RC1140-MBUS

RC11X0-MBUS RADIOCRAFTS | Alldatasheet

Document overview

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• PDF pages: 16

Technical content

Features

• Embedded Wireless M-Bus protocol supporting EN 137 57-4:2012 mode S, T, C and R2
• 12.7 x 25.4 x 3.3 mm compact module for SMD mounti ng
• Easy to use UART interface for communication and c onfiguration
• Wide supply voltage range, 2.0 – 3.6 V
• Ultra low power modes for extended battery lifetim e
• 2 channels in mode S T and C, 10 channels in mode R2
• No external components except antenna
• Designed for EX compliance Quick Reference Data Parameter RC1 140 -MBUS RC1 160 -MBUS RC1 170 -MBUS RC1 170HP -MBUS Unit Number of channels 12 1 12 12 Max output power 10 10 10 27 dBm Current consumption, RX/TX 24 / 37 24 / 37 24 / 37 24 / 560 mA SLEEP current Typ 0.3 Typ 0.3 Typ 0.3 Typ 3.4 uA Temperature range -40 to +85 -40 to +85 -40 to +85 -40 to +85 °C Conforms with EN300220, EN301489, Anatel Resoution 506- 2008 Target market World wide Russia India India

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 2 of 16 RC11X0-MBUS Embedded Firmware Solutions The RC11X0-MBUS modules are available with different embedded firmware solutions, implementing specific feature sets on the same hardware. Detailed information on how to use the different feature set is described in the RC11X0-MBUS User Manual. See the Radiocrafts’ webpage for latest revision. Typical application circuit See page 7 for additional schematic information regarding recommended Reset and Power supply filtering, and how to include firmware upgrade connector. Wireless M-Bus Modem The standard RC11X0-MBUS module acts like a wireless M-Bus modem with a UART interface. The embedded protocol transmits and receives the wireless M-Bus data packets based on application messages from an external source (the meter or the concentrator). The module is configured through its UART interface using a simple command set. Configuration parameters are stored in non-volatile memory. The module can be set in Sleep mode with very low current consumption, and wake up on a UART command. See MBUS User Manual for details about the embedded wireless MBUS protocol from Radiocrafts. Meter RC11X0-MBUS (modem) RC11X0-MBUS (modem) UART to: RS232 RS485 USB Ethernet UART RXD TXD GND RTS CTS CONFIG TXD RXD GND GND VCC RESET NC GND RF GND 2.0 – 3.6 V Antenna To host meter or RS232/422/485 driver NC Optional NC

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 3 of 16 RF Frequency, Output Power Levels and Data Rates The following table shows the available RF channels and their corresponding frequencies, nominal output power levels and available data rates. The combination of frequency and data rate is determined by the M-Bus mode. For article numbers with R mode, the RF channel selection must be selected between 1-10. The module automatically updates RF Channel 11 and 12 for S, T and C mode. Model RF ch annel Output power RC1 140 - MBUS 1-10: f where N is the channel number 11 (used in S, T2 mode): f RF =433.500 MHz 12 (used in T1 and T2 mode): f RF =434.475 MHz C mode frequency same as T mode Factory setting: 1: 433.030 MHz (apply for R mode only) 1: -20 dBm 2: -10 dBm 3: 0 dBm 4: 5 dBm 5: 10 dBm RC1 160 - MBUS 1-10 (normally R mode, not applicable in this variant) 11 (used in S, T2 mode): f RF =868.95 MHz 12 (used in T1 and T2 mode): f RF =868.95 MHz C mode frequency same as T mode 1: -20 dBm 2: -10 dBm 3: 0 dBm 4: 5 dBm 5: 10 dBm RC1 170(HP) -MBUS 1-10: f RF =865.1+(N-1)*0.2 MHz where N is the channel number 11 (used in S, T2 mode): f RF =865.500 MHz 12 (used in T1 and T2 mode): f RF =865.500 MHz C mode frequency same as T mode. T og C mode may not meet local regulations due to bandwidth limitations. See OMS specifications for details. Factory setting: 1: 865.1 MHz (apply for R mode only) 1: -20 dBm (0 dBm) 2: -10 dBm (10 dBm) 3: 0 dBm (14 dBm) 4: 5 dBm (20 dBm) 5: 10 dBm (27 dBm) (Numbers in brackets are for HP- version) Numbers in bold are default settings. For more details on changing the RF channel, output power or M-Bus mode, refer to the MBUS User Manual.

