Home : Introduction to INTERBUS : Terms & Definitions

Introduction

This document contains all the words, terms, abbreviations, acronyms and symbols found in INTERBUS documentation. It is to be used as a companion to any INTERBUS documentation you may now have. Some of the words, phrases and acronyms used to described INTERBUS products are of German origin.

This manual in divided into two sections. Section 1 contains the meanings for all abbreviations, acronyms and symbols used in INTERBUS documentation. Section 2 provides the meaning of words, terms and phrases used in INTERBUS documentation. All entries are listed in alphabetical order.

How to Use This Document

To find the meaning of a known abbreviation, acronym or symbol, use Section 1. Once the meaning is known, refer to Section 2 for a more detailed explanation of that meaning.

Section 1. Abbreviations, Acronyms and Symbols

-T: See Two Twisted Pairs.

/2: See 2-Wire Termination.

/3: See 3-Wire Termination.

/4: See 4-Wire Termination.

/I: See Isolation.

3H: See 3U.

6H: See 6U.

AI: See Analog Input.

AO: See Analog Output.

BA: See Bus Active.

BK: See Bus Terminal.

CB: See Controller Board.

CC: See Communication Check.

CCO: See Circular Connector.

CCS: See Customer Support Services.

CNT: See Counter.

COP: See Controller Board, Intelligent Co-Processor.

CRC: See Cyclic Redundancy Check.

CSA: See Canadian Standard Association.

DCB: See Diagnostics Controller Board.

DI: See Digital Input.

DIN: Deutsche Industry Normal.

DIO: See Digital Input/Output.

DLL: See Dynamic Link Library.

DO: See Digital Output.

DPM: See Dual Port Memory.

FCS: See Frame Check Sequence.

FMS: See Fieldbus Message System.

FP: See Flat-Pack.

HB: See Hand Book.

HHM: See Hand-Held Monitor.

I/O: See Input/Output.

IB: See INTERBUS.

IBR: See INTERBUS-R.

IBS: See INTERBUS.

IEC: See International Electromechanical Commission.

IPMS: See INTERBUS Protocol Master.

IRB: See Installation Remote Bus.

ISA:See Industry Standard Adapter.

iSBX: See Intel Single Board Expansion.

KBL: See Communication Relationship List.

KIS: See Machine Terminal Blocks.

KR: See Communication Reference.

LB: See Local Bus.

LC: See Low Cost.

LWL: See Light Wave Link.

MA: See Master Adapter.

MAP: See Manufacturing Automation Protocol.

MMS: See Manufacturing Message System.

MPM: See Multi Port Memory.

MUX: See INTERBUS-MUX.

OV: See Object Dictionary.

PA: See Equipotential Bonding.

PAA: See Process Array Output

PAE: See Process Array Input

PC: See Personal Computer.

PCP: See Peripherals Communications Protocol.

PD: See Process Data.

PE: See Protective Earth Ground.

PLC: See Programmable Logic Controller.

PMS: See Peripheral Message Specification.

RB: See Remote Bus.

RBD: See Remote Bus Drop.

RC: See Remote Bus Check.

REC: See Reconfiguration Key.

REL: See Relay.

RT: See Remote Terminal.

RTD: See Resistance Temperature Device.

SAB: See Sensor/Actuator Box.

SACON: See Sensor Actuator Configuration

SIOC: See Serial I/O Controller.

SL: See Slave.

SmPI: See Serial Microprocessor Interface.

ST: See Smart Terminal Block.

STD-32: See Standard Bus 32-bit.

STD-80: See Standard Bus 8-bit.

STME: See Smart Terminal Block Module Electronics.

STTB: See Smart Terminal Block Terminal Base

SWD: See Software Driver.

SWT: See Software Tools.

TUV: See Federal Republic of Germany approval agency

UL: See Voltage Logic.

UL: See Underwriters Laboratories.

UM: See Users Manual.

US: See Voltage I/O.

UTH: See Universal Thermocouple.

VFD: See Virtual Field Device.

VME: See VERSA Module Europe.

Section 2. Definitions

1-Wire Termination:
Wire termination method, for I/O devices, has only one termination connection per point. Additional termination connections are required.

2-Wire Termination (/2):
Wire termination method, for I/O devices, has two termination connections per point.

3-Wire Termination (/3):
Wire termination method, for I/O devices, has three termination connections per point.

3U:
A definition for the physical height of a VMEbus board or rack. 3U is half height (5.25 inches).

4-Wire Termination (/4):
Wire termination method, for input devices, has four termination connections per point.

6U:
A definition for the physical height of a VMEbus. See: board or rack. 6U is full height (10.5 inches).

