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Input/output protocols and electronic interfaces for water meters -- Requirements
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Basic data | Standard ID | GB/T 36243-2018 (GB/T36243-2018) | | Description (Translated English) | Input/output protocols and electronic interfaces for water meters -- Requirements | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N12 | | Classification of International Standard | 91.140.60 | | Word Count Estimation | 50,532 | | Date of Issue | 2018-06-07 | | Date of Implementation | 2019-01-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 36243-2018: Input/output protocols and electronic interfaces for water meters -- Requirements ---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Input/output protocols and electronic interfaces for water meters--Requirements
ICS 91.140.60
N12
National Standards of People's Republic of China
Water meter input and output protocol and electronic interface requirements
(ISO 22158.2011, IDT)
Published on.2018-06-07
2019-01-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 pulse output water meter --- type A 3
4.1 General 3
4.2 Pulse output mode 3
4.3 Pulse Waveform Definition 4
4.4 Pulse Data Set Type 6
4.5 Signal Output Type 6
4.6 Pulse Configuration 6
5 Non-addressable water meter---B type 7
5.1 General 7
5.2 Output mode of non-addressable water meter 7
5.3 Dataset Type 8 for Non-Addressable Water Meters
5.4 Non-addressable V-frame data protocol 8
5.5 Non-addressable two-wire asynchronous mode with sensor board and sensing probe readings 10
5.6 Non-addressable three-wire asynchronous mode for direct connection to repeater/bus nodes 11
5.7 Non-addressable two-wire synchronous mode with sensor board and sensing probe readings 12
5.8 Non-addressable three-wire synchronous mode for direct connection of repeater/bus nodes 13
5.9 Non-addressable two-wire bidirectional asynchronous mode with optocoupler and probe readings 14
5.10 Compatibility Statement 15
6 addressable water meter---C type 16
6.1 General 16
6.2 Output mode "1" based on M-BUS bus technology 16
6.3 Output Mode Based on Dialog Technology 2 25
6.4 Output mode based on "NABS" technology 3 34
Appendix A (informative) Designated Registration Authority 44
Reference 45
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard uses the translation method equivalent to ISO 22158.2011 "water meter input and output protocol and electronic interface requirements."
The documents in China that have a consistent correspondence with the international documents referenced in this standard are.
--- GB/T 14048.15-2006 Low-voltage switchgear and control equipment - Part 5-6. Control circuit electrical and switching components
DC interface (NAMUR) for proximity sensors and switching amplifiers (IEC 60947-5-6.1999, IDT);
--- GB/T 18657.1-2002 Telecontrol equipment and systems - Part 5. Transmission Profiles Part 1. Transmission frame format
(IEC 60870-5-1..1990, IDT);
--- GB/T 18657.2-2002 Telecontrol equipment and systems - Part 5. Transmissions
Then (IEC 60870-5-2..1992, IDT);
--- GB/T 26831.2-2012 Community Energy Metering and Copying System Specification Part 2. Physical Layer and Link Layer (EN13757-
2.2004, IDT);
--- GB/T 26831.3-2012 Community Energy Metering and Copying System Specification Part 3. Dedicated Application Layer (EN13757-3.
2004, IDT).
This standard was proposed by the China Machinery Industry Federation.
This standard is under the jurisdiction of the National Industrial Process Measurement Control and Automation Standardization Technical Committee (SAC/TC124).
