RC1180-MBUS
Contents
1. 1 byte 1 byte n bytes Length Cl APP_LAYER From module to other with meter address 1 byte 1 byte 2 bytes 6 bytes 1 byte n bytes 1 byte Length C ManID Address Cl APP_LAYER RSSI opt From module to other without meter address 1 byte 1 byte n bytes 1 byte Length Cl APP_LAYER RSSI opt Similar commands are available for configuration via the UART interface 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 3 of 16 Radiocrafts 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 R mode the RF channel selection must be selected between 1 10 RC1180 1 10 1 20 dBm 1 4 8 kchip s MBUS frr 868 03 N 1 0 06 MHz 2 10 dBm 2 32 768 kchip s where N is the channel number 3 0 dBm 3 100 kchip s 4 5 dBm 11 used in S and T2 mode 5 9 dBm frr 868 300 MHz 12 used in T1 and T2 mode frr 868 950 MHz Factory setting 1 868 030 MHz apply for R mode only For more details on changing the RF channel output power or M Bus mode refer to the MBUS User Manual RSSI Reading The module provide a digital Received Signal Strength Indicator RSSI through the S command or attached to the received messages The RSSI value2. Image channel rejection 28 dB Blocking Interferer rejection desensitization dB Wanted signal 3 dB above 1 MHz 30 43 sensitivity level CW 2 MHz 35 49 interferer 5 MHz 50 68 Minimum numbers 10 MHz 60 72 corresponds to class 2 receiver requirements in EN300220 Saturation 14 dBm Input IP3 TBD dBm Spurious emission RX 57 dBm Supply voltage 2 0 3 6 V Current consumption RX IDLE Apply over entire supply 24 mA voltage range Current consumption TX Apply over entire supply RF_POWER 5 9 dBm 37 mA voltage range RF_POWER 4 5 dBm 32 RF_POWER 3 1 dBm 24 RF_POWERZ22 10 dBm 19 RF_POWER 1 20 dBm 18 Current consumption SLEEP 0 1 1 0 uA Digital I O Input logic level low 30 V Of VCC Input logic level high 70 Of VCC Output logic level low 1A 0 TBD Output logic level high 1 A TBD VCC RESET pin Minimum 250 ns pulse Input logic level low 30 V width Input logic level high 70 UART Baud Rate tolerance t 2 UART receiver and transmitter Configuration memory write 1000 The guaranteed number of cycles write cycles using the M command is limited 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 14 of 16 Radiocraits Embedded Wireless Solutions RC1180 MBUS Document Revision History First release Pin Assignment and Pin Description Pin 2 RTS Pin 3 CTS Changed equivalent circuit to be pulled to VCC not VDD on relevant p
3. 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 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 6 of 16 Radiocrafts The module can be set in Sleep mode to reduce the power consumption to a minimum The module is then woken up by sending a FFh byte on the UART Sleep mode can be entered by sending a sleep command or by configuring the module to always return to Sleep mode after data transmission S1 and T1 modes Pin Assignment GND GND CTS vcc RTS RESET CONFIG NG TxD GND RXD RE OND GND Pin Description 1 GND System ground GND o 2 CTS UART Clear to Send TA 3 RTS UART Request to Send Input 4 CONFIG Configuration Enable Active low ac Should normally be set high 20k 5 TXD UART TX Data o L 6 RXD UART RX Data VCC Output 7 GND System ground GND o 8 GND System ground 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 7 of 16 Radiocraits RC1180 MBUS 9 RF RF I O connection to antenna RF o 10k 10 GND System ground GND POR 11 NC Not connected 7 12 RESET Main reset active low Should
4. 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 868 8 2 Regulatory Compliance Information The use of RF frequencies and maximum allowed RF power is limited by national regulations The RC1180 MBUS has been designed to comply with the R amp TTE directive 1999 5 EC According to R amp TTE directives it is the responsibility of Radiocrafts customers i e RC1180 MBUS end user to check that the host product i e final product is compliant with R amp TTE essential requirements The use of a CE marked radio module can avoid re certification of the final product provided that th
5. 01 489 EN 60950 Designed for EX compliance Quick Reference Data Unit Frequency bands 868 0 870 0 MHz Number of channels 12 Data rate 4 8 32 768 100 kchip s Max output power 9 dBm Sensitivity R S T 106 102 101 dBm Supply voltage 2 0 3 6 Volt Current consumption RX TX 24 37 mA Current consumption SLEEP Typ 0 3 uA Temperature range S and T mode 40 to 85 C PRELIMINARY INFORMATION Specifications and information herein are subject to change without notice 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 1 of 16 Radiocraits RC1180 MBUS Embedded Firmware Solutions The RC1180 MBUS module is available with different embedded firmware solutions implementing specific feature sets The hardware is the same for all solutions and the different feature sets available are listed in the table below Detailed information on how to use the different feature set is described in the RC1180 MBUS User Manual General Basic Wireless M Bus functions RC1180 MBUS Added features for NTA 8130 compliance for use in the Netherlands Network role Master or Slave Master or Slave Modes 1 S2 T1 T2 R2 S1 S2 T1 T2 R2 Encryption No must be handled AES 128 according to externally NTA8130 Installation mode No must be handled Yes according to NTA 8130 externally Filter function No receives any M Bus packet Filtering must b
