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Allocations to Slave Units Section 5-2
5-2 Allocations to Slave Units
This section describes how Slave Unit I/O is allocated in the I/O Memory of
the CPU Unit under which the CompoNet Master Unit is mounted.
5-2-1 Overview
Portions of the Special I/O Unit Area or an area set using the CX-Integrator in
the CPU Unit under which the Master Unit is mounted are allocated to Slave
Unit I/O information and status information.
The words that are allocated are determined by the unit number of the Master
Unit as a Special I/O Unit and the communications mode number (or accord-
ing to software settings made using the CX-Integrator when communications
mode 8 is set), and the bits used by each Slave Unit are determined by the
node address set for the Slave Units and by the number of points used by the
Slave Units.
5-2-2 I/O Memory Area Allocations by Communications Mode Number
Set the communications mode number according to the number of Slave
Units connected (Word and Bit Slave Units) and the number of control points.
Set 0 to 3 or 8 on the rotary switch on the front of the CompoNet Master Unit.
2 3
4
5
6
7 8
9
0
1
MODE
16 word nodes
Reserved
Reserved
Reserved
Software Setting Mode
32 word nodes +
128 bit nodes
32 word nodes
64 word nodes
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