SM7 USER`S MANUAL - London Electronics Ltd.
Contents
1. Fig 6 Location of the configuration button 14 4 1 First Start of the SM7 Module At the first start the SM7 module requires settings of following indispensable information group address radio channel transmitter power type and radio baud rate Apart of this it is necessary to set parameters of the serial port baud rate and transmitter mode The SM7config exe program added to the set allows the user to configure in an easy way the SM7 module setting 4 1 1 Installation of the Configuration on PC The installation consists in copying of the SM7config exe program from the added CD disk to the set into the catalogue assigned by the user on the computer hard disk The program can be also started directly from the CD disk 4 1 2 Configuration Procedure of the SM7 Module In order to configure the SM7 module one must connect it to the computer serial port RS 232 outlet description according to the fig 3 next turn the module supply on press the module configuration button and hold it during ca 1 sec Then RxRF and TxRF diodes are lighting till the moment of the supply turning off After star ting the SM7Config exe program one can choose in the Port COM field the number of the COM port which the SM7 module is connected to After pressing the Connect button the configuration program establishes the connection with the SM7 module and the message Connected with the COM port2. RS 485 interface format danych predkos transmisji Radio circuit carrier frequency power receiver sensivity baud rate encoding type transmission range in direct line number of channels antenna output Time of availability obtainment since the supply connection Module input power Rated operating conditions supply voltage ambient temperature relative air humidity service position Storage and handling conditions ambient temperature relative air humidity Ensured protection grade from the housing side from the terminal side Overall dimensions Weight 8N1 8N2 8E1 801 7E1 7O1 2400 115200 bit s 8N1 8N2 8E1 801 7E1 7O1 4800 115200 bit s 433 868 MHz 20 15 10 5 0 5 10 dBm only 433 MHz 110 dBm 4800 9600 19200 38400 76800 bit s NRZ Manchester 300 10 500 SMA 25 lt 2 5 VA 7 35 V d c 20 24 50 V a c d c 85 230 253 V a c d c 0 23 45 C lt 95 condensation inadmissible any 20 70 C lt 95 condensation inadmissible IP 20 IP 20 45 x 120 x 100 mm 0 5 kg 17 Housing for 35 mm rail mounting acc EN 60715 Electromagnetic compatibility noise immunity acc EN 61000 6 2 resistance against supply decay acc EN 61000 6 2 noise emissions acc EN 61000 6 4 Safety requirements acc to EN 61010 1 installation category pollution grade 2 maximal phase to ea
3. frame After receiving the correct frame the grouped address encoded in the frame is checked If the address is identical as the module address which the frame have received then received data are directed to the serial port The current operating conditions of the module are signalled by lighting diodes Red RxD diode and yellow TxD diode signal the data flow through the serial port however the red RxRF and green TxRF signal the data flow through the radio channel If during the transmission both the red RxRF diode and the green TxRF diode are lighted that means that the reception buffer was overfilled by a to high number of data from the serial port more than 256 characters and their transmission through the radio line was cancelled RxRF and TxRF diodes are also lighted after introducing the module in the configuration state The transmission between the master device and the module can run faster than in the radio circuit because of the RS 485 port application to control the data flow the CTS signal which informs the master device if the module is ready to the data reception has not been applied In this connexion for the correct module operation it is recommended to apply the same baud rates of the serial port and the radio circuit The module is configured by the manufacturer to work on the serial port with a 9600 bit s baud rate in the 8N2 mode and on the radio circuit with the 9600 bit s baud rate 13 with the Manchester encodi
4. 10 3 3 Way of Connection with Devices The way of SM7 module connection to RS 232 or RS 485 interfaces are presented on fig 4 and 5 99 SM7 2 er p x Z FS RS 232 Bus m iL GND EM RxD TxD lt lt Supply TxD NS Fig 4 Connection way of SM7 module to the RS 232 bus 99 SM7 CND RS 485 Bus 2 3 4 Si 6 7 819110 Supply 1 1 GND im Fig 5 Connection way of SM7 module to the RS 485 bus 11 Caution Considering electromagnetic interference one must apply shielded wires to connect RS 485 interface signals The shield must be con nected to the earth terminal in a single point The supply should be connected to the earth terminal in a single point The supply should be connected by a two wire cable with an appropriate diameter of wires assuring its protection by means of an installation cut out 3 4 Requirements for Outlet Connections N Practically different interference sources occurring influence on the module in a continuous or impulse way from the supply network side in consequence of the other device operations The level of this interference should be reduced to a value lower than the module immunity threshold first of all through the appropriate module installa