8 Twisted Pairs:
Indicates the INTERBUS- S interface of the particular module or board, uses 8 twisted pairs as the electrical layer. This is older technology and has been replaced by the Two Twisted Pairs (see). Conversion between the 8 twisted pair and two twisted pair is accomplished by the IBS 24 BK/LC2 module.

Analog Input (AI):
An I/O device that will read an analog signal, convert it to a digital representation then transmit it back to the IBS controller board.

Analog Output (AO):
An I/O device that will generate an analog signal from a digital representation that was transmitted from the IBS controller board.

Board:
An unpackaged device designed for a specific function(s) that will be installed into another device. A board has no environmental specifications (IP or NEMA). Special static-sensitive handling is required during unpacking.

Bus Active (BA):
Indicates that IBS scan cycles are taking place.

Bus Terminal (BK):
A device for controlling local bus operations from a remote bus. Used to divide Universal I/O Modules (see) into functional groups. Provides isolation and error recovery for the Local Bus (see). Also, it operates as a repeater for the Remote Bus.

Canadian Standard Association (CSA):
Canadian certifying agency, in charge of conducting tests on device safety.

Circular Connector (CCO):
Describes an IP65 connector in a circular format.

Client:
A communication device that requests a service from a Server (see).

Communication Check (CC):
An LED indicating that the incoming communications bus is operational.

Communication Reference (KR):
The Physical Address (see) of a PCP Word (see). The first I/O device starts with 2.

Communication Relationship List (KBL):
A list of conventions describing the nature of a PCP connection. Informs clients and servers what type of data may be exchanged.

Controller Board, Intelligent Co-Processor:
A classification of IBS controller boards that have an on-board micro-controller to handle all the IBS functions as well as embedded PC compatible controller to perform application logic. The Controlling Device (see) has the ability to access IBS data or embedded PC data through a MPM (see) interface. Features include: RS-232 diagnostics/download port, full INTERBUS performance and diagnostics.

Controller Board, Intelligent:
A classification of IBS controller boards that have an on-board micro-controller to handle all the IBS functions. The Controlling Device (see) only needs to access the board, through DPM (see), for the latest I/O data. Features include: RS-232 diagnostics port, full INTERBUS performance and diagnostics.

Controller Board, Non-intelligent:
A classification of IBS controller boards without a micro-controller on board. The Controlling Device must perform all tasks for IBS operation. INTERBUS maximum performance cannot be achieved. Limited diagnostics are available.

Controller Board:
A plug-in board, installed into a Controlling Device (see), that is, the master of the INTERBUS I/O network.

Controlling Device:
A computer- or PLC-based device that runs an application. Controlling devices must have an IBS controller board installed in order to run an IBS network.

Counter (CNT):
Type of I/O module for counting or generating high-speed pulses.

Customer Support Services (CCS):
The Phoenix Contact INTERBUS Systems Group that handles customer inquiries and service problems.

Cyclic Redundancy Check (CRC):
A test method for ensuring faithful communications.

Diagnostics Controller Board (DCB):
Any IBS controller board with DCB in the nomenclature will have the same functions of an Intelligent Controller Board with the addition of a diagnostics front panel. See: Controller Board, Intelligent and Diagnostics Panel.

Diagnostics Panel:
A panel containing the following diagnostic LEDs: I/O status, communication status, controller status, and a 7-segment LED display that reports error codes. I/O data values can be accessed by a thumb-wheel selection switch.

Digital Input (DI):
An I/O device that will read digital signals, then transmits them back to the IBS controller board.

Digital Input/Output (DIO):
An I/O device that will read and generate digital signals to and from the IBS controller board.

Digital Output (DO):
An I/O device that will generate digital signals transmitted from the IBS controller board.

DRIVECOM:
An INTERBUS compatible drive controller user's group. This group established software and interface hardware standards for manufacturers to follow.

Drop:
Refers to a device on the Remote Bus.

Dual Port Memory (DPM):
A efficient method for interfacing with a controller board This is a memory block accessable by both the IBS network and the host interface.

Dynamic Link Library (DLL):
A Windows-based driver for linking hardware to software. The DLL is written for a specific piece of hardware. Any Windows-based software may access the DLL.

ENCOM:
An INTERBUS compatible encoder user's group that established interface hardware standards for manufacturers to follow.

Equipotential Bonding (PA):
Method for connecting the PE (see) of many devices. Refer to your INTERBUS Installation Manual for specific details.

Fieldbus Message System (FMS):
A protocol for field devices that allows a migration path to MAP (see) compliance.

Fieldbus:
A digital communications standard for field devices.

