ---