Rockwell Automation 1440-RMA00-04RC XM-440 Master Relay Module - Manual (Page 92)

Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
92 Glossary
slave device
A device that receives and responds to messages from a Master device but
does not initiate communication. Slave devices include the XM measurement
modules, such as the XM-120 Dynamic Measurement module and the XM-320
Position module.
transducer
A transducer is a device for making measurements. These include
accelerometers, velocity pickups, displacement probes, and temperature
sensors.
trend
A set of records of one or more measurement parameter(s) collected at regular
intervals of a base parameter such as time.
trigger
An event that prompts the collection of trend data.
triggered trend
A time-based trend that is collected in an XM module when a relay on the XM
module is activated, or when the module receives a trigger event.
trigger group
A group of XM measurement modules defined from a Node List in an
XM-440 Master Relay module. When the selected XM-440 relays are activated,
the XM-440 sends a trigger event to the modules in the group, causing them to
collect their triggered trend data.
virtual relay
A virtual relay is a non-physical relay. It has the same capabilities (monitor
alarms, activation delay, change status) as a physical relay only without any
physical or electrical output. The virtual relay provides additional relay status
inputs to a controller, PLC, or an XM-440 Master Relay module (firmware
revision 5.0 and later).
XM configuration
XM configuration is a collection of user-defined parameters for XM modules.