Document Conventions; Glossary Of Terms And Abbreviations - ABB Symphony Harmony Series Instruction

Document Conventions

Document Conventions
The ? in a nomenclature or part number indicates a variable
for that position (e.g., 1949480?1). In a part number and doc-
ument number, the ? is a place holder for the revision letter.

Glossary of Terms and Abbreviations

Table
instruction. It contains those terms and abbreviations that are
unique to ABB Automation or have a definition that is different
from standard industry usage.
Table 1-3. Glossary of Terms and Abbreviations
Term
Auxiliary block
Base
BRC
Channel label
Device label
Exception report
Function code (FC)
HAC
Harmony network
(Hnet)
I/O block
I/O expander bus
I/O module
Machine fault time
(MFT)
Module mounting unit
(MMU)
1 - 12
1-3 is a glossary of terms and abbreviations used in the
I/O system device that enhances I/O block capabilities.
Mounting base for a block. For I/O blocks it supports screw terminals,
clamp terminals, or cable connection of field wiring.
Harmony bridge controller.
Optional name (i.e., character string) assigned to an I/O channel.
Name (i.e., character string) assigned to an I/O block. The device label
identifies a block instead of a hardware address.
Information update generated when the status or value of a point
changes by more than a specified significant amount.
An algorithm that manipulates specific functions. These functions are
linked together to form the control strategy.
Harmony area controller.
Redundant serial communications system that allows data to be trans-
mitted between Harmony devices.
Generic name for a processor based Harmony input/output device:
AIN-120, AOT-150, DIO-400, etc.; comprised of an I/O module and a
base.
Parallel communication bus between the Harmony controller and rack
I/O.
Houses the I/O block circuitry that processes inputs and outputs; part of
an I/O block.
Reset by the block processor during normal operation. If not reset regu-
larly, the MFT times out and the I/O block stops.
Card cage that provides electrical and communication support for
Harmony rack I/O.
Definition
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