41
System Configuration Using Water-resistant Terminals Section 2-4
2-4 System Configuration Using Water-resistant Terminals
Use 4-conductor VCTF cable for communications when Water-resistant Ter-
minals are used.
Wire the cables as shown below regardless of whether the system has a main
line distinguished from the branch lines or not.
Note Use VCTF cable for the external power supply. OMRON’s Connec-
tors with Cables can be used as well.
To connect Slaves other than the Water-resistant Terminals, use communica-
tions cable with no connectors and wire the cable with crimp terminals. If the
cable requires water resistance, use a commercially available terminal block
instead of T-joints.
Note When using 4-conductor VCTF Connector with Cable Assemblies, use one of
the following combinations of cable conductor colors and signals for stable
communications.
2-5 I/O Response Time Characteristics
This section explains the minimum and maximum I/O response times of the
CompoBus/S System. Use this section for reference when planning opera-
tions that require precise I/O timing.
The I/O response time is the time it takes from the reception of an input signal
at a CompoBus/S Input Slave to the output of the corresponding output signal
at a CompoBus/S Output Slave.
The information provided here, however, is only for when a Communications
Unit is used as the Master Unit. For details on using the SRM1 Master Control
Unit and CPM2C-S Series, refer to the CompoBus/S SRM1 Master Control
Units Operation Manual (W318) or CPM2C-S PLC Operation Manual (W377).
CompoBus/S Master Unit
Insulated
power
supply line
4-conductor
VCTF cable
Connector
assembly
(female)
Connector
assembly
(male)
Insulated
communica-
tions line
I/O device
4-conductor VCTF cable (0.75 mm
2
conductors)
VCTF cable
Shield
terminator (male)
T-joint
(See note.)
(See note.)
(See note.)
(See
note.)
(See
note.)
T-joint
T-joint
T-joint
T-joint
Connector
assembly
(female)
Connector
assembly
(female)
Connector
assembly
(female)
Connector
assembly
(female)
Connector assembly
(male)
Connector
assembly
(female)
Connector
assembly
(female)
Connector as-
sembly (male)
Connector
assembly
(male)
Connector
assembly
(female)
Connector
assembly
(female)
Connector
assembly
(male)
Communications
power supply
Watertight
Terminals
Connector
assembly
(male)
Connector
assembly
(male)
I/O power supply
Connector
assembly
(male)
Conductor
color
Signal
Pattern 1 Pattern 2 Pattern 3 Pattern 4
White BD H BS + BS – BD L
Red BS + BS – BD L BD H
Green BS – BD L BD H BS +
Black BD L BD H BS + BS –
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