Rockwell Automation 1440-RMA00-04RC XM-440 Master Relay Module - Manual (Page 91)

Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Glossary 91
MAC ID
See node address.
master device
A device which controls one or more slave devices. The XM-440 Master Relay
module is a master device.
node address
A DeviceNet network can have as many as 64 devices connected to it. Each
device on the network must have a unique node address between 0 and 63.
Node address 63 is the default used by uncommissioned devices. Node
address is sometimes called "MAC ID."
NVS (Non-Volatile Storage)
NVS is the permanent memory of an XM module. Modules store parameters
and other information in NVS so that they are not lost when the module loses
power (unless Auto Save is disabled). NVS is sometimes called "EEPROM."
online help
Online help allows you to get help for your program on the computer screen
by pressing F1. The help that appears in the Help window is context sensitive,
which means that the help is related to what you are currently doing in the
program.
Polled
DeviceNet communications method in which the XM module sends data in
response to a poll request from a master device.
Program mode
The XM module is idle. Typically this occurs when the module configuration
settings are being updated with the XM Configuration program. In Program
mode, the XM-440 closes I/O connections, stops monitoring the alarms from
the XM measurement modules, and the relays are deactivated unless they are
latched.
Run mode
In Run mode, the XM-440 module establishes I/O connections with the XM
measurement modules in its scan list and monitors their alarms, and controls
its own relay outputs accordingly.