User`s manual

Western Reserve Controls WRC-CANR-DF-DN User’s Manual
PUB 14.1
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in a trunk line, it must be terminated on side A. A terminating resistor is built into the CANR-DF, so that an
external resistor should not be added.
Drop line use:
When CANR-DF is used in a drop line line (the Network A side is toward the main trunk), the
Network A connection is not terminated. The user must remove the built-in terminator by clipping it out of
the circuit.
Some specifications for the terminating resistor are:
Table 4-8 Terminating Resistors
DeviceNet SDS
121 ohm 120 ohm
1% metal film 2%
1/4 watt 1/4 watt
Important: Per the DeviceNet and SDS specs -- do not terminate devices on drop lines.
CLIP HERE.
R19
Figure 4-4 Location of Terminating Resistor on Network Side A
4.5.3. CAN-Bus Connection Wiring
The CANR-DF uses the round, mini-style connector on the copper side A and standard ST
connectors on the fiber side B.