JZ873 Low Power Wireless Module User`s Manual
Contents
1. air is quicker than interface s allowing to transmit unlimited length data at one time when the speed rate is slower or equal the interface s allowing the transmission of 255 Bytes long data frames at one time for more flexible programming by users 11 Intelligent data control and the user doesn t need to prepare excessive programs Even for semi duplex communication the user doesn t need to prepare excessive programs only receiving transmitting the data from the interface JZ873 will automatically complete the other operations such as transmission receiving conversion in the air control etc 12 High reliability small and light Single chip radio frequency integrated circuit and single chip MCU are used for lessened peripheral circuits high reliability and low failure rate 13 Watchdog monitor Watchdog monitors the inner function so that change the traditional product structure and improve the product reliability 14 antenna choose Users can choose various antenna setting project and antenna according to user s different need to achieve a optimal effect JZ873 Mini Power Wireless Module User s Manual Application of JZ873 1 appearance figure Antenna socket TX RX indicator light Red TX Green RX User interface Jf873 figure 2 JZ873 interface definition 1 User s interface JZ873 have one interface of TTL RS232 RS485 user can choose one JZ873 standard interface when th2. is under 11mA When you input data to JZ873 with COM port JZ873 turn into Normal work status after 10mS and can transmit the data When JZ873 did not receive data in COM port in the period of 20 seconds JZ873 will turn into sleep status 3 awaken from Air When JZ873 sleeping in this saving power model the current is under 20mA When JZ873 in this saving power status JZ873 works intermittently When JZ873 received awake data from air JZ873 will turn into Normal work status after 10ms It can receive data normally When JZ873 did not receive data from air in the period of 20 seconds It will turn into sleep So when you wake up JZ873 5 JZ873 Mini Power Wireless Module User s Manual from air you can transmit some useless data firstly 4 10 Attemper Function JZ873 have two communication protocol full transparence protocol and ID protocol Remark full transparence protocol is default protocol if you need JZ873 with ID protocol please tell us when you book 1 full transparence protocol In this transmit mode whatever you use any protocol any data frame JZ873 can send it to the other side as like as two peas It can not change data format and data bits JZ873 with this transmit mode be used for Reading meter RTU and PLC with Address itself and so on 2 ID protocol when your terminal without Address or ID you can use JZ873 with ID protocol in this way you can differentiate the data from you terminal The Main station you must
3. quality power supply with desirable ripple factor should be selected In addition the reliable grounding must be used if there is other device in the system equipment In case of failure to connect with the earth it can form its own grounding but it must be absolutely separated from the municipal electric supply 3 Application of IO control JZ873 have 2 on off input ports 2 on off output ports you can use as follow JZ873 Mini Power Wireless Module User s Manual YOC User terminal on off 2 JZ873 output app circuit JZ873 on off Output JZ873 on off Input User terminal on off output JZ873 Input app circuit 3 Saving power model JZ873 have three Saving power models awaken from Hardware awaken from COM Port awaken from Air The model can be set by RF Module software You can chose one saving power model the default model is awaken from Hardware 1 awaken from Hardware When JZ873 sleeping in this saving power model the current is under 100uUA Sleeping status when you input low level at NO 5 pin JZ873 can sleep In this status JZ873 can not transmit and receive data Normal work status when you input High level at NO 5 pin JZ873 turn into Normal work status 10ms later JZ873 can transmit and receive data Remarks if you keep the NO 5 pin untouched then JZ873 in Normal work status 2 awaken from COM Port When JZ873 sleeping in this saving power model the current
4. JZ873 Low Power Wireless Module User s Manual JZ873 Mini Power Wireless Module User s Manual Before using the product please carefully read the user s manual About JZ873 JZ873 the Low power wireless module is used as the wireless data transmission in short distance With the small size weight and power consumption and good stability and reliability it has the function of bi directional data sign transmission test and control It is used for Wireless meter reading such as water meter electric meter and gas meter parking meter intellective card electronic weighing apparatus meter for checking on work attendance queue wireless meter building control shipping company control alarm system intelligent equipment Automatic data collecting system Industrial remote control and remote test building automation safety and security powerhouse equipment wireless monitor entrance control system etc It provide the USB power interface to be convenient for the mini computer and PC users if necessary JZ873 Feature 1 Ultra low power transmission transmission power 500mW high receiving sensitivity 119dbm size 58mm 38mm x 10 mm 2 Low power consumption Receiving current lt 45mA transmission current lt 360mA sleeping current lt 0 1mA 3 Saving power model JZ873 have three Saving power models awaken from Hardware awaken from COM Port awaken from Air 4 10 attemper function JZ873 have 2 on off input ports 2 o