This standard was drafted. Shanghai Industrial Automation Instrumentation Research Institute Co., Ltd., Ningbo Water Meter Co., Ltd., Sanchuan Smart Technology Unit
Co., Ltd., Ningbo Donghai Instrument Waterway Co., Ltd., Chongqing Smart Water Co., Ltd., Suzhou Waterworks Co., Ltd., Wuxi Water Meter
Limited Liability Company, Yangzhou Hengxin Instrument Co., Ltd., Zhejiang Institute of Metrology, Henan Institute of Metrology, Ningbo Metrology
Research Institute, Jinan Ruiquan Electronics Co., Ltd., Jiangyin Lixin Intelligent Equipment Co., Ltd., Ningbo Jingcheng Technology Co., Ltd., Qingdao
Jicheng Electronics Co., Ltd., Hunan Weiming Energy Technology Co., Ltd., Jiangsu Yuanchuan Intelligent Technology Co., Ltd., Shanghai Water Table Factory, Beijing
Water Group Jingzhao Water Meter Co., Ltd., Xi'an Qiqi Electronics Co., Ltd., Shenzhen Xingyuan Intelligent Instrument Co., Ltd., Hangzhou
Water Meter Co., Ltd., Hunan Changde Brand Water Meter Manufacturing Co., Ltd., Shandong Chenhui Electronic Technology Co., Ltd., Zhirun Technology Co., Ltd., Zhejiang Gold
Long Automatic Control Equipment Co., Ltd.
The main drafters of this standard. Li Minghua, Zuo Fuqiang, Song Caihua, Lu Wen, Wei Qinghua, Yao Fujiang, Zhang Qing, Xu Yixin, Zhao Jianliang, Cui Yaohua,
Ma Jun, Dong Liangcheng, Han Lu, Tang Tianshun, Zhang Dexia, Zhu Zhengjian, Tan Xiaobin, Chen Yu, Zhang Wenjiang, Guo Yonglin, Liu Qingbo, Sun Yilei, Liu Hualiang,
Wang Xueshui, Ge Jian, Zhang Bo.
Introduction
Currently, the need for communication between metering devices and metering systems has become increasingly apparent. This standard is intended to address the correlation between water meter and metering system communication.
Problem, this standard can also be used in conjunction with other metering systems that use common interfaces and protocols, such as gas and power metering systems.
In recent years, more and more electronic devices have been used in water meters, such as.
---Pulse output system;
---Absolute coding system;
--- Bidirectional addressable bus system.
At present, no matter whether the hardware interface or protocol of such a system is clearly defined, this standard attempts to solve the problems arising therefrom.
Existing water meter communication technologies can be divided into the following three different types.
---Pulse output water meter, which is called A type in this standard;
--- Non-addressable water meter, which is called B type in this standard;
--- Addressable water meter, which is called C type in this standard.
This standard describes the general requirements for water meter input and output protocols and electronic interfaces. Its purpose is to set up the water meter register and meter reading equipment.
The staff provides the necessary guidance.
The relevant provisions are determined by analysing the applications currently in use and by consulting the water supply industry. Of course, the applications listed are not
Comprehensive and detailed.
Water meter input and output protocol and electronic interface requirements
1 Scope
This standard specifies the minimum communication requirements for water meters that can exchange or provide data via electronic interfaces.
This standard only specifies the interface conditions of the electrical and electronic connection device of the water meter. It is not specified to be connected to the water meter for automatic meter reading or far.
The requirements for special equipment such as transponders and sensing units of the meter reading.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
ISO 1155 Information Processing uses vertical parity check bits to detect information message errors (Informationprocessing-Useof
Longitudinalparitytodetecterrorsininformationmessages)
IEC 60870-5-1 Remote control devices and systems - Part 5. Transport protocol clause 1. Transmission frame format (Telecontrol
equipmentandsystems-Part 5. Transmissionprotocols-SectionOne. Transmissionframeformats)
IEC 60870-5-2 Remote Control Equipment and Systems Part 5. Transport Protocols Section 2. Link Transmission Rules (Telecontrol
equipmentandsystems-Part 5. Transmissionprotocols-Section2.Linktransmissionprocedures)
IEC 60947-5-6 Low-voltage switchgear and controlgear - Part 5-6. Control circuit electrical and switching component proximity sensors
And the DC interface of the switching amplifier (NAMUR) (Low-voltageswitchgearandcontrolgear-Part 5-6. Controlcir-
cuitdevicesandswitchingelements-DCinterfaceforproximitysensorsandswitchingamplifiers
(NAMUR))
EN13757 (all parts) Instrument communication system and remote meter reading (Communicationsystemsformetersandremote
Readingofmeters)
JISX5001.1982 Character structure and lateral parity of transmission lines (Characterstructureonthe
Transmissioncircuitsandhorizontalparitymethod)
NABS1) Communication System Specification for Addressable 8-Bit Electronic Water Meter,.2008 Version 1.0 (Communicationsystembyad-
Dressable8-bitelectronicwatermeters-Specifications, ver.1.0,.2008), available at. http.//
Www.keikoren.or.jp/eng/pub.html[2011-04-27]
M-BUS2) M-BUS. Document, Version 4.8,.1997 (TheM-BUS. Adocumentation Rev. 4.8,.1997), available from
1) Published by the Japan Water Meter Manufacturers Association.