5. RADIO TRANSMISSION MODULE SM7 USER S MANUAL RADIO TRANSMISSION MODULE SM7 USER S MANUAL CONTENTS 1 APPLICATION 5 2 OF THE SM7 MODULE Yio 6 SAINSTALLATION 6 3 1 M dule Mo ntirig nier etre tdeo it 3 2 SMT Electrical Corninections rrr rte 8 3 3 Way of Connection with 10 3 4 Requirements for Outlet 11 3 5 Examples of Heat Energy and 3000 Configurations to Co operate With SM7 Module nire rio Eee racer contend 11 4 MODULE PRINCIPLE OF 12 4 1 First Start of the SM7 Module and PC Computer 14 4 1 1 Installation of the Configuration Program on PC 14 4 1 2 Configuration Procedure of the SM7 Module ni 5 TECHNICAL ioter rina 6 5 7 ORDER CODES inre 22 7 MAINTENANCE AND WARRANTY eene 22 1 APPLICATION SM7 radio transmission module is device destined for data transmission by radio in the non licensed 433 MHz or 868 MHz band with output power from 20 to 10 dBm in one of ten accessible radio channels The data baud rate in the radio channel changes in the range 4800 76800 bit s however in the serial port it is possible to set up the baud rate i
6. SM7 MODULES PRINCIPLE OF OPERATION The SM7 radio transmission module enables the radio communication of devices equipped with an RS 232 or RS 485 serial port The maximal baud rate in radio channel is 76800 bit s This rate be changed in the range 4800 76800 bit s The communication with RS 232 or RS 485 interfaces can be carried out with baud rates from 4800 115200 bit s The radio transmission is performed maximally in the shape of 226 byte packages from which 256 bytes are data received from the serial port and remaining are applied for the need of package forming The data transmission is carried out in the following way data bits are received from the serial port and they are switched over to the sending buffer If the sending buffer will be filled up or if a suitable time is elapsed time out data are placed in a frame automatically provided with an appropriate heading and transmitted by the radio channel The heading is built from the sequence of six unique bytes allowing the receiving devices to identify streams of radio waves as frames with data Apart from the cited sequence of bytes the group address of the module transmitting data is encoded in the frame heading The insertion of this address in the frame increases the data safety and allows to cre ate several groups of modules working independently on the same radio channel The reception of radio data resolves itself into the detection of the correct data
7. appears in the communication window In case of access lack to the COM port the information about the lack of connec tion with the COM port will be displayed in the message window After the correct connection established with the SM7 module the configuration program displays the information about the current module configuration The change of the module configuration consists in making the choice in appropriate fields in the program window Following options are accessible Options of the serial port serial baud rate 4800 115 200 bit s serial transmission mode 8N1 8N2 8E1 801 7E1 701 Options of the radio port setting of the radio circuit group address radio channel number transmission type baud rate 4800 76800 bit s and encoding type NRZ or Manchester transmission power from 20 dBm to 10 dBm 15 NOTE One must remember that the optimal module work is reached at the setting of similar baud rate for both interfaces i e the serial port and the radio circuit For other settings the occurrence of erroneous data transmission states is possible The button Restore manufacturer settings allows to set up manufacturer settings in the module Each change of settings is registered in the message window of SM7Config exe program and transmitted to the SM7 module In case of correctly or erroneously carried out operation of the setting change an appropriate message will be displayed in the m
8. es in design and specifications of any products as engineering advances or necessity requires 19 7 07
9. essage window After carrying out changes one must disconnect the transmission choosing the Disconnect button The disconnection of the transmission and the release of the COM port by SM7Config exe will follow Set parameters of the module configuration will be operative after turning the module supply off for ca 3 sec and it renewed turning on SM7 Module configuration version 1 1 11 20 38 Port 2 connected X 11 20 38 Trying to connect with SM module C m Di Connecting with module easa 11 20 39 Connection with SM7 estabilished order SM7 x 1 x Firmware 1 2 FSerial port options 11 20 50 Manufacturer setting restored Saran order 5 7 1 Firmware 1 2 C 8 C 48 kbi s 8N2 96 kbit s 861 C 192 kbit s C 801 C 384 kbit s C 575 kbit s C 70 1152 kbit s B Radio circuit options power 1 Transmission type Radio circuit settings 20 dBm 48 kbit s NAZ i number 71 4 dts Manchester edo 5 m C 88 kbit s NAZ Group ades hos C 40 dBm 96 kbit s Manchester 2 19 2 kbit s NRZ 182 kbit s Manchester SENE c it s Manchester 5 dim 768 kbit s NAZ 10 dBm C 76 8 kbit s Manchester Fig 7 View of the SM7Conf exe configuration application 16 5 TECHNICAL Port 1 RS 232 interface data format baud rate Port 2