Flat-Pack (FP):
A family of I/O modules that mount on twin DIN rails. Products meet IP20 environmental specifications.

Frame Check Sequence (FCS):
The last operation performed during an IBS Scan Cycle (see) where the CRC (see) and Loop Back Word are evaluated.

Gateway Module:
A module designed for connecting two Networks (see) together.

Hand Book (HB):
A small manual or reference book produced by Phoenix Contact. The designation HB refers to hand books written in Germany, HB E designates those written in English.

Hand-Held Monitor (HHM):
A hand-held device for testing IBS Flat-Pack (see) I/O modules.

IBS SYS SWT:
A computer-based control program for initializing and testing an INTERBUS I/O network through the RS-232 port of an intelligent controller board.

IBSMONI:
A DOS-based control program for testing and evaluating an INTERBUS I/O network.

ID Cycle:
A process used by INTERBUS to identify all I/O devices. Information returned includes: module count, module ID numbers and quantity, and the location of IBS system words.

ID Number:
A numeric value between 1 and 255 that all I/O devices contain. This number is used to inform the host controller of its device classification.

Industry Standard Adapter (ISA):
The expansion bus inside PC compatible computers.

Input:
The applied force or signal which drives a circuit or device

Input/Output (I/O) Device:
A generic term for a device that gathers (inputs) or generates (outputs) control signals.

Installation Remote Bus (IRB):
A Local Bus (see) that uses the same electrical signal as the Remote Bus (see) with the addition of 24 V dc power-supply wires.

Intel Single Board Expansion (iSBX):
An 8-bit expansion connector used to install a single I/O board into an Intel-based computer.

INTERBUS (IB):
Refers to the Phoenix Contact family of INTERBUS distributed I/O products. Products include: INTERBUS (see), INTERBUS-R (see) and INTERBUS-MUX (see).

INTERBUS-MUX (MUX):
A wire replacement multiplexer system based on bitbus. Uses the Flat-Pack (see) Universal I/O modules (see).

INTERBUS-R (IBR):
A process oriented ASCII- based distributed I/O network that shares a similar communications protocol to that defined by OPTO22., i.e. Optomux. Uses the Flat-Pack (see) Universal I/O modules (see).

INTERBUS (IBS):
A classification of high-speed distributed I/O devices sharing a similar communications protocol as defined by DIN E 19258.

INTERBUS Protocol Master (IPMS):
An ASIC chip containing the INTERBUS protocol and operate as the INTERBUS master.

IP20:
An IEC environmental specification defined as "protection against solid objects greater than 12 mm." Closely matches the NEMA 1 (ventilated) general purpose specification.

IP65:
An IEC environmental specification defined as "dust-tight and protection against water jets." Closely matches the NEMA 12 in-dust use, dust-tight and drip-tight specification.

IP67:
An IEC environmental specification defined as "dust-tight and protected against water entry at one meter immersion." Closely matches the NEMA 4 dust-tight and watertight specification.

Isolation (/I):
Indicates that the INTERBUS interface, of the particular module or board, incorporates isolation between the communication input and output connections and the internal electronics.

Light Wave Link (LWL):
A designation for any I/O device that uses fiber optic communications at the electrical level.

Local Bus (LB):
A communications bus segment used to group I/O modules together. It is isolated from the Remote Bus (see). Local buses are available in three styles: Flat-Pack, Smart Terminal Block (ST) and Installation Remote Bus (see).

Logical Address:
An optional method used to address the system word within an INTERBUS network. Logical addressing follows a user definable predetermined address map for the System Words (see).

Loop Back Word:
A test/diagnostics word sent every scan cycle. It checks for a scan cycle time-out and transfers diagnostic bits between I/O devices.

Low Cost (LC):
A reference to compact, lower cost module.

Machine Terminal Blocks (KIS):
An IP67 INTERBUS family of products designed for use in extremely harsh environments.

Manufacturing Automation Protocol (MAP):
An international communication standard applicable to all 7 layers of a communication protocol.

Manufacturing Message System (MMS):
A protocol for passing messages to and from any level within the MAP (see) communication layers.

Master Adapter (MA):
A daughter-board product line containing the functionality of an INTERBUS controller. Architecture for this board is MPM (see). Daughter boards are available with different memory options (MA/1, MA/2, etc.).

Module:
A packaged device designed for a specific function(s). These devices conform to an environmental specification. No special handling is required.

Multi Port Memory (MPM):
A memory sharing scheme capable of having 4 ports. This architecture is used on most Phoenix Contact intelligent controller boards.

Network:
A communications link that connects devices together. The link operates under a protocol understood by all devices.

