Rockwell Automation 20-750-BNETIP BACnet/IP Option Module - Manual (Page 80)

80 Rockwell Automation Publication 750COM-UM005B-EN-P - June 2014
Glossary
Logic Command/Logic Status The Logic Command is used to control the PowerFlex 750-Series drive (for
example, start, stop, and direction). BACnet objects can be used to control the
parameters of a PowerFlex 750-Series drive. For example, BV10 is used to change
the operating state (RUN/STOP) of the drive. For a definition of BACnet
objects, see
Chapter 4 .
The Logic Status is used to monitor the PowerFlex 750-Series drive (for example,
operating state and motor direction). BACnet objects can be used to monitor the
parameters of a PowerFlex 750-Series drive. For example, BV0 is used to monitor
the operating state (RUN Ready) of the drive. For a definition of BACnet
objects, see
Chapter 4 .
NVS (Nonvolatile Storage) NVS is the permanent memory of a device. Devices such as the option module
and drive store parameters and other information in NVS so that they are not lost
when the device loses power. NVS is sometimes called ‘EEPROM’.
Option Module Devices such as drives, controllers, and computers usually require a network
communication option module to provide a communication interface between
them and a network such as BACnet/IP. An option module reads data on the
network and transmits it to the connected device. It also reads data in the device
and transmits it to the network.
The 20-750-BNETIP BACnet/IP option module connects PowerFlex 750-
Series drives to a BACnet network. Option modules are sometimes also called
‘adapters’, ‘cards’, ‘embedded communication options’, or ‘peripherals’. On
PowerFlex 750-Series drives, option modules can also be I/O modules, encoder
modules, safety modules, and so forth.
PCCC (Programmable Controller
Communications Command)
PCCC is the protocol used by some controllers to communicate with devices on
a network. Some software products (for example, DriveExplorer and
DriveExecutive software) also use PCCC to communicate.
Ping A message that is sent by a DPI product to its peripheral devices. Pings are used to
gather data about the product, including whether it can receive messages and if
they can log in for control.
PowerFlex 750-Series (Architecture
Class) Drives
Allen-Bradley PowerFlex 750-Series drives are part of the PowerFlex 7-Class
family of drives.
Reference/Feedback The Reference is used to send a setpoint (for example, speed, frequency, and
torque) to the drive. It consists of one 32-bit word of output to the option
module from the network.
Feedback is used to monitor the speed of the drive. It consists of one 32-bit word
of input from the option module to the network.
SI (Serial Interface) A next generation communication interface used by various Allen-Bradley drives,
such as PowerFlex 750-Series drives.