2) Published by the M-BUS bus user organization.
3 Terms and definitions
The following terms and definitions as defined by EN 13757 apply to this document.
3.1
Interface
< water meter> A point or tool that interacts between two systems.
3.2
Pulse pulse
(active or passive) electronic output of the < water meter> interface. The increment of the pulse is equal to the specific water volume.
3.3
Non-addressable interface device non-addressableinterfacedevice
An interface device that cannot be independently addressed on the meter reading bus.
3.4
Addressable interface device addressableinterfacedevice
An interface device that can be independently addressed on the meter reading bus.
3.5
Automatic meter reading automaticmeterreading; AMR
There is usually a meter reading in which the central computer participates.
3.6
Remote meter reading remotemeterreading; RMR
The central computer does not necessarily participate in meter reading that is far from the water meter.
3.7
Switch current switchingcurrent
The current that the switch can carry when switching.
3.8
Switch closure switchclosure
A device that produces digital pulses (reed switches, transistors, etc.).
3.9
Undirected pulse data set omnidirectionalpulsedataset
The pulse does not indicate the pulse data set of the direction of water flow.
3.10
Unidirectional pulse data set uni-directionalpulsedataset
The pulse only indicates the pulse data set of a water flow direction.
3.11
Bidirectional pulse data set bi-directionalpulsedataset
The pulse indicates the pulse data set of the direction of the water flow.
3.12
Passive output passive output
< Water meter> Switching device without power supply.
3.13
Active output active output
< Water meter> Switching device with power supply (inside or outside the interface).
3.14
Tamper detection tamperdetection
< water meter> A device used to detect an attempt to destroy a metering device or store data in the device.
3.15
Output mode outputmode
< Water meter> Electronic characteristics of the pulse.
3.16
Data set type datasettype
The electrical characteristics of a set of pulses that provide flow information.
3.17
V-frame V-frame
A data set that contains variable length fields.
4 pulse output water meter --- type A
Note. The primary function of this output type is to provide real-time metering pulses to represent the amount of water flowing through a specified unit of the meter.
4.1 General
Compatibility is defined by the following output modes, dataset types, and signal output types.
--- Pulse output mode. 1, 2, 3, 4, 5, 6, 7, 8;
--- Data set type. O, U, B1, B2, N1, N2;
--- Signal output type. N, P, T.
Note. Compatible products can be labeled. "A1O", "A2O", "A3U", "A4UN", "A5B2P", "A7N2", etc.
The requirements for pulse output mode, pulse waveform definition, pulse data set type and signal output type are shown in 4.2~4.5.
4.2 Pulse output mode
The pulse output mode should meet the requirements of Table 1.
