Rockwell Automation 1440-TTC06-00RE XM-362 Temperature Module - Manual (Page 47)

Publication GMSI10-UM008D-EN-P - August 2010
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PC Serial Port Connection
The XM-361 and XM-362 include a serial connection that allows you to
connect a PC to it and configure the module’s parameters. The connection is
through a mini-connector that is located on top of the module, as shown in
Figure 2.33.
Figure 2.33 Mini-Connector
IMPORTANT
When using grounded and/or exposed thermocouples that
are touching electrically conductive material, the ground
potential between any two channels cannot exceed +250
Volts. Exceeding this voltage could cause permanent
damage.
IMPORTANT
Inside the XM-361 and XM-362 terminal bases are cold
junction sensors used to determine the thermocouple
measurements. These sensors have intelligent diagnostics
that can determine cold junction out-of-range (OOR)
conditions and hardware failures.
A cold junction OOR condition can be monitored in the
configuration software (Cold Junction Status in XM
Serial Configuration Utility and Cold Junction
Overrange/Underrange in EDS file). It also sets bit 8
(Minor Recoverable Fault) of the Identity Object Status
Attribute.
A hardware failure at one of the cold junction sensor sets
bit 9 (Minor Unrecoverable Fault) of the Identity Object
Status Attribute. The faulted sensor and its value will be
ignored. The nearest remaining sensor’s value will be used
instead.
For more information on the Identity Object Status
Attribute, refer to the Identity Object on page 84.
mini-connector