6. Radiocrafts Wireless M Bus Multi Mode RF Transceiver Module EN 13757 4 2005 Product Description The RC1180 MBUS RF Transceiver Module is a compact surface mounted high performance module with embedded Wireless M Bus protocol The module has a UART interface for serial communication and configuration and a one pin antenna connection The module is pre certified for operation under the European radio regulations for license free use and measures only 12 7 x 25 4 x 3 3 mm with shielding When used with quarter wave antennas a line of sight range of 500 600 meter can be achieved The RC1180 MBUS meets the Wireless M Bus specification S T and R2 modes and operates in 12 channels in the 868 MHz frequency band Applications Wireless M Bus Automatic Meter Reading AMR Advanced Metering Infrastructure AMI Electricity meters Gas and Water meters Heat meters Heat cost allocators Readers and concentrators Features Embedded Wireless M Bus protocol supporting EN 13757 4 2005 mode S T and R2 12 7 x 25 4 x 3 3 mm compact module for SMD mounting Easy to use UART interface for communication and configuration Wide supply voltage range 2 0 3 6 V Ultra low power modes for extended battery lifetime 2 channels 868 3 868 95 MHz in mode S and T 10 channels in mode R2 868 03 n x 0 06 MHz No external components except antenna Configurable Manufacturer ID and serial number Conforms with EU R amp TTE directive EN 300 220 EN 3
7. VCC normally be left open Internal 100 kQ pull up resistor d 12k RESET o r 13 VCC Supply voltage input Internally regulated ao 48V vog VREG a 2u2 14 GND System ground GND o 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 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 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 8 of 16 Radiocrafts Embedded Wireless Solutions RC1180 MBUS Power Supply Noisy external circuitry may under certain scenarios affect the transmitted signal on RC1180 MBUS and precaution should be taken for EU R amp 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 on the VCC pin of the RC11XX RC232 module Alternatively the RC1180 MBUS may be powered form a separate voltage regulator This will ensure that potential switching noise is filtered out from the power supply to the RC1180 MBUS A block diag
8. appended to a received message is the signal strength of that received packet The RSSI value is a 8 bit character one byte indicating the current input signal strength or the signal strength of the received message The signal strength can be used as an indication of fading margin or as a carrier sense signal to avoid collisions The RSSI value increases with increased input signal strength in 0 5 dB steps Input signal strength is given by typ P RSSI 2 dBm 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 4 of 16 Radiocrafts Full wireless M Bus application optional custom specific version As an option a full wireless M Bus application layer can be integrated in the module based on customer specification n this case all the application layer protocol and timing will be handled internally by the module An SO 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 e 4kB 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 Ple
9. ase see chapter Programming Interface for a description 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 Buiton Installation optional custom specific version Due to the two way transceiver capability of the RC1180 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 Radiocrafts 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 meter and concentrator See installation LED go on for OK installation Blinking for error during installation Please contact Radiocrafts for custom specific requests 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 5 of 16 Radiocrafts Block Diagram 2 0 3 6 V 8 bit MCU vA Pulse input option M Bus Application Wireless M Bus RF Tranceiver Wireless M Bus UART interface protocol 4kB EEPROM Real Time Clock option Circuit Description The module contains a communication controller with embedded Wireless M Bus protocol software and a high
10. e handled externally Master receives only messages from installed registered meters Automatic acknowledge in T2 No must be handled externally Yes according to NTA 8131 Typical application circuit 2 0 3 6 V Optional GND GND ASERRE peressssss 7 RTO VCCI ae 7 Antenna To host meter or Gas ye rs ee CTS RESET 7 V RS232 422 485 seas Cay aie aad ie CONFIG NC NC driver E TXD GND RXD RF GND GND RXD RC1180 MBUS UART t6 Meter TXD modem RC1180 MBUS RS485 UART modem Eroma 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 2 of 16 Radiocrafts Quick Product Introduction How do I transmit data Send your data to the RXD pin on the module Use the UART format with settings 19200 8 1 N no flow control Up to 128 bytes are buffered in the module The first byte of the message should contain the message length The module will transmit the data when the whole packet is received How do I receive data Any received data packet with correct M Bus format and check sums will be sent on the TXD pin Optionally the meter address first M Bus block is added to the data string The RSSI value received signal strength can optionally be added to the message What about the antenna In most cases a simple quarter wavelength wire or a PCB track will do Connect a piece of wire to the RF pin with length co
11. e end user respects the recommendations given by Radiocrafts A Declaration of Conformity is available from Radiocrafts on request 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 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 10 of 16 Radiocrafts 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 SMB Thou E 3 0 C Ss i o 4HMThou o Bgeue MM THoeuU k _ 1440 Thou gt 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 cover
12. ed 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 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 11 of 16 Radiocrafts Mechanical Drawing Radiocrafts Embedded Wireless Solutions RC10x0 Top view CE Shield can N Side view End view Bottom view Drawings are not to scale Mechanical Dimensions The module size is 12 7 x 25 4 x 3 3 mm I il lt 1 0 25 4 mm 0 5 12 7 mm Carrier Tape and Reel Specification Carrier tape and reel is in accordance with EIA Specification 481 44mm 16 mm 4mm 13 Max 1000 Soldering Profile Recommendation JEDEC standard IEC JEDEC J STD 020B page 11 and 12 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 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 12 of 16 Radiocraits Embedded Wireless Solutions RC1180 MBUS Absolute Maximum Ratings Supply voltage VCC 0 3 3 9 V A Voltage on any pin 0 3 3 9 V Input RF level 10 dBm Caution ESD sensitive device Storage temperature 50 150 oG Precaution should be used w