Node:
Refers to a device on the Remote Bus (see).

NPN:
Defines the direction of current flow in an I/O device. NPN is also referred to as Sink (see).

Object Dictionary (OV):
A list of commands (indexes) that a PCP device supports.

Object, Communication:
Data, variables or programs transferred between clients/servers (see) and communication devices.

PCP Word:
A type of System Word (see). A 16-bit value transferred every scan cycle, contains a byte of a PCP message or response.

Peripheral Message Specification (PMS):
A protocol for sensor/actuator devices that allow a migration path to MAP (see) compliance.

Peripherals Communications Protocol (PCP):
A standard method of transferring large amounts of data, one byte at a time, through an IBS network while using only one System Word (see).

Personal Computer (PC):
An Intel-based, IBM-compatible computer.

Physical Address:
The standard method used to address the System Word (see) within an INTERBUS network. Physical addressing follows the physical placement of the system word.

PNP:
Defines the direction of current flow for an I/O device. PNP is also referred to as Source (see).

Process Array Input (PAE):
Dimensioned array that holds process data input information. See Process Data.

Process Array Output (PAA):
Dimensioned array holding process data output information. See Process Data.

Process Data (PD):
The main communications element of an INTERBUS network. It is the high-speed value that is updated every scan cycle.

Process Data Word:
A type of System Word (see). A 16-bit value transferred every scan cycle, contains high-speed I/O data.

Programmable Logic Controller (PLC):
A control device developed exclusively for the automation industry.

Protective Earth Ground (PE):
A connection point to earth ground.

Reconfiguration Key (REC):
After an I/O group goes off line, the REC signal informs an IBS host controller that the I/O group may be put back on line.

Relay (REL):
An electromechanical device that is used as a switch.

Remote Bus (RB):
A communications bus segment used to connect RBD I/O modules and BK modules together over a long distance.

Remote Bus Check (RC):
Indicates the health of the incoming remote bus.

Remote Bus Drop (RBD):
Any I/O device that the communication connection is a remote bus interface.

Remote Terminal (RT):
A family of IP20, RBD INTERBUS modules designed to be mounted in an enclosure. These modules are designed as low-cost alternatives for drops having only a few I/O points.

Resistance Temperature Device (RTD):
A type of input device used to measure temperature.

RS-232:
The standard serial communications for computer peripherals.

RS-422:
The standard differential serial communications for computer peripherals.

Scan Cycle Time:
Term used to define the time required for INTERBUS to read all input devices and write to all output devices.

Scan Cycle:
A process INTERBUS uses to read and write to I/O devices as well as transfer a byte of PCP data.

Sensor/Actuator Box (SAB):
A family of IP67, INTERBUS modules designed to be used without an enclosure. Modules use micro-style circular connectors like the standard connectors used on proximity sensors for interfacing with the I/O.

Sensor Actuator Configuration (SACON):
Configuration program used to modify the standard configuration of intelligent analog modules. Runs on a PC using the IBS PC AT-T controller board.

Serial I/O Controller (SIOC):
An ASIC chip with the INTERBUS protocol built in. Operates as an INTERBUS slave I/O device. This ASIC chip uses an older 8-Twisted-Pair (see) technology that has been replaced by the SmPI (see) chip.

Serial Microprocessor Interface (SmPI):
An ASIC chip with the INTERBUS protocol built in. Operates as an INTERBUS slave I/O device. This ASIC chip has the ability to interface directly with a microprocessor or directly to the I/O.

Server:
A communications device that responds to a service from a client (see).

Sink:
Defines the direction of current flow for an I/O device. A sink point will have its common side connected to positive voltage (+V). The signal line will go active when driven negative with respect to the +V. Sink is also referred to as NPN.

Slave (SL):
Signifies that a device is totally dependent on the IBS host controller board for instructions. This term is only used for boards that plug into a controlling device.

Smart Terminal Block (ST):
A family of compact INTERBUS I/O products. Modules consist of a Smart Terminal Block Terminal Base (see) unit and a Smart Terminal Block Module Electronics (see) unit. Modules mount to a single DIN-Rail and meet IP-20 specifications.

Smart Terminal Block Module Electronics (STME):
The pluggable portion of the IBS ST I/O module. This unit contains all of the active electronic circuits. Modules can be ordered separately for spares.

Smart Terminal Block Terminal Base (STTB):
The base terminal block portion of the IBS ST I/O module. Its a passive device used for connecting all of the sensor/actuator devices. These units can be ordered separately.

Software Driver (SWD):
A floppy disk containing programs or drivers applicable to a specific product.

Software Tools (SWT):
A floppy disk containing utility programs for a specific product or product group.



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