5. d rate and verify is agree with its equipment or PC that it connects with JZ873 Mini Power Wireless Module User s Manual parameters default value Channel 1 Interface speed rate 9600BPS Interface verify none Speed rate in air 9600BPS Channel and frequency list Channel Frequency Channel Frequency 430 2000MHZ 9 458 5250MHZ 2 431 4288MHZ 10 459 1250MHZ 3 431 7360MHZ 11 459 5250MHZ 4 430 507 2MHZ 12 460 1250MHZ 5 434 6940MHZ 13 460 5250MHZ 6 434 2332MHZ 14 461 1250MHZ 7 433 1580MHZ 15 461 5250MHZ 8 433 9260MHZ 16 462 1250MHZ Technical specification of JZ873 Modulation mode GFSK Working frequency 433MHZ Transmission power lt 500mW Receiving sensitivity 123dBm Transmitting current lt 360mA Receiving current lt 45mA Sleeping current lt 0 1mA Channel speed rate 1200 2400 4800 9600 19200 38400Bit s User can Choose one Interface speed rate 1200 2400 4800 9600 19200 38400Bit s User can Choose one Change time for receiving and sending lt 10ms Interface data format 8E1 8N1 801 Power supply 5 0 5V DC Working temperature 20 2 65 Working humidity 10 90 relative humidity without condensation Dimension 58mmxX 38mm x 10 mm Attachable Communication with Model JZ871 JZ872 JZ873 JZ878 JZ873 Mini Power Wireless Module User s Manual Model and name xz Jle 3 T T TTL interface 2 232 interface 4 485 in
6. e antenna upward the plastic socket gap upward from left to right 1 9 pin in turn as below figure Remarks Jack space between is 2 0 mm Definition of connecting pins and connection method Item no PIN Description Level User terminal Remarks Connected to the terminal 1 SLE Sleep control input end Low level to sleep JZ873 Mini Power Wireless Module User s Manual High level awake 2 TXD A RS 485 Serial data transmitting end RXD A RS 485 3 RXD B RS 485 Serial data receiving end TXD B RS 485 4 GND Power supply Ground DGND AGND 5 VCC 5 0 5V 5 0 5V TTL 3V user s choose 6 l2 NO 2 on off input user terminal on off output 7 ly NO 1 on off input user terminal on off output 8 O2 NO 2 on off output user terminal on off input 9 O1 NO 1 on off output user terminal on off input User s equipment 5v regulator n power supply anf U N e transmitter receiver Remarks To avoid to connect the interface reversely and can not communicate please check and assure the voltage of 2 and 3 pin is existing by using multimeter If there is one pin that has the voltage another has not voltage which means the interface is connected reversely pls Change the connection wires between pin 2 and 3 2 Power supply JZ873 uses DC power supply with voltage of 5V It can also share power supply with other equipment however the high
7. n off output ports user can control remotely terminal without developing 5 ISM frequency band not requiring on application of frequency point Carrier frequency of 433MHz also capable of providing 315 868 915MHz carrier frequency 6 High ani interference and low BER Bit error Rate Based on the GFSK modulation mode it adopts the efficient communication protocol The actual bit error rate of 10 10 can be achieved when channel bit error rate is 10 7 Long transmission distance JZ873 Mini Power Wireless Module User s Manual Within the range of visibility the reliable transmission distance is BER 10 3 1200bps gt 3000m when the antenna height is greater than 2000m BER 10 3 9600bps 8 Transparent data transmission Transparent data interface is offered to suit any standard or nonstandard user protocol Any false data generated in the air can be filtrated automatically What has been received is exactly what has been transmitted The charge time for receiving and sending lt 10ms 9 Multi channel and speed The standard JZ873 configuration provides 16 channels to meet the multiple communication combination mode of the users It has baud rate to be chosen such as 1200bps 2400bps 4800bps 9600bps 19200bps 38400bps The wireless transmission rate is direct ratio with baud rate of interface to meet user s equipment requirement 10 High speed wireless communication and Large data buffer When the speed rate in the
8. terface Nakedboardno gt Company logo spillikin Flagelliform Small acetabula antenna Optional Antenna Trouble and solve ways NO Trouble Trouble causes and solve ways a Power Line badness touch No shine of 1 P is bad Indicator light p ee r c Power line meetin reverse or diode of polarity protect is bad a Radio is badness touch with PC terminal No transmit or ve 2 NE TaCANE b Radio with TTL RS232 RS485 not match terminal c RX frequency and TX frequency is not same a antenna not match or touch bad Bit error rate 3 High b RF baud rate is not right 9 Power supply ripple is too great O e r Indicator light a twinkling b Electromagnetism disturb in circumstance Same frequency disturb in the circumstance r
9. use JZ873 with full transparence protocol the appurtenant station you must use JZ873 with ID protocol The JZ873 of the appurtenant station must set ID according Jizhuo RF module soft you can resolve the data from user terminal transmit according to ID Protocol Remark when you use JZ873 with ID protocol we provide communication protocol of JZ873 and programme manual 3 IO attemper function You can use one JZ873 with full transparence protocol for the Main station some JZ873 with ID protocol for the appurtenant stations each JZ873 of the appurtenant station must set one unrepeatable ID You can attemper the appurtenant station IO according to communication protocol of JZ873 Remark when you use IO attemper function we provide communication protocol of JZ873 gt and programme manual JZ873 parameters setting JZ873 have one interface of TTL RS232 RS485 You must specify the interface when you buy JZ873 main parameters COM baud rate and verify RF baud rate Channel and frequency You can change these parameters by our RF Module soft When RF baud rate is faster than COM baud rate One frame Can transmit limitless data When RF baud rate is not faster than COM baud rate One frame Can transmit 255 bytes most You can set the rate according your need The general Power supply is 5V DC Two JZ873 communication must have condition as follow 1 Their channels i e frequency is same 2 Their RFratesis same 3 RF Module Com bau
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