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'
S
V
−
V+
H'
V+'
V+
H
S
L
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)
Summary of Contents for DEVICENET -
Page 1: ...DeviceNet Cat No W267 E1 11 OPERATION MANUAL...
Page 2: ...DeviceNet Operation Manual Revised April 2008...
Page 3: ...iv...
Page 5: ...vi...
Page 7: ...viii...
Page 9: ...x...
Page 13: ...xiv...
Page 41: ...20 Basic Operating Procedures Section 1 4...
Page 107: ...86 Operational Checklist Section 2 6...
Page 123: ...102 Step 3 Splitting the System into Multiple Power Supplies Section 3 6...
Page 161: ...140 Index...