Table 1 Pulse output mode of pulse output water meter (type A)
parameter
Types of
A1 A2 A3 A4 A5 A6 A7 A8
Characteristic passive active active
pulse
(see 4.3) No voltage
Active high state
Active current loop (see 5.2)
Process technology
Passive switch closure
Signal use power supply
Self-powered pulse
Self-powered crystal
Tube switch
External power supply transistor switch
Sensor uses buffer
External supply current pulse
voltage
range
- - - -
2V~
5VDC
5V~
15VDC
IEC 60947-5-6
(nominally 8.2VDC,
1kΩ power supply internal resistance)
Table 1 (continued)
parameter
Types of
A1 A2 A3 A4 A5 A6 A7 A8
Switching current
And voltage
≤30VDC
3μA~
20mA
≤100VDC
3μA~
500mA
Up to 20VDC
≤20mAa
Up to 20VDC
≤10mAa
Up to 20VDC
≤20mAa
- -
Off state impedance >10MΩ >10MΩ - - >10MΩ - -
Open state impedance < 200Ω < 150Ω - - < 500Ω - -
Current consumption - - - - < 20mA
IEC 60947-5-6
( >2.1mA)
Typical data
Set type
(see 4.4)b
Undirected one-way undirected, one-way or two-way undirected or two-way
Typical product
Type b
Micro switch, reed switch
Solid state switch
Generator or
Piezoelectric sensor
Piezoelectric sensor
Magnetic sensor
Piezoelectric sensor, magnetic sensor or
Optical sensor
Micro switch, reed switch,
Magnetic sensor or optical sensor
a When the signal output type is “T”, this voltage is replaced by the power supply voltage.
b Other types are also applicable.
4.3 Pulse Waveform Definition
The pulse waveform definition of pulse output mode A1~A8 should meet the requirements of Figure 1~5.
Note. The times given in Figures 1 to 5 are for illustrative purposes only.
Description.
1---switch open;
2---switch off;
3---leading noise, maximum 5ms;
4---width, minimum 25ms;
5---tailing noise, up to 5ms.
Figure 1 Type A1 and Type A2
Description.
1---main pulse, minimum 3V;
2---secondary pulse, minimum 1V;
3---off;
4---open;
5---width, minimum 1ms;
6---Oscillation, maximum.200ms.
Figure 2 Type A3
Description.
1--- off;
2---open;
3---preamble transition, maximum 100μs;
4---width, minimum 2ms;
5---tailing transition, maximum 10ms.
Figure 3 Types A4, A5 and A6
Description.
1---forward;
2---reverse;
3---the next pulse;
4---1ms;
5---0.5ms (all minimum widths);
6--- minimum 2.1mA;
7---(1.65±0.165) mA;
8---max. 1.2mA.
The highest frequency is 500 Hz forward and 400 Hz reverse.
Figure 4 Type A7
Description.
1---forward;
2---reverse;
3---the next pulse;
4---1.2ms (all minimum widths);
5---max. 0.3ms;
6---max. 6.0mA, minimum 2.2mA;
7---(1.5±0.05) mA;
8---Maximum 1.0mA, minimum 0.04mA.
The highest frequency is 150Hz.
Figure 5 Type A8
4.4 Pulse dataset type
The pulse data set type should meet the requirements of Table 2.
Table 2 Pulse data set type of pulse output water meter
Dataset Type OU B1 B2 B3 N1 N2
Format undirected one-way bidirectional bidirectional bidirectional undirected bidirectional
pulse
definition
No district
Different direction
Specify two directions in one direction
Undirected
Signal
Orthogonal
IEC
60947-5-6
IEC 60947-5-6
"transparent" modifier
4.5 Signal Output Type
In addition to data sets N1 and N2, the output signal should indicate polarity.
The signal output type should be indicated by the following suffix.
---N. 0 voltage signal
---P. Positive voltage signal
---T. push-pull output circuit, push-pull output signal;
---W. Non-polar floating output, no reference signal.
Suffixes are used with dataset types such as ON, UP, and B1T.
4.6 Pulse Configuration
The signal "set" output is essentially not referenced to the measured value.
Example.
The device can have multiple output "sets" labeled with compatible output types. The output types may be the same or different. For example, "A1O A1O" means
A passive, voltage-free output device provides two "sets" of signals that meet the requirements of this standard. "A6B1 A6B2" means an externally powered active output device
Provide two different "sets" of bidirectional signals that meet the requirements of this standard.