10. n the range 4800 115200 bits s These changes are carried out by means of the annexed SM7Config exe configu ration program The offered module is become completed with a stub antenna equipped with a connector of SMA type SMA SMA angle adapter and a concentric cable destined to locate the antenna in any place The SM7 radio transmission module finds application among other things in power engineering automatics for monitoring data of the manufacturing process and in many other applications requiring data transmission The SM7 module enables the data readout from devices equipped with serial in terfaces RS 485 or RS 232 The data exchange with the master device is carried out in the radio circuit with 433 MHz or 868 MHz frequency The SM7 module enables the work in one of ten radio channels in two different types of data encoding Manchester or NRZ The addressing radio circuit has been applied in the module what gives the possibility of grouping modules working on the same radio channel Exemplary applications of the SM7 module are presented on the fig 1 SM1 Pressure module transducer R 232 D RS 485 PC operator station P18 temperature puss and humidity transducer Fig 1 Exemplary monitoring of temperature humidity and pressure 2 SET of the SM7 MODULE The set of the data acquisition module is composed of SM7 module stub antenna SMA SMA angle adapter antenna cable plug with screw terminals
11. nected acc to the fig 3 and the table 1 in which the assignment of particular outlets of the SM7 module has been described 85 253 V 20 50 V Tar SBN E jea 7 11 12 13 14 15 16 17 18 11 12 13 14 15 16 17 18 020000029099 000020009099 O RD O TD O RxRF RxRF TxRF O TRF for 85 253 V 4 and 20 50 V a c d c supplies b for 7 35 V d c supply Fig 3 Description of SM7 outlets Description of SM7 outlets Table 1 Terminal No Terminal description TxD RS 232 line RxD RS 232 line GND RS 232 line not used not used not used 5 V 25 mA line GND RS 485 line ARS 485 line B RS 485 line Supply line for d c current supply Supply line for d c current supply Functional ground line d c supplied not used not used not used not used not used Description of SM7 module diodes Table 2 RxD Data receipt from the serial port red TxD Data transmission to the serial port yellow RxRF red Receipt of radio data TxRF ission of radio data green Transmission of radio dat
12. ng and the transmitter power equal 10 dBm however all parameters can be changed depending on requirements The configuration is carried out by means of the SM7config exe configuration pro gram The configuration program takes advantage of the RS 232 serial port and exchanges data with the SM7 module using its own communication protocol One must remember that the module configuration program works with following serial port settings baud rate 9600 bit s transmission mode 8N2 To switch the SM7 module into the configuration mode one must press for three seconds during the module operation the button being at the bottom of the housing The button location is presented on the fig 6 After pressing the button the SM7 module breaks the normal operation switches over to the configuration mode and adapts the setting of its serial port to settings of the configuration program i e 9600 8N2 After the configuration change one must turn the module supply off and next switch it on again The module will start to the normal work with new settings ax S 2 w 5 5 VW F 2 5 3 gt S d B 5 gt 5 a T 8 i ts 55 ood a a 2 8 B d o 9 IM EL T 2 0006002 Em Button
13. ns fuses PE connection Additional information can be obtained from the user s manual The documentation contains information about installation in compliance with EMC shielding grounding filters and cables These notes must be observed for all CE marked products The manufacturer of the measuring system or installed devices is responsible for the compliance with the required limit values demanded by the EMC legislation 5 Measuring systems including SM7 modules must be equipped with protection devices according to the corresponding standard and regulations for prevention of accidents e After the instrument has been disconnected from the supply voltage live components and power connections must not be touched immediately because capacitors can be charged The housing must be closed during operation 6 Maintenance and servicing Please observe the manufacturer s documentation Read all product specific safety and application notes in this user s manual e Before taking the meter housing out one must turn the supply off The removal of the instrument housing during the warranty contract period may cause its cancellation 3 1 Module mounting The module is fixed on a 35 mm rail acc to the fig 2 120 Fig 2 Overall dimensions and module fixing way 3 2 SM7 Electrical Connections The supply and external signals must be con
