Rockwell Automation 1440-SDM02-01RA XM-124 Standard Dynamic Measurement Module - Manuel (Page 48)

48 Rockwell Automation Publication 1440-UM001C-EN-P - May 2014
Chapter 1 Install the XM-124 Standard Dynamic Measurement Module
signal levels that correspond to the 4 mA and 20 mA are configurable. Refer
to Alarm, Relay, and 4…20 mA Output Parameters on page 80 for details.
Wire the 4…20 mA outputs to the terminal base unit as shown in Figure 32 .
Figure 32 - 4…20 mA Output Connections
Serial Port Connection
The XM-124 module includes a serial port connection that lets you connect a
personal computer to it and configure the module’s parameters via the Serial
Configuration software utility.
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 7, 8, and 9, 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 personal
computer (no null modem is required).
Wire the DB-9 connector to the terminal block as shown.
ATTENTION: The 4…20 mA outputs are functionally isolated from
other circuits. We recommend that the outputs be grounded at a single
point. Connect the 4…20 mA (-) to the XM terminal base (chassis
terminal) or directly to the DIN rail, or ground the signal at the other
equipment in the 4…20 mA loop.
XM-124 Terminal Base Unit
(catalog number 1440-TB-A) DB-9 Female Connector
TX Terminal (terminal 7) ---------------------- Pin 2 (RD - receive data)
RX Terminal (terminal 8) ---------------------- Pin 3 (TD - transmit data)
RTN Terminal (terminal 9) --------------------- Pin 5 (SG - signal ground)
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