Terminating Resistors - Omron DEVICENET Operation Manual

Cables, Connectors, and Related Devices
Internal Circuitry
2-3-8

Terminating Resistors

60
(If two thick cables are connected, 8 A can be supplied to each cable for a
total of 16 A.)
Model
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
CN1
V− L S H V+
CN4
V+' H' S' L' V−'
CN2
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
(No model number) Terminating Resistor provided with T-branch Taps and Power
Supply Taps (121 Ω ±1%, 1/4 W)
Terminal-block Terminating Resistor (121 Ω ±1%, 1/4 W)
DRS1-T
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)
Remarks
Communications Power
Supply (24 V DC)
F1
CN3
F2
Remarks
Section 2-3
Pin Name
V− V−
L CAN L
S SHIELD
H CAN H
V+ V+