Rockwell Automation 1440-TBS-J XM Dynamic Measurement Module Terminal Base - Manual (Page 11)

XM Dynamic Measurement Module Terminal Base 11
Publication ICM-IN003D-EN-P - March 2013
Terminating Resistors
The XM Bus operates correctly when there is a terminating resistor at each
end of the XM Bus:
• Terminating resistors must be 121Ω, 1%, 1/4 W.
• When installing the XM ControlNet adapter with XM modules, the
ControlNet adapter has an internal terminating resistor. The other
terminating resistor must be installed at the opposite end of the bus.
A second terminating resistor is installed across the CAN_High and
CAN_Low terminals of the XM module at the other end of the XM
Bus.
Refer to Terminal Assignments on page 16 .
31865
24 V
24 V COM
Supply
XM ®
XM ®
24 V COM
24 V
1 1
1 1
1
1 1
CAN HIGH
BUS V -
DRAIN WIRE
CAN LOW
Termination
resistor
121 ohm, 1%,
1/4W
Class 2