BS ISO 22158 pdf download

BS ISO 22158 pdf download Input/output protocols and electronic interfaces for water meters — Requirements
1 Scope
This International Standard specifies the minimum communication requirements for water meters which havethe capability to exchange or provide data by means of an electronic interface.
This International Standard only specifies the interface conditions present at the electrical and electronicconnections of water meters and does not prescribe any specific equipment such as transponders andinductive pads,which might be connected to the water meter for automatic meter reading or remote meterreading purposes.
Normative references
The following referenced documents are indispensable for the application of this document. For datedreferences，only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments)applies.
ISO 1155, Information processing—Use of longitudinal parity to detect errors in information messages
IEC 60870-5-1，Telecontrol equipment and systems — Part 5: Transmission protocols —Section One:Transmission frame formats
IEC 60870-5-2，Telecontrol equipment and systems— Part 5: Transmission protocols—Section 2: Linktransmission procedures
IEC 60947-5-6,Low-voltage switchgear and controlgear—Part 5-6: Control circuit devices and switchingelements —DC interface for proximity sensors and switching amplifiers (NAMUR)
EN 13757(all parts), Communication systems for meters and remote reading of meters
JIS x 5001:1982,Character structure on the transmission circuits and horizontal parity method
NABS1), Communication system by addressable 8-bit electronic water meters —Specifications,ver.1.0, 2008.Available [2011-04-27] from: http://www.keikoren.or.jpleng/pub.html
M-bus2)，The M-bus:. A documentation Rev.4.8,1997.Available [2011-04-27] at http:/www.m-bus.com
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 13757 (all parts) and the following
apply.
3.1
interface
〈water meters〉 point or means of interaction between two systems
3.2
pulse
〈water meters〉 electronic output (generated or passive) from the interface, with pulses at increments equal to
a specific defined volume
3.3
non-addressable interface device
interface device that cannot be addressed individually in a reading bus
3.4
addressable interface device
interface device that can be addressed individually in a reading bus
3.5
automatic meter reading
AMR
meter reading normally involving a central computer
3.6
remote meter reading
RMR
meter reading remote from the meter, not necessarily involving a central computer
3.7
switching current
current that can be carried by the switch during switching
3.8
switch closure
device providing a digital pulse (reed switch, transistor, etc.)
3.9
omnidirectional pulse data set
pulse data set where the pulses do not signify flow direction
3.10
unidirectional pulse data set
pulse data set where the pulses signify flow in one direction only
3.11
bidirectional pulse data set
pulse data set where the pulses signify flow direction
3.12
passive output
〈water meters〉 non-powered switching device
3.13
active output
〈water meters〉 powered switching device (internal or external to interface
3.14
tamper detection
〈water meters〉 facility to detect attempts to corrupt the metering equipment or the data stored in it
3.15
output mode
〈water meters〉 electronic characteristics of a pulse
3.16
data set type
electronic characteristics of a group of pulses providing flow information
3.17
V-frame
data sets including variable length fields
4 Pulse output water meters —type A
NOTE The primary function of this output type is to provide real-time metering pulses that represent a specific unit of water passing through the meter.
4.1 General
Compatibility is defined by output modes, data set types and signal output types designated as follows.