Rockwell Automation 1440-VLF02-01RA XM-121 Absolute Shaft Module - Manual (Page 43)

Publication GMSI10-UM014D-EN-P - May 2010
Installing the Absolute Shaft Module 35
• Mini-Connector - The mini-connector is located on top of the module,
as shown in Figure 2.23.
Figure 2.23 Mini-Connector
A special cable (Cat. No. 1440-SCDB9FXM2) is required for this
connection. The connector that inserts into the PC is a DB-9 female
connector, and the connector that inserts into the module is a USB
Mini-B male connector.
DeviceNet Connection
The XM-121 includes a DeviceNet™ connection that allows the module to
communicate with a programmable controller, DCS, or another XM module.
DeviceNet is an open, global, industry-standard communications network
designed to provide an interface through a single cable from a programmable
controller to a smart device such as the XM-121. As multiple XM modules are
interconnected, DeviceNet also serves as the communication bus and protocol
that efficiently transfers data between the XM modules.
mini-connector
WARNING
If you connect or disconnect the serial cable with power
applied to the module or the serial device on the other end
of the cable, an electrical arc can occur. This could cause an
explosion in hazardous location installations. Be sure that
power is removed or the area is nonhazardous before
proceeding.
IMPORTANT
If 24V Common is not referenced to earth ground, we
recommend you use an RS-232 isolator, such as Phoenix
PSM-ME-RS232/RS232-P (Cat. No. 1440-ISO-232-24), to
protect both the XM module and the computer.