When the pulse output has polarity, the "negative" end should be marked accordingly; if it is a wire, a brown core wire should be used.
You can also use a tamper detection or tampering inspection device as an auxiliary function, using one of the following methods. “cable loopback” “cable impedance change”
"" or "magnetic interference signals." These additional connections can utilize public lines, but do not affect the main function of the pulse.
Note. Due to the wide variety of pulses, power supplies, and tamper-proof connections, it is not possible to assign core colors by function.
5 Non-addressable water meter---B type
Note. The main function of this output type is to provide a data stream to confirm and report the recorded unit water volume when the meter is independently connected to the meter reading device.
5.1 General
Compatibility is defined by the following output modes and dataset types (using public data protocols).
--- Output mode. 1, 2, 3;
--- Data set type. A, S1, S2.
Compatible products can be labeled. "B1S1", "B2A", "B3A", etc.
5.2 Output mode of non-addressable water meter
The output mode of the non-addressable water meter shall comply with the requirements of Table 3.
Table 3 Output mode of non-addressable water meter (type B)
parameter
Types of
"B1" "B2" "B3"
Process technology two-wire coding register three-wire coding register two-wire coding register
Signal unidirectional ASCII data frame protocol bidirectional ISO data frame protocol
Dataset type (see 5.3) Asynchronous or synchronous asynchronous
voltage
(if externally powered)
7V~17Vp-pAC
2.9V~6VDC (asynchronous)
5V~12VAC (synchronous)
AC power frequency
(if externally powered)
10kHz~30kHz -
Two-wire modulation depth >10% inductance -
Optical isolation -
Not applicable
Three-wire output low voltage -
< 0.9V
(for "public" pseudo open collectors
/ open drain, requires an external pull-up resistor)
Current consumption
< 3mA (asynchronous)
< 15mA (synchronous)
5.3 Dataset Types for Non-Addressable Water Meters
The data set type of the non-addressable water meter shall comply with the requirements of Table 4.
Table 4 Dataset Types for Non-Addressable Water Meters (Type B)
parameter
Data set type
“A” “S1” “S2”
Communication asynchronous external clock synchronization
Data transmission rate ≥ (300 ± 2.25) bit/s
0bit/s~2000bit/s
1 clock cycle per bit
1 clock cycle per bit, or 1200 bit/s
16 clock cycles per bit
Character format 1 starts, 7 data (LSB first), even parity, 1 stops
Two-wire data detection
Logic 0 = carrier interrupt
Logic 1 = NO action
Logic 0 = burst
Logic 1 = NO action
Logic 0 = two-way exchange
Logic 1 = NO bidirectional exchange
Three-wire data polarity logic 0 = output LOW logic 1 = output HIGH
Character interval ≤ 6bit time - -
Data frame ≥ 4 same data frame clock control, "real time" per frame
Frame interval < 2s < 200ms 8 "stop" bits
Clock "low" definition - 250μsmin, 1000μsmax, stability ± 25%
Clock "high" definition - >1000μs
Power interruption condition >500ms >200ms
5.4 Non-addressable V-frame data protocol
5.4.1 General
The non-addressable V-frame data protocol is variable in length and has the following format.
Applicable fields can have subfields. Typical subfields are as follows.
R--- field start sync character (uppercase letter);
C---data type (uppercase letter);
n---the actual reading of the water meter;
, --- subfield separator.
RCn is a mandatory field, and [, u[, f[, t]]] is an optional field.
The first field should be an S field, and the optional field is independent of the order.
In addition to specifying fields or subfields, manufacturers may include custom fields or subfields that may not be
The corresponding reading device is readable.
5.4.2 Non-addressable V-frame data protocol field definition
The non-addressable V-frame data protocol field definitions are shown in Table 5.