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 4 of 16 Block Diagram Circuit Description The module contains a communication controller with embedded Wireless M-Bus protocol software and a high performance RF transceiver. As an option the module can support a real time clock oscillator and EEPROM memory. The communication controller handles the radio packet protocol, the UART interface and controls the RF transceiver. Data to be sent by the host is received at the RXD pin and buffered in the communication controller. The data packet is then assembled with preamble, start-of-frame delimited (SOF), manufacturer ID, unique address information and CRC check sums before it is transmitted on RF. The RF transceiver modulates the data to be transmitted on RF frequency, and demodulates data that are received. Digital signal processing technology is used to enhance sensitivity and selectivity. Received data are checked for correct CRC by the communication controller. If no CRC errors were detected, the data packet is sent to the host on the TXD line. The data format is configurable, and optionally an RSSI value (signal strength of received packet) can be added to the message. The asynchronous UART interface consists of RXD and TXD. Optionally CTS or RTS can be used for hardware handshake flow control. When a 00h value is sent as the first byte (replacing the Length byte), or the CONFIG pin is asserted, the module enters configuration mode and the communication controller interprets data received on the RXD pin as configuration commands. There are commands to change the radio channel, the output power, etc. Permanent changes of the configuration is also possible and are then stored in internal non-volatile memory (Flash). The supply voltage is connected to the VCC pin. The module contains an internal voltage regulator for the RF transceiver and can therefore operate over a wide supply voltage range. Wireless M-Bus protocol Wireless M-Bus RF Tranceiver 8-bit MCU M-Bus Application (option) UART interface 2.0 - 3.9 V 4kB EEPROM (option) 32 kHz Real Time Clock (option)

32 MHz

Pulse input (option)

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 5 of 16 The module can be set in Sleep mode by UART commands to reduce the power consumption to a minimum. Pin Assignment GND CTS RTS CONFIG TXD RXD GND GND VCC RESET NC GND RF GND 15 16 17 18 19 20 21 22 30 29 28 27 26 25 24 23 Pin Description Pin no Pin name Description Equivalent circuit

1 GND System ground GND

2 CTS UART Clear to Send

3 RTS UART Request to Send

4 CONFIG Configuration Enable. Active low. Should normally be set high

5 TXD UART TX Data

6 RXD UART RX Data

Use external max 8k2 kohm pull- up resistor if connected to an open collector output from a host MCU or other high impedance circuitry like level shifters.

7 GND System ground GND

8 GND System ground

Output: 20k Input: VCC

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 6 of 16

9 RF RF I/O connection to antenna

10 GND System ground GND

11 NC Not connected

12 RESET Main reset (active low). Should normally be left open. Internal 12 kΩ pull-up resistor. Note: For HP versions, an additional 2k7 series resistor and a 1nF shunt capacitor is added directly on the RESET pin inside the module 13 VCC Supply voltage input. Internally regulated.

14 GND System ground GND

15-22 RESERVED Test pins or pins reserved for future use. Do not connect! 23-30 RESERVED Test pins or pins reserved for future use. Do not connect! Note 1: For UART communication the TXD and RXD are used for serial data, and CTS and RTS for flow control (optional). RXD should be high when not sending data to the module. Note 2: The CONFIG pin can be used to enter configuration mode (change of default settings) as an alternative to the 0x00 command. Active low. Note 3: Other digital interfaces may be specified upon request. 1.8 V VREG VREG 2u2 VCC VCC RESET 12k 10k RF

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 7 of 16 Application circuit A typical application circuit is shown where a MCU is connected to the Radiocrafts module. In normal cases the UART (CTS/RTS is optional) and RESET line is connected to a host MCU running the application. CONFIG is optional since a UART command can replace the CONFIG pin on the MBUS modules. Pin 29/30 are LED drivers and D1/D2 can be mounted (optional) for debugging (State information). MCU considerations Some additional external components is needed depending on MCU output driver properties connected to the Radiocrafts module. If the RESET is driven by a push-pull output, an additional 0 ohm series resistor (R4) shall be inserted as shown in the figure, to allow an external programmer used for firmware upgrade to assert Reset low. During firmware upgrade, R4 must in this case be removed. In noisy surroundings and where RESET is not driven by a push-pull output, it is recommended to add an external pull-up on RESET using a 5k6 resistor (R3). If the pull-up is stronger the external programmer used for firmware upgrade will not be able to assert RESET low. In noisy surroundings and where RXD is not driven by a push-pull output, it is recommended to add an external pull-up on RXD using a 5k6 resistor (R3).

