Rockwell Automation VSM500 Integrated Drive/Motor DeviceNet Option Board - Manual (Page 96)

D-4 VSM500 DeviceNet Option Board
Producer/Consumer Network: DeviceNet is a producer/consumer network. On
producer/consumer networks, packets are identified by content rather than by an
explicit destination. If a node needs the packet, it will accept the identifier and
consume the packet. The source therefore sends a packet once and all the nodes
consume the same packet if they need it. Data is therefore produced once, regardless
of the number of consumers. Also, precise synchronization is possible because data
arrives at each node at the same time
Reference/Feedback: The reference/feedback is used to send a reference (i.e.,
command speed) to the VSM500 unit and monitor its feedback (i.e. actual speed). The
size and definition of the reference/feedback depend on the assemblies that you are
using.
RSNetWorx for DeviceNet Software: RSNetWorx for DeviceNet software is tool for
configuring and monitoring DeviceNet networks and connected devices. It is a 32-bit
Windows application that runs on Windows 95, Windows 98, and Windows NT.
Scanner: A scanner is a separate module (of a multi-module controller) or a built-in
component (of a single-module controller) that provides communication with options
connected to a network. See also Controller.
UCMM (UnConnected Message Manager): UCMM is the use of explicit messages
that use the DeviceNet group 3 identifiers. They allow multiple devices to access the
VSM500 unit and DeviceNet option board at the same time.
VSM500 Integrated/Drive Motor: The VSM500 Integrated Drive/Motor is an AC drive
integrally mounted with an inverter duty motor. It consists of a drive section and a
motor section. It may be connected to a DeviceNet network with a DeviceNet option
board. In this manual, the VSM500 Integrated Drive/Motor is also referred to as
“VSM500 unit,” “drive,” or “unit.”
Zero Data: When communications are disrupted (e.g., a cable is disconnected), the
DeviceNet option board and VSM500 unit can respond with zero data. Zero data
results in the VSM500 unit receiving zero as values for logic command and speed
reference. This will stop the unit.