Table 5 Non-addressable V-frame data protocol field definitions
Field description format
S field = serial number ID (required) (manufacturer code/ID) f S ms
s=id, no more than 16 alphanumeric characters, 0~9, a~z
R field = reading
(optional)
(total amount or flow) f; RCn[, u[, f[, t]]] data type C = current data
Or.;RSn[,u[,f[,t]]]data type S=historical data
Or.;RHn[,u[,f,t]] data type H=maximum flow
Or.;RLn[,u[,f,t]] data type L=minimum flow
n=The actual reading of the water meter, no more than 16 numeric characters 0~9, allowing one to be reserved
Decimal point, "?" is the error indicator
u=Unit of measurement see Table 5.4.3
f = multiplier/divisor of unit coefficient, power of 10, from -9 to 9
t = time unit (for flow) see Table 7.4.3
A-field=diagnostic information (optional) (manufacturer-defined); Aa
a=no more than 16 ASCII characters
B-field = billing ID (optional) account information; Ba
a=no more than 16 ASCII characters
C-field = checksum (optional) (block check character); Ca
a=No more than 4 ASCII characters according to ISO 1155
J-field---free text (optional) (user-defined); Ja
a=no more than 300 ASCII characters
In addition to the above, valid ASCII characters are hexadecimal 20 to hexadecimal 7E, excluding the field separator ";" hex 3B
The message length has no maximum, but includes "V" and " \u003cCR\u003e "There should be no more than 63 fields."
5.4.3 Non-addressable V-frame data protocol configuration table
Table 6 and Table 7.
Table 6 Unit of measure code
Code unit of measure
1 cubic meter
2 liters
3 US gallons
4 inch gallons
5 cubic feet
6 acre feet
7 hectares
Table 7 time unit code
Code time unit
1 second
2 minutes
3 hours
4 days
5 years
5.5 Non-addressable two-wire asynchronous mode with sensor board and sensing probe readings
This is a two-wire interface through which an alternating voltage (or rectified alternating current) is applied to the registers of the data circuit to
Provides internal power and data carriers.
After power-on, using amplitude modulation, the register data is automatically read at a predetermined bit rate, and the data is transmitted in the same data frame.
Disconnecting the carrier indicates a logic 0, and disconnecting the carrier indicates a logic 1.
After the data transfer is completed, if the register is still powered, it can enter the passive state and receive the manufacturer's custom configuration.
make. Therefore, when re-reading, it is necessary to interrupt the power supply for a short period of time specified in 5.3, and then power up.
The typical configuration is shown in Figure 6.
Description.
1 --- reading sensor board;
2 --- cable;
3 --- register;
4 --- data line;
5 --- public line;
6 --- low pass filter;
7 --- digital data;
8 --- AC drive;
9 --- reading sensing probe (showing internal details);
10 --- This standard defines points;
N --- negative electrode;
P --- positive electrode;
VE---positive potential difference.
Figure 6. Non-addressable two-wire asynchronous mode typical configuration with sensor board and sensing probe readings
5.6 Non-addressable three-wire asynchronous mode for direct connection of repeater/bus nodes
This is a three-wire interface through which DC voltage is applied to registers on the power line to provide internal power.
After power-on, the data of the register is automatically read on the data circuit at a predetermined bit rate, and the number of data frames is transmitted in the same data frame.
according to. This is actually an “open drain” output, so a pull-up resistor is required external to the register.
The data consists of a low level representing a logic "0" and a high level representing a logic "1".
After the data transfer is completed, if the register is still powered, it can enter the passive state and receive the manufacturer's custom configuration.
make. Therefore, when re-reading, it is necessary to interrupt the power supply for a short period of time specified in 5.3, and then power up.
Compatible registers may also conform to the two-wire asynchronous mode.
In some process technology applications that use both two-wire and three-wire systems, the use of a built-in diode on the data circuit results in power up.
To avoid this, a transponder can be used to control the power supply of the pull-up resistor.
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