13. hen handling the device in order to prevent permanent Operating temperature 40 85 C damage 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 Electrical Specifications T 25 C VCC 3 0V if nothing else stated Operating frequency 868 0 870 0 MHz Number of channels 12 Input output impedance Ohm 50 Chip rate S mode 32 768 kchip s T mode 100 R2 mode 4 8 Data rate S mode 16 384 kbit s S and R2 mode use T mode 66 67 Manchester coding T mode R2 mode 2 4 uses 3 of 6 coding T2 use a combination of both Frequency stability S and T mode 40 ppm Including 10 years of aging R2 mode 20 TBD limited temperature range for R2 mode Frequency stability aging 1 ppm year_ _ Starting after 10 years Transmit power Typical values are for 20 9 10 dBm default settings FSK deviation kHz S mode 50 T mode 50 R2 mode 6 Adjacent channel power TBD dBc Occupied bandwidth TBD kHz 99 5 Spurious emission TX lt 1 GHz 36 dBm gt 1 GHz 30 Sensitivity S mode 100 102 dBm T mode 100 101 R2 mode 105 106 Adjacent channel rejection 29 dB 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 13 of 16 Radiocraits RC1180 MBUS Alternate channel selectivity 53 dB
14. ins mapes ulo 1 2 Power supply chapter added Frequency stability aging added 1 3 Pin Assignment for Pin 2 and Pin 3 swapped Pin 2 CTS Added chapter Programming interface Changed Test mode 2 description added Test mode 3 description 1 4 UART_BAUD _ RATE settings corrected Added R C network on Reset pin 1 5 Apply for firmware revision 1 15 and above 1 xx Added F set C field and G set M Bus mode commands Added T set Destination Address module ID command Minor corrections MBUS protocol info separated into a User Manual Product Status and Definitions Advance Information Planned or under This data sheet contains the design development specifications for product development Specifications may change in any manner without notice Preliminary Engineering This data sheet contains Samples and First preliminary data and Production 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 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 This data sheet contains specifications on a product that has been discontinued by Radiocrafts The data sheet is prin
15. 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
16. ram of a typical PC serial port interface is illustrated below EMI filter bead Suggested part numbers Component Manufacturer Part number EMI filter bead Murata BLM11A102S ordering code BLM18xx102xN1D Programming Interface For future firmware updates and to change to a different MBUs feature set it is recommended to include a 2x5 pins programming connector to the module programming pins The connector should be a 2 54 mm pitch pin row same pitch in both directions SMD or through hole version with the following connections GND 1 2 Tovcc RC11xx Pin20 3 4 RCiixx Pin 19 Pin 12 RESET 7 Reset connection To minimize effect of noise on the Reset line the Reset pin on the module pin 12 must be connected to external circuitry via an RC network Place directly on Reset pin as close as possible on pin Connect to programming connector pin Reset_N 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 9 of 16 Radiocrafts 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
17. rresponding to the quarter of a wavelength For space limited products contact Radiocrafts and we will recommend the best antenna solution for your application How do I change the M Bus mode RF channel or any other parameter To change configurable parameters send one byte to the module with the value 0x00 This will take the module into configuration mode Special commands are then used to access the configuration registers and test modes Exit from configuration mode by sending the X command Parameters can be changed permanently and stored in non volatile memory in the module Wireless M Bus Modem The standard RC1180 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 automatically adds the Command field the Manufacturer ID and the unique Address based on parameters configured in the module The UART data can easily be converted to USB or RS485 232 to interface external equipment 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 The protocol for UART application messages see MBUS User Manual for details is as follows From meter to module
18. ted for reference information only Obsolete Not in Production 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 15 of 16 Radiocraits Embedded Wireless Solutions RC1180 MBUS 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 to this product without notice Radiocrafts AS does not assume any responsibility for the use of the described product 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 specifications and functionality will be stated in product specific Errata Notes published at the Radiocrafts website Customers are encouraged to check regularly for the most recent 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 communication data buffering error check addressing and broadcasting 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 prod
19. uct 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 critical 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 safety or effectiveness Radiocrafts AS customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Radiocrafts AS for any damages resulting from any improper use or sale 2008 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 22712915 E mail radiocrafts radiocrafts com sales radiocrafts com support radiocrafts com 2008 Radiocrafts AS RC1180 MBUS Data Sheet rev 2 00 Page 16 of 16
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