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 8 of 16 Reset filter To minimize effect of noise on the Reset-line, the RESET pin on the module (pin 12) must be connected to an external circuitry via an RC-network. It is recommended to connect RESET to a microcontroller I/O-pin. The reset filter should be placed as close as possible to the RESET pin of the module. Power Supply Noisy external circuitry may under certain scenarios affect the transmitted signal on RC1180- MBUS and precaution should be taken for EU R&TTE conformity. Example of circuits that can generate noise on the RC1180-MBUS transmitted spectrum may be DC/DC converters and some level converters like RS232 and RS485. To increase spectrum margin it is important to add an EMI filter bead (L1) on the VCC pin of the RC1180-MBUS module. Alternatively, the RC1180-MBUS may be powered (RC_VCC) from a separate voltage regulator. This will ensure that potential switching noise is filtered out from the power supply (RC_VCC) to the RC1180-MBUS. Component Manufacturer Pa rt number EMI filter bead (L1) Murata BLM11A102S, ordering co de BLM18xx102xN1D Programming Interface For future firmware updates and possible custom variants it is recommended to include a 2x5 pins programming connector to the module programming pins. The connector should be a 1.27 mm pitch pin-row (same pitch in both directions), SMD or through-hole version, with the connections shown below. RXD/TXD lines is not in use for firmware upgrade, but is included on spare pins on the connector for debugging purposes.

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 9 of 16 Antenna Connection The antenna should be connected to the RF pin. The RF pin is matched to 50 Ohm. If the antenna connector is placed away from the module at the motherboard, the track between the RF pin and the connector should be a 50 Ohm transmission line. On a two layer board made of FR4 the width of a microstrip transmission line should be 1.8 times the thickness of the board, assuming a dielectric constant of 4.8. The line should be run at the top of the board, and the bottom side should be a ground plane. Example: For a 1.6 mm thick FR4 board, the width of the trace on the top side should be 1.8 x 1.6 mm = 2.88 mm. The simplest antenna to use is the quarter wave whip antenna. A quarter wave whip antenna above a ground plane yields 37 Ohm impedance and a matching circuit for 50 Ohm are usually not required. A PCB antenna can be made as a copper track where the ground plane is removed on the back side. The rest of the PCB board should have a ground plane as large as possible, preferably as large as the antenna itself, to make it act as a counterweight to the antenna. If the track is shorter than a quarter of a wavelength, the antenna should be matched to 50 ohms. The lengths of a quarter wave antenna for different operational frequencies are given in the table below. Frequency [MHz] Length [cm] 433 16.4 865 8.2 866 8.2 Regulatory Compliance Information The use of RF frequencies and maximum allowed RF power is limited by national regulations. The RC11X0-MBUS has been designed to comply with the R&TTE directive 1999/5/EC. The relevant regulations are subject to change. Radiocrafts AS do not take responsibility for the validity and accuracy of the understanding of the regulations referred above. Radiocrafts only guarantee that this product meets the specifications in this document. Radiocrafts is exempt from any responsibilities related to regulatory compliance.

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 10 of 16 PCB Layout Recommendations The recommended layout pads for the module are shown in the figure below. All dimensions are in thousands of an inch (mil). The circle in upper left corner is an orientation mark only, and should not be a part of the copper pattern. A PCB with two or more layers and with a solid ground plane in one of the inner- or bottom layer(s) is recommended. All GND-pins of the module shall be connected to this ground plane with vias with shortest possible routing, one via per GND-pin. On the back side of the module there are several test pads. These test pads shall not be connected, and the area underneath the module should be covered with solder resist. If any routing or vias is required under the module, the routing and vias must be covered with solder resist to prevent short circuiting of the test pads. It is recommended that vias are tented. Reserved pins should be soldered to the pads but the pads must be left floating. Note that Radiocrafts technical support team is available for free-of-charge schematic and layout review of your design.

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 11 of 16 Mechanical Drawing Top view Side view Bottom view End view Drawings are not to scale Radiocrafts 25.4 mm 12.7 mm 8.5 mm 13.6 mm 0.9 mm 1.4 mm 2.1 mm 2.1 mm 0.38 mm 23.6 mm 10.9 mm 1.9 mm 3.2 mm RCXXXX YYYYWW NN A.BB Part nr: RCXXXX Lot code: YYYYWW (YYYY=prod. year, WW= prod. week) Hardware revision: A.BB Approval marking: NN = CE, FCC or others 3.3 mm 1.9 m m 3.2 m m Alignment marking: On the top side there are 8 alignment markers which align with the corresponding pad on the bottom side. Mechanical Dimensions The module size is 12.7 x 25.4 x 3.3 mm. Carrier Tape and Reel Specification Carrier tape and reel is in accordance with EIA Specification 481. Tape width Component pitch Hole pitch Reel diameter Units per reel 44 mm 16 mm 4 mm 13” Max 1000 Soldering Profile Recommendation JEDEC standard IPC/JEDEC J-STD-020D.1 (page 7 and 8), Pb-Free Assembly is recommended. The standard requires that the heat dissipated in the "surroundings" on the PCB is taken into account. The peak temperature should be adjusted so that it is within the window specified in the standard for the actual motherboard. Aperture for paste stencil is normally areal-reduced by 20-35%. A nominal stencil thickness of 0.1 - 0.12 mm is recommended. Consult your production facility for best experience aperture reduction.

