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Summary of Contents for Elvaco CMi4140
- Page 1 CMi4140 User’s Manual English v1.1 CMi4140 User’s Manual English...
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Page 2: Table Of Contents
CMi4140 User’s Manual English Contents DOCUMENT NOTES ..................... 3 ..................3 OPYRIGHT AND TRADEMARK ........................3 ONTACTS IMPORTANT USAGE AND SAFETY INFORMATION ........... 4 USING THIS MANUAL ....................5 ....................5 URPOSE AND AUDIENCE ...................... 5 NLINE RESOURCES ........................5 YMBOLS INTRODUCTION ...................... -
Page 3: Document Notes
Copyright and trademark © 2020, Elvaco AB. All rights reserved. No part of the contents of this manual may be transmitted or reproduced in any form by any means without the written permission of Elvaco AB. Printed in Sweden. -
Page 4: Important Usage And Safety Information
Failure to comply with these precautions violates safety standards of design, manufacture and intended use of the product. Elvaco AB assumes no liability for customer’s failure to comply with these precautions. -
Page 5: Using This Manual
CMi4140 User’s Manual English Using this manual Purpose and audience This manual provides all information needed to mount, deploy and configure CMi4140 and targets installers and system integrators. Online resources To download the latest version of this user’s manual, or to find information in other languages, please visit http://www.elvaco.com/. -
Page 6: Introduction
With Elvaco’s One-Touch Commissioning (OTC), deployment, configuration and key transferring can be performed in a secure and flexible way. Use the Elvaco OTC App to enter your desired settings and place your phone next to the meter. New settings will be applied via NFC. -
Page 7: Getting Started
CMi4140 User’s Manual English Getting started Purpose This chapter provides instructions on how to get started with the CMi4140. After reading and carefully following each step of this chapter, your meter connectivity module should be mounted and connected to the LoRaWAN network. - Page 8 Read module status via meter display In addition to the Elvaco OTC App, the current status of the module can be read via the meter display. To retrieve the status of the module via the meter display, enter the tech loop and of the meter display and request the status information of the module.
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Page 9: Administration Reference
(OTC) documentation, available on the Elvaco website. Configuration options CMi4140 is configured via the Elvaco OTC App which can be downloaded in Google Play. It uses NFC to transfer settings to the module. Downlink may also be used to for some applications, see section 6.8 Downlink for more information. -
Page 10: Time Handling
OTC App. Adaptive data rate (ADR) CMi4140 supports Adaptive Data Rate (ADR), part of the LoRaWAN standard, where the network server determines the optimal rate of communication for the module based on current signal conditions. In the best radio conditions, the module will use its highest data rate (DR5) in order to be as energy efficient as possible. -
Page 11: Transmit Interval
If EcoMode has been disabled, guarantees about battery-life is no longer valid (even if EcoMode is activated later). Message formats CMi4140 has seven different message formats: Standard, Compact, JSON, Scheduled – Daily redundant, Scheduled – Extended, Combined heat/cooling and Heat Intelligence. Each message format will be described in detail in this section. -
Page 12: Structure And Payload
CMi4140 User’s Manual English Figure 1: CMi4140 M-Bus message structure For message format JSON, the data is presented as ASCII. Field Size Description Message 1 byte 0x15 = Standard format 0x16 = Compact identifier 0x17 = JSON 0x18 = Scheduled – Daily redundant... - Page 13 CMi4140 User’s Manual English 040Fxxxxxxxx = xxxxxxxx * 10 MJ 04FB0Dxxxxxxxx = xxxxxxxx MCal 04FB0Exxxxxxxx = xxxxxxxx * 10 MCal 04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal Volume 6 bytes INT32 Volume (m 0413xxxxxxxx = xxxxxxxx * 0.001 m 0414xxxxxxxx = xxxxxxxx * 0.01 m 0415xxxxxxxx = xxxxxxxx * 0.1 m...
- Page 14 CMi4140 User’s Manual English Figure 3: Structure, message format Compact Field Size Data type Description Message 1 byte 0x16 (Compact) format identifier Heat 6-7 bytes INT32 Energy consumption (Wh, J, Cal) energy E1 / 0403xxxxxxxx = xxxxxxxx Wh Cooling 0404xxxxxxxx = xxxxxxxx * 10 Wh...
