Rockwell Automation 1440-RMA00-04RC XM-440 Master Relay Module - Manual (Page 33)

Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Installing the XM-440 Master Relay Module 33
A single switch contact can also be shared by multiple XM modules wired in
parallel as shown in Figure 2.14.
Figure 2.14 Typical Multiple XM Modules Remote Relay Reset Signal Connection
PC Serial Port Connection
The XM-440 includes a serial port connection that allows you to connect a PC
to it and configure the module’s parameters. There are two methods of
connecting an external device to the module’s serial port.
• Terminal Base Unit - There are three terminals on the terminal base
unit you can use for the serial port connection. They are TxD, RxD, and
RTN (terminals 16, 34, and 17, respectively). If these three terminals are
wired to a DB-9 female connector, then a standard RS-232 serial cable
with 9-pin (DB-9) connectors can be used to connect the module to a
PC (no null modem is required).
The DB-9 connector should be wired to the terminal base unit as
follows.
ATTENTION
The relay reset connections may be different for different
XM modules. Figure 2.14 applies only to the XM-440
module. Refer to the installation instructions for the
module for its terminal assignments.
XM-440 Terminal Base Unit
(Cat. No. 1440-TB-C) DB-9 Female Connector
TX Terminal (terminal 16) ---------------------- Pin 2 (RD - receive data)
RX Terminal (terminal 34) ---------------------- Pin 3 (TD - transmit data)
RTN Terminal (terminal 17) --------------------- Pin 5 (SG - signal ground)