JZ872 Low Power Wireless Module User`s Manual
Contents
1. http www jizhuo com 3 JZ872 Mini Power Wireless Module User s Manual Remarks To avoid to connect the interface reverse 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 reverse pls Change the connection wires between pin 2 and 3 2 Power supply JZ872 uses DC power supply with voltage of 5V It can also share power with other equipment however the high quality power 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 JZ872 have 2 on off input ports 2 on off output ports you can use as follows User terminal on off input JZ872 on off Output JZ872 output app circuit JZ872 on off Input User terminal on off output JZ872 Input app circuit 3 Saving power model JZ872 have three Power Saving models Awaken from Hardware Awaken from COM Port Awaken from Air The model can be set by RF Module software The user can choose Power Saving model the default model is Awaken from Hardware 1 Awaken from Hardware In this model the current is under 100uA Sleeping status when you inpu2. www jizhuo com 5 JZ872 Mini Power Wireless Module User s Manual Two JZ872 communicate must have condition as follow 1 Their channels i e frequency are the same 2 Their RF rates are the same 3 RF Module Com baud rate and verify is comply with its equipment or PC 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 1 430 2000MHZ 9 458 5250MHZ 2 431 4288MHZ 10 459 1250MHZ 3 431 7360MHZ 11 459 5250MHZ 4 430 5072MHZ 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 JZ872 Modulation mode GFSK Working frequency 433MHZ Transmission power 500mW Receiving sensitivity 123dBm Transmitting current lt 360mA Receiving current lt 45mA Sleeping current lt 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 C 85 C Working humidity 10 90 relative humidity without condensation Dimension 64mm 43mm 15mm Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo
3. Ultra low power transmission Transmission power 500mW high receiving sensitivity 123dbm Size 63mm 43mm 15mm 2 Low power consumption Receiving current lt 45mA transmission current lt 360mA sleeping current lt 1mA 3 Saving power model JZ872 have two saving power models awaken from Hardware awaken from COM Port 4 IO attemper function JZ872 have 2 on off input ports 2 on 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 868 915MHz 6 High anti 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 5 10 6 can be achieved when channel bit error rate is 10 2 7 Long transmission distance Within the range of visibility the reliable transmission distance is BER 10 3 1200bps gt 2500m when the antenna s height is greater than 3m 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 ve 2 on off input ports 2 on off output ports user can control remotely terminal without developing 9 Multi channel and speed The standard J
4. JZ872 Low Power Wireless Module User s Manual SHEN JIZHUO TECHNOLOGY CO LTD TEL 86 755 83304518 83308451 FAX 86 755 83302824 Address NO 813 212BLD Tairan Tech Park Futian District Shenzhen China Post Code 518040 Website http www jizhuo com page cn english asp type_id 1 EMAIL jassie jizhuo com or agatha198522 yahoo com cn MSN ID agatha198522 hotmail com JZ872 Mini Power Wireless Module User s Manual Before using the product please carefully read the user s manual Any question in technical you can contact us Tel 86 755 81353151 83563518 About JZ872 JZ872 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 JZ872 Feature 1
5. Z872 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 Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 1 JZ872 Mini Power Wireless Module User s Manual requirement 10 High speed wireless communication and Large data buffer When the speed rate in the 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 JZ872 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 it can change the traditional product structure and improve
6. com 6 JZ872 Mini Power Wireless Module User s Manual Attachable Communication with Model JZ871 JZ872 JZ873 JZ878 Model and name T TTL interface 2 RS232 interface 4 RS485 interface L p With shell Company Logo Optional Antenna O spillikin Flagelliform Small acetabula antenna Trouble and solve ways Item Trouble Trouble causes and solve ways a Power Line badness touch No shine of 1 b Power is bad Indicator light c Power line meet in reverse or diode of polarity protect is bad Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 7 JZ872 Mini Power Wireless Module User s Manual a Radio is badness touch with PC terminal No transmitting or 2 _ b Radio with TTL RS232 RS485 not match terminal receiving c RX frequency and TX frequency is not same a antenna not match or touch bad 3 High Bit error rate b RF baud rate is not right c Power supply ripple is too great j Indicator light a Electromagnetism disturb in circumstance twinkling b Same frequency disturb in the circumstance Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 8
7. t low level at NO 5 pin JZ872 can sleep but it can not transmit and receive data Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 4 JZ872 Mini Power Wireless Module User s Manual Normal work status when you input High level at NO 5 pin JZ873 turn into Normal work status 10ms later it can transmit and receive data Remarks if you keep the NO 5 pin untouched then JZ872 is in Normal work status 2 Awaken from COM Port When JZ872 in this model the current is under 11mA When you input data with COM port JZ872 turn into Normal work status after 10mS and can transmit the data When JZ872 not receive data in COM port in 20 seconds JZ872 will turn into sleep status When JZ872 not receive data from air in 20 seconds it will turn into sleep So when you choose Awaken from Air you can transmit some useless data firstly 4 IO Attemper Function JZ872 have two communication protocols Full transparence protocol and ID protocol Remarks full transparence protocol is default protocol if you need JZ872 with ID protocol please tell us when you order 1 Full transparence protocol In this mode whatever protocol you use JZ872 can send it to other side It can not change data format and data bits JZ872 can be used for Reading meter RTU and PLC with Address and so on 2 ID protocol When your terminal without Address or ID you can use JZ872 with ID protocol in this way you can differentia
8. te the data from you terminal The Main station you must use JZ872 with full transparence protocol the appurtenant station you must use JZ872 with ID protocol The JZ872 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 Remarks when you use JZ872 with ID protocol we provide communication protocol of JZ872 and programme manual 3 IO attemper function You can use one JZ872 with full transparence protocol for the Main station some JZ872 with ID protocol for the appurtenant stations each JZ872 of the appurtenant station must set one unrepeatable ID You can attemper the appurtenant station IO according to communication protocol of JZ872 Remarks when you use IO attemper function we provide communication protocol of JZ872 and programme manual JZ872 parameters setting JZ872 have one interface of TTL RS232 RS485 You should say clearly which interface you need when place an order JZ872 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 Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http
9. the product reliability Application of JZ872 1 Appearance figure Antenna socket TX RX indicator light Red TX Green RX User interface JZ872 figure 2 JZ872 interface definition Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 http www jizhuo com 2 JZ872 Mini Power Wireless Module User s Manual 1 User s interface JZ872 have one interface of TTL RS232 RS485 user can choose one JZ872 standard interface when the antenna upward the plastic socket gap upward from left to right 1 9 pin 12 3 4 5 6 T 8 9 Remarks Jack space between is 2 0 mm in turn as follows Definition of connecting pins and connection method Itemno PIN Description Level Connected User terminal Remarks to the terminal 1 SLE Sleep control input end Low level to sleep 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 50 5V 5 0 5V TTL 3V user s choose 6 I NO 2 on off input user terminal on off output 7 I NO on off input user terminal on off output 8 O2 NO 2 on off output user terminal on off input 9 O NO 1 on off output user terminal on off input transmitter receiver Shenzhen Jizhuo technology CO LTD China TEL 86 755 83304518 User s equipment 5v regulator n power supply
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