34
Each
Expansion I/O and Expansion CPU Rack is assigned a rack number from 1
through
7. Set
the rack number on the rack number switch. W
ords are allocated
to
Racks in order according to rack
numbers, starting from the CPU Rack, which
is always rack number 0.
Set
the rack
number switch using a standard screwdriver
. If a number other than
1
through 7 is assigned, or the same rack number is set to more than one Rack,
the PC will not operate
Note Turn OFF the power to the PC before setting the rack number switches.
Display The
display on the I/O Interface Unit is identical to that on the I/O
Control Unit on
the CPU Rack. For details on the data displayed in each mode, refer to
2-3-2 I/O
Control Unit
.
The
I/O Interface Unit CV500-II201 for Expansion I/O Racks provides a connec
-
tor for connecting a Peripheral Device. One Peripheral Device (CVSS or Pro-
gramming
Console) can be connected per to the CPU or I/O Interface Units for
each PC, although additional Peripheral Devices can be connected to Slave
Racks
if a SYSMAC
BUS/2 System is used. Whether mounted to the CPU or an
I/O Interface Unit, the operation of the Peripheral Device is the same.
Note When
connecting a Peripheral Device to the CPU or an I/O Interface Unit, set the
baud rate of the CPU to 50k bps via the CPU DIP switch.
2-3-4 Power Supply Units
The Power Supply Unit is available in three models. The CV500-PS221 and
CVM1-PA208
run on 100 to 120
V
AC or 200 to 240 V
AC, and the CV500-PS21
1
runs on 24 VDC. Both Power Supply Units can be used with any CPU Rack, Ex
-
pansion
CPU Rack, Expansion I/O Rack, or Remote I/O Slave Rack. The table
below summarizes the output capacity of the two models.
Model Supply voltage Output power
CVM1-PA208
100 to 120/200 to 240 V
AC
8 A at 5 VDC
CV500-PS221 12 A at 5 VDC
CV500-PS211 24 VDC 12 A at 5 VDC
Note The
total power consumed by each Rack must be within the values stated in the
table
above. For example, do not mount Units with a total current consumption
greater than 12 A to a Rack supplied by a 12-A Power Supply Unit.
Rack Number Switch
Peripheral Device
Connector
Rack Components Section 2-3
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