38
Unit Numbers and I/O Word Allocation
Section 3-2
The following example shows the maximum number of C500 Slaves that can
be connected to a C200H Master. Note that a C200H Slave could be con-
nected to this System, either to another Master or in the present Master Sub-
system, to bring the total number of Slaves controlled by the PC to 5 (C500
Slaves count as 2).
IR 4
IR 3
IR 2
Set to Unit #0 or Unit #1.
IR 0
C200H
Master
C200H CPU Rack
C500 Slave
C500 Slave
16 pts.
32 pts.
32 pts.
16 pts.
IR 55
No Unit mounted.
IR 53 & 54
IR 51 & 52
IR 50
64 pts.
16 pts.
16 pts.
IR 72, 73, 74, & 75
IR 71
IR 70
Set to Unit #2 and as
terminator.
Set to
Unit #0.
When C200H Slaves are attached to C500 Masters mounted on a C-Series
PC, the normal limits for the number of various Units controllable from the PC
apply (see 2-1 Basic System). Here the type of Master setting on the C200H
Slaves must designate a Master other than C200H. Word allocations will be
according to the C500 System, i.e., not according to slot words, but left to
right to actually mounted I/O Units. Special I/O Units cannot be mounted to
C200H Slave Racks connected to a C500 Master.
Example
C500 Masters and C200H
Slaves
