60
Cables, Connectors, and Related Devices Section 2-3
(If two thick cables are connected, 8 A can be supplied to each cable for a
total of 16 A.)
Internal Circuitry
2-3-8 Terminating Resistors
In a DeviceNet Network, one Terminating Resistor must be connected to each
end of the trunk line. If a Unit is at the end of the trunk line, connect one of the
Terminating Resistors listed in the following table because the Units do not
have built-in terminators.
There are several ways to connect a Terminating Resistor. A special Terminal-
block Terminating Resistor can be connected, a resistor can be installed in the
Terminating Resistor socket of a T-branch Tap or Power Supply Tap, or a
shielded connector with terminating resistance can be connected to a T-
branch Connector. A Terminating Resistor is provided with T-branch Taps and
Power Supply Taps. If a resistor is to be installed on a T-branch Tap or Power
Supply Tap, always use the provided Terminating Resistor.
Model Remarks
DCN1-1P Includes two XW4B-05C1-H1-D Straight Connectors with attachment
screws, a terminator (attach if needed), fuses, and a ground terminal.
Communications
Connectors
Communications Power
Supply (24 V DC)
Pin
V−
L
S
H
V+
Name
V−
CAN L
SHIELD
CAN H
V+
CN2
CN3
F2
F1
CN1
V−'L'S'
SV−V+
H'V+'
V+HSL
CN4
V−
Model Remarks
(No model number) Terminating Resistor provided with T-branch Taps and Power
Supply Taps (121 Ω ±1%, 1/4 W)
DRS1-T Terminal-block Terminating Resistor (121 Ω ±1%, 1/4 W)
DRS2-1 Shielded Micro-size (M12) Connector with Terminating Resis-
tance (male plug)
DRS2-2 Shielded Micro-size (M12) Connector with Terminating Resis-
tance (female socket)
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