Omron CJ Series Operation Manual page 68

1 Introduction
Types of Cables
Flat Cable I is used in this example, because IP20 Bit Slave Units with e-CON connectors are used
and the communications power supply is provided collectively through the communications cables.
Application
Applicable Word Slave Units
Slave Units
Bit Slave
Units
Communications power supply
Condition to use different types of
cables together
Master Unit position
Branch lines
Multi-wiring Multidrop connections on
on branch branch lines
lines
Sub-branch lines
1-28
Item
Round Cable I
Wiring the Slave Units between the Master Unit and a Repeater Unit and wiring
the Slave Units downstream from a Repeater Unit
• To wire with
commercially
available cable.
• To supply com-
munications
power sepa-
rately.
• When Bit Slave
Units with
Prewired Flat
Cables are not
used.
Supported
IP20 Bit Slave
Units with e-
Note Round Cables cannot be used
CON Connec-
with Bit Slave Units with
tors
Prewired Flat Cables. This is
IP54 Bit
because Flat Cables are pre-
Slave Unit
connected to those Bit Slave
Units.
IP20 Bit Supported
Slave Units
with Small
Connectors
Wired separately
from the commu-
nications cable.
When a Repeater Unit is used, two different types of cables can be used (two of
Round Cable I, Round Cable II, Flat Cable I, and Flat Cable II): one for the
upstream port and the other for the downstream port.
In other cases, all cables on the trunk line, a sub-trunk line, a branch line, or a
sub-branch line must be the same type.
Only at the end of
trunk line
At 4 Mbps: Not
supported
At other baud
rates: Supported
At 1.5 Mbps: Sup-
ported (up to 3 con-
nectors per branch
line)
Not supported
CJ-series CompoNet Master Unit Operation Manual for NJ-series CPU Unit (Cat. No. W493)
Cable type
Round Cable II
• To wire with • To use the com-
commercially munications
available cable cable and the
communica-
• To supply the
tions power to
communica-
supply power to
tions power col-
all Slave Units.
lectively via the
communica- • When an IP20
tions cable. Bit Slave Unit
with an e-CON
• When Bit Slave
connector is
Units with
used.
Prewired Flat
Cables are not
used.
Not supported Supported
Not supported
Supplied via communications cable. (Power is supplied from
the Master Unit and Repeater Units.)
At baud rate of 93.75 kbps: Anywhere in the network
At other baud rates: Only at the end of trunk line
At 93.75 kbps: Unrestricted wiring
At 4 Mbps: Not supported
At other baud rates: Supported
At 93.75 kbps: Unrestricted wiring
At 1.5 Mbps: Supported (up to 3 con-
nectors per branch line)
At 93.75 kbps: Unrestricted wiring
At 1.5 Mbps: supported (up to 3 connectors per branch line)
Flat Cable I Flat Cable II
• To use the com-
munications
cable and the
communica-
tions power to
supply power to
all Slave Units.
• When an IP54
Bit Slave Unit is
used.
• To use in an
environment
conforming to
IP54 (splash-
proof and drip-
proof.)
Not supported
Supported
Not supported