14. of BU1005 type plug with screw terminals of BUO204 type SM7 user s manual warranty card IDEE D SOM WAN NE When unpacking the instrument please check whether the type and execution code on the data plate correspond to the order 3 INSTALLATION and SAFETY REQUIREMENTS Symbols located in this service manual mean WARNING Warning of potential hazardous situations Especially important One must acquaint with this before connecting the instrument The non observance of notices marked by these symbols can occasion severe injuries of the personnel and the damage of the instrument CAUTION Designates a general useful note If you observe it handling of the meter is made easier One must take note of this when the instrument is working inconsistently to the expectations Possible consequences if disregarded In the security scope the instrument meets the requirements of the EN 61010 1 standard Remarks concerning the operator safety 1 General The instrument is destined to be mounted on a 35 mm rail acc to the fig 2 Non authorized removal of the required housing inappropriate use incorrect installation or operation create the risk of injury to personnel or damage to equipment For more detailed information please study the present user s manual All operations concerning transport installation and commissioning as well as maintenance must be carried out by qualified skilled personnel and national
15. regulations for the prevention of accidents must be observed According to this basic safety information qualified skilled personnel are persons who are familiar with the installation assembly commissioning and operation of the product and who have qualifications necessary for their occupation 2 Transport storage Please observe the notes on transport storage and appropriate handling Observe the climatic conditions given in Technical Data 3 Installation The meter must be installed according to the regulation and instructions given in this user s manual Ensure proper handling and avoid mechanical stress Do not bend any components and do not change any insulation distances Do not touch any electronic components and contacts Instruments may contain electrostatically sensitive components which can easily be damaged by inappropriate handling Do not damage or destroy any electrical components since this might endanger your health Electrical connection Before switching the instrument on one must check the correctness of connection to the network In case of the protection terminal connection with a separate lead one must remember to connect it before the connection of the instrument to the mains When working on live instruments the applicable national regulations for the prevention of accidents must be observed The electrical installation must be carried out according to the appropriate regulations cable cross sectio
16. rth work voltage forsupply circuit 50 V for other circuits 50 V SM7 ORDER CODES Radio transmission module SM7 Supply voltage 85 230 253 V a c d c 20 24 50 V a c d c 1 35 V d C p Radio carrier frequency 433 MHz 868 MHz Acceptance tests wthout additional tests with an extra quality inspection certificate acc to user s agreement The manufacturer will establish the code number Coding example The SM7 1 2 7 code number means SM7 Radio transmission module 1 supply voltage 85 230 253 V a c d c 2 radio carrier frequency 868 MHz 7 with an extra quality inspection certificate 18 7 WARRANTY 5 7 modul does periodical maintenance In case of some incorrect operations 1 After the dispatch date and within the period stated in the warranty card One should return the instrument to the Quality Inspection Dept If the instrument has been used in compliance with the user s manual the ma nufacturer warrants to repair it free of charge The disassembling of the housing causes the cancellation of the granted warranty 2 After the warranty period One should send the instrument to repair it in a authorized service workshop Spa re parts are available for the period of five years from the date of purchase The manufacturer reserves the right to make chang
17. tion in the object In order to obtain a full immunity of the module against electromag netic interference in an environment with an unknown interference level it is recommended to observe following principles Do not apply the module from the network in the proximity of devices generating high impulse interference Apply network filters for the group of modules servicing the same object Apply the general principles that wires group of wires leading different signals should be led farther away to one another not less than 50 cm and crossings of such group of wires made at an 90 C angle 3 5 Example of Heat Energy and 3000 Configuration to co operate with the SM7 Module Heat and Lumel 3000 systems communicate with industrial devices by means of COM serial ports The SM7 module does not require the installation of whatever programmable logic controller In case when there is not enough of serial ports in the computer one can increase this number installing a PD10 or PD12 USB converter on the bus what extends computer resources with additional COM ports After installing additional COM serial ports one can refer to them in offered systems Then one must introduce or change supervisory calls to the added communication ports in new or existing applications or system configurations Energy softwares in older version then 2 5 service maximally 4 serial ports and they must be installed as COM 1 4 in such systems 12 4
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