IN19856
- 10 -
Rev 2
D
DHCP
DHCP (Dynamic Host Configuration Protocol) allows the ITV IP address to be set using an external
DHCP server. DHCP may be used if desired but is not required.
Downstream
Relative to your ITV, a downstream device receives power and/or communication signals which
originate
from
or are
passed through
your ITV. This also refers to pneumatic devices controlled by
the ITV.
DLR
DLR (Device Level Ring) is supported by Rockwell Automation® PLCs for Ring networks. If your
ITVs are configured using a ring topology, DLR provides redundancy if a problem (such as a line
break or device failure) occurs within a Ring network. DLR allows communication and control of
devices in the network to continue in the event of a single communication failure.
E
Electronic Data
Sheet (EDS)
EDS is a file containing settable attribute information for a device
(each parameter’s object address,
etc.). Used by Rockwell Automation® PLC RSLogix 5000® or Logix Designer
TM
software to permit
faster, more consistent PLC setup.
Ethernet/IP
TM
(EIP)
The specific Fieldbus (network) communication protocol used by the ITV to communicate with the
PLC, and any other connected devices. EIP is a well-documented, standard communications
protocol.
F
Fieldbus
The protocol that uses digital communication to exchange signals between field equipment
(instruments and actuators).
Full duplex
Communication system that can send and receive data at the same time bi-directionally (similar to
standard telephone).
H
Half duplex
Communication system that sends and receives data in one direction at a time (similar to two-way
radio).
Host Address
The final (4
th
) octet of an IP Address.
I
IP address
A 32-bit digit sequence which is assigned to identify devices which are connected to the network.
This address must be unique for each device to ensure proper operation of the network.
IPxy
International Ingress Protection standard. xy indicates the level of protection from external objects
(hands, steel balls, steel wire, dust, water, etc.) applied to the product.
M
MAC address
A unique number inherent to all devices which are connected to Ethernet.
Master
The master is the device which controls the ITV. Typically, a master is a PLC. It may also be a PC
(using the ITV web pages or a
LabVIEW™ software
program) or it may be another device capable of
controlling the ITV.
MS
Module Status.
N
NS
Network Status
P
PC
Personal Computer.
PLC
Abbreviation for Programmable Logic Controller. A digital computer/controller used for
automation of electromechanical processes.
Power Cycle
A Power Cycle involves briefly removing power from the ITV and then restoring power.
S
Setpoint
The specified pressure or vacuum value which the ITV has been directed to maintain.
Serial Interface
(SI)
A communication interface between two digital systems that transmits data as a series of voltage
pulses down a wire. Each pulse represents a single bit of data.
SI unit
Abbreviation for Serial Interface unit. A unit connected to a device to communicate input and
output data. The ITV connection to another device is a Serial Interface Unit (SI Unit).
Subnet Address
The 3
rd
octet of an IP Address. Also called Subnet.
T
Topology
Connection configuration of the network.
U
Upstream
Relative to your ITV, an upstream device provides power and/or communication signals
to
your
ITV.
Figure 1 - Definitions and Terminology
4.
Product Summary
The Ethernet ITV is a pressure/vacuum regulator which is controlled over a standard ethernet
interface. Pressure ITVs (ITVX010, ITVX030, and ITVX050) and Vacuum ITVs (ITV2090) regulate
supplied air pressure or vacuum to an output pressure or vacuum specified by the user. The user
can set the ITV pressure or vacuum and monitor the ITV operating status using the built-in
webserver, PLC, or explicit messaging.