- Page 15 CMi4140 User’s Manual English For message formats of type “Scheduled” (Scheduled – Daily redundant and Scheduled – Extended), two types of messages will be transmitted from the module - a clock message and a data message. The difference between the two is described in Table 9. A detailed description of the payload of the clock message is provided in Table 10.
- Page 16 CMi4140 User’s Manual English Field Size Data type Description Message 1 byte 0x18 (Scheduled-daily redundant) format identifier Heat energy 6-7 bytes INT32 Energy consumption (Wh, J, Cal) E1 / Cooling Energy E3 0403xxxxxxxx = xxxxxxxx Wh 0404xxxxxxxx = xxxxxxxx * 10 Wh...
- Page 17 CMi4140 User’s Manual English cooling 4403xxxxxxxx = xxxxxxxx Wh energy at 4404xxxxxxxx = xxxxxxxx *10 Wh 24:00 4405xxxxxxxx = xxxxxxxx *100 Wh 4406xxxxxxxx = xxxxxxxx kWh 4407xxxxxxxx = xxxxxxxx * 10 kWh 440Exxxxxxxx = xxxxxxxx MJ 440Fxxxxxxxx = xxxxxxxx * 10 MJ...
- Page 18 CMi4140 User’s Manual English Power / Flow 12 bytes INT64 Byte 0-2 = DIF/VIF codes, 0x07FFA0 / Fw temp / Byte 3 = Scaling of Power/Flow Rt temp -Bit 6.4 (n), 10 W, n = 0..7 -Bit 2..0 (m), 10 /h, m = 0..7...
- Page 19 CMi4140 User’s Manual English 0407xxxxxxxx = xxxxxxxx * 10 kWh 040Exxxxxxxx = xxxxxxxx MJ 040Fxxxxxxxx = xxxxxxxx * 10 MJ 04FB0Dxxxxxxxx = xxxxxxxx MCal 04FB0Exxxxxxxx = xxxxxxxx * 10 MCal 04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal Cooling 8-9 bytes INT32...
- Page 20 CMi4140 User’s Manual English Message 1 byte 0x1B (Heat intelligence) format identifier Heat energy 6-7 bytes INT32 Energy consumption (Wh, J, Cal) 0403xxxxxxxx = xxxxxxxx Wh 0404xxxxxxxx = xxxxxxxx * 10 Wh 0405xxxxxxxx = xxxxxxxx * 100 Wh 0406xxxxxxxx = xxxxxxxx kWh...
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Page 21: Meter Communication Error Message
Downlink CMi4140 supports configuration via downlink, i.e. sending commands to an end-device via the LoRaWAN network. Note that this feature should only be used sparingly due to bandwidth consideration. Communication via downlink is sent on port 2 and can only be made in a short window after an uplink transmission from module to server. - Page 22 CMi4140 User’s Manual English (Subtracts 60 seconds from the current time) 0xNumber of minutes* 0x17023C00 (Sets the UTC offset 0x17 0x02 (lsByte -> msByte) UTC offset to +60 minutes) *Negative numbers 0x17023C80 (Sets the supported. UTC offset to -60 minutes)
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Page 23: Technical Specifications
Class A Bi-directional LoRa version 1.0.2 Activation OTAA or ABP 250 – 5470 bit/s Data rate DR0 - DR5 User interface Configuration NFC via Elvaco OTC app or downlink data CMi4140 User’s Manual English page | 23 (26) [2020-06] V1.1... -
Page 24: Type Approvals
CMi4140 User’s Manual English Type approvals CMi4140 is designed to comply with the directives and standards listed below. Approval Description EN 301 489-1, EN 309 489-3 LoRa Alliance® LoRaWAN® Certified CMi4140 User’s Manual English page | 24 (26) [2020-06] V1.1... -
Page 25: Document History
CMi4140 User’s Manual English Document history Versions Version Date Description Author V0.1 2019-03 PoC version Anton Larsson V0.2 2019-10 Evaluation samples version Anton Larsson V1.0 2019-12 Commercial release version Anton Larsson V1.1 2020-06 Commercial release v1.1 David Svensson CMi4140 User’s Manual English... -
Page 26: References
CMi4140 User’s Manual English 10 References 10.1 Terms and abbreviations Abbreviation Description Data Information Block Data Information Field Value Information Field Meter Connectivity Module 10.2 Number representation • Decimal numbers are represented as normal number, i.e. 10 (ten). • Hexadecimal numbers are represented with prefix 0x, i.e. 0x0A (ten) •...
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