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 12 of 16 Absolute Maximum Ratings Parameter Min Max Unit Caution ! ESD sensitive device. Precaution should be used when handling the device in order to prevent permanent damage. Supply voltage, VCC -0.3 3.9 V Voltage on any pin -0.3 VCC+0.3V Max 3.9 V V Input RF level 10 dBm Storage temperature -50 150 °C Operating temperature -40 85 °C Under no circumstances the absolute maximum ratings given above should be violated. Stress exceeding one or more of the limiting values may cause permanent damage to the device. Fresh 3.6V Li batteries normally have a higher open circuit voltage than the nominal 3.6V, but can still be used to power the module as long as it is not exceeding the absolute maximum rating (3.9V). When the module operates in IDLE/RX/TX the loaded battery voltage will usually drop below 3.6V, which is inside the operation voltage range (2.0V – 3.6V). Electrical Specifications T=25 °C, VCC = 3.0V if nothing else stated. Parameter Min Typ. Max Unit Condition / Note Operating frequency 433.05 868.7 865.1 434.7 869.2 866.9 MHz MHz RC1140-MBUS RC1160-MBUS RC1170(HP)-MBUS Number of channels RC1140-MBUS RC1160-MBUS RC1170(HP)-MBUS Input/output impedance Ohm Chip rate S-mode T-mode R2-mode 32.768 100 4.8 kchip/s Data rate S-mode T-mode R2-mode 16.384 66.67 2.4 kbit/s S and R2 mode use Manchester coding. T mode uses 3-of-6 coding. T2 use a combination of both. Frequency stability S and T mode R2 mode +/-40 +/-20 ppm Including 10 years of aging. TBD limited temperature range for R2 mode Frequency stability aging 1 ppm/year Starting aft er 10 years Transmit power -20 (0) (27) (28) dBm Typical values are for default settings. (For High Power version) FSK deviation S-mode T-mode R2-mode +/- 50 +/- 50 +/- 6 kHz Adjacent channel power TBD dBc Occupied bandwidth TBD kHz 99.5% Spurious emission, TX RX1140 < 1 GHz > 1 GHz RC1170/RC1160 < 1 GHz > 1 GHz -49 -41 -36 -30 dBm

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 13 of 16 Sensitivity S-mode T-mode R2-mode -100 -100 -105 -102 -101 -106 dBm Measured at 1% BER / 80% PER of 20 byte packets. HP versions has typical 1 dB less sensitivity Adjacent channel rejection 29 dB Alternate channel selectivity 53 dB Image channel rejection 28 dB Blocking / Interferer rejection / desensitization +/- 1 MHz +/- 2 MHz +/- 5 MHz +/- 10 MHz dB Wanted signal 3 dB above sensitivity level, CW interferer. (Minimum numbers corresponds to class 2 receiver requirements in EN300220). Saturation -14 dBm Spurious emission, RX -57 dBm Supply voltage 2.0 3.6 V 2.7 – 3.3V for HP versions Current consumption, RX/IDLE UART IDLE 1.7 3.6 mA Apply over entire supply voltage range UART IDLE current depends on UART Baud Rate. Max value for baud rates >14.4 kbaud and 1.7 ma for lower baud rates Current consumption, TX RF_POWER=5, 10 dBm RF_POWER=4, 5 dBm RF_POWER=3, 1 dBm RF_POWER=2, -10 dBm RF_POWER=1, -20 dBm mA Apply over entire supply voltage range Current consumption, TX High Power versions RF_POWER=5, 27 dBm RF_POWER=4, 25 dBm RF_POWER=3, 14 dBm RF_POWER=2, 10 dBm RF_POWER=1, 0 dBm 560 530 Current consumption, SLEEP 0.1 (3.4) 1.0 (10) uA (For High Power versions) Digital I/O Input logic level, low Input logic level, high Output logic level, low (1µA) Output logic level, high(-1µA) 70 % TBD 30 % TBD VCC V Of VCC Of VCC RESET pin Input logic level, low Input logic level, high 70 % 30 % V Minimum 250 ns pulse width UART Baud Rate tolerance +/- 2 % UART receiver and transmitter Configuration memory write cycles

1000 The guaranteed number of

write cycles using the ‘M’ command is limited

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 14 of 16 Document Revision History Document Revision Changes

2.10 First release for RC1140-MBUS

2.20 RC1170(HP)-MBUS and RC1160-MBUS included

2.21 Minor corrections

2.22 - RC1140-MBUS frequency update - RC1160-MBUS frequency update - C mode info added - Minor corrections - improved application circuit 2.23 - RC1140-MBUS frequency correction - RC1170-MBUS frequency correction 2.24 - RC1140 HW 2.20 improvement on harmonics incl uded - Absolut max voltage vs Max Supply voltage clarification Product Status and Definitions Current Status Data Sheet Identification Product Status Definition Advance Information Planned or under development This data sheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary Engineering Samples and First Production This data sheet contains preliminary data, and supplementary data will be published at a later date. Radiocrafts reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. X No Identification Noted Full Production This data sheet contains final specifications. Radiocrafts reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Obsolete Not in Production This data sheet contain s specifications on a product that has been discontinued by Radiocrafts. The data sheet is printed for reference information only.

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 15 of 16 APPENDIX A (OPTIONAL CUSTOMER SPECIFIC VERSIONS, AVAILABLE ON REQUEST) Full wireless M-Bus application As an option, a full wireless M-Bus application layer can be integrated in the module based on customer specification . In this case all the application layer protocol and timing will be handled internally by the module. An S0 (1-pin) pulse interface and/or a serial interface can be used to read out values from any meter. Since the protocol for reading out meter information may differ from meter to meter, the embedded firmware is customized for each different meter and application. These are some of the features that can be used in a customized application:

• 4 kB EEPROM for storing meter data
• 32 kHz oscillator for real time clock time stamps
• AES-128 encryption
• Sleep timers
• Message acknowledgement and re-transmissions
• Digital I/O pins for tamper detection, alarms and installation
• A/D converter for analogue sensors Please see chapter “Programming Interface” for a de scription of how to include a programming connector in your PCB layout to be able to receive updated firmware code from Radiocrafts in a pilot product phase. One-Button Installation Due to the two-way transceiver capability of the RC11X0-MBUS module, a simple and robust installation procedure can be used even for S1 and T1 (one-way) operation modes. In a full M-Bus application, the Radiocraft’s unique “one-button” installation feature simplifies the installation and reduces installation time substantially. Using an external push-button and a LED connected to dedicated pins on the module, the installation procedure is very simple:
• Press the install button on concentrator
• Press the install button on meter
• Wait 5 seconds for two way communication between m eter and concentrator
• See installation LED go on for OK installation (Bl inking for error during installation) Please contact Radiocrafts for customer specific requests.

Embedded Wireless Solutions RC11X0-MBUS  2015 Radiocrafts AS RC11X0-MBUS Data Sheet (rev. 2. 24) Page 16 of 16 Disclaimer Radiocrafts AS believes the information contained herein is correct and accurate at the time of this printing. However, Radiocrafts AS reserves the right to make changes t o this product without notice. Radiocrafts AS does not assume any responsibility for the use of the described pro duct; neither does it convey any license under its patent rights, or the rights of others. The latest updates are available at the Radiocrafts website or by contacting Radiocrafts directly. As far as possible, major changes of product specif ications and functionality, will be stated in produ ct specific Errata Notes published at the Radiocrafts website. Custome rs are encouraged to check regularly for the most r ecent updates on products and support tools. Trademarks RC232™ is a trademark of Radiocrafts AS. The RC232™ Embedded RF Protocol is used in a range of products from Radiocrafts. The protocol handles host communicatio n, data buffering, error check, addressing and broa dcasting. It supports point-to-point, point-to-multipoint and peer-to-peer network topologies. All other trademarks, registered trademarks and product names are the sole property of their respective owners. Life Support Policy This Radiocrafts product is not designed for use in life support appliances, devices, or other systems where malfunction can reasonably be expected to result in significant personal injury to the user, or as a c ritical component in any life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its saf ety or effectiveness. Radiocrafts AS customers using or selling these products for use in such applications do so at thei r own risk and agree to fully indemnify Radiocrafts AS for any damages resulting from any improper use or sale. © 2015, Radiocrafts AS. All rights reserved. Contact Information Web site: www.radiocrafts.com Address: Radiocrafts AS Sandakerveien 64 NO-0484 OSLO NORWAY Tel: +47 4000 5195 Fax: +47 22 71 29 15 E-mail: radiocrafts@radiocrafts.com sales@radiocrafts.com support@radiocrafts.com