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protocol, it accomplishes this by attaching a check character (BCC) or check characters 
(CRC) to the end of each command and reply. The device receiving the command or 
reply then verifies the BCC or CRC and returns an ACK—if the BCC or CRC is 
acceptable—or an NAK—if the 

BCC or CRC does not check. The DF1 protocol also will indicate failure with an error 
code. Internally, the link protocol must delimit messages, detect and signal errors, retry 
after errors, and control message flow. 

Modbus Operation 

The Modbus protocol requires the gaps between bytes of data in the same packet or 
message be within a specific limit.  

Devices receiving the message then know the starting and ending point of a message. 
These message frames are separated by a silent interval of at least 3.5 character times 
and the entire message must be transmitted as a continuous stream. In cases where 
the silent interval between bytes in a frame exceeds 1.5 characters, the frame is 
considered incomplete and is discarded by the receiving device. Even though this is a 
Modbus specification, not all Modbus devices strictly adhere to these timing 
requirements. 

When sending the Modbus packets wirelessly, messages can be split into two 
transmissions from the sending radio. If one transmission must be re-transmitted, the 
inter-character gap can be exceeded causing a Modbus error. To prevent this from 
happening, the HopNet radios use an additional packetization scheme encapsulating 
the Modbus packet. If Modbus mode is not selected, it is possible Modbus errors will be 
experienced. Modbus mode is selected on the Parameter tab.  

NOTE: When Modbus mode is selected it is no longer possible to change some of the 
other radio timing parameters. The affected parameters will appear grayed out on the 
Parameter tab. 

The HopNet radio’s default data transmit delay is 45msec from the start of the packet, 
then transmits and continues to stream the information to the remote. At slower baud 

Copyright © Murata Manufacturing Co., Ltd. All Rights Reserved.  2012 

HN-210D/X, HN-214D/X Rev. 2.0 01/13/17

 

38 of 64

 

www.murata.com

Содержание HN-210D

Страница 1: ...issue 2 01 16 2015 R Willett Reformatted to comply with new Murata V I HN 210D X HN 214D X RS 232 Serial Modbus Radio User Guide www murata com 3 01 13 2017 R Willett Updated Copyright Copyright Mura...

Страница 2: ...End users of these systems must also be informed that RF exposure limits may be exceeded if personnel come closer than 2 m to the apertures of any of these antennas Notice to users installers using th...

Страница 3: ...60950 Canadian Department of Communications Industry Canada IC Notice Canadian Department of Communications Industry Canada IC Notice This apparatus complies with Health Canada s Safety Code 6 IC RSS...

Страница 4: ...ved conduit for the hazardous location The cable must be in the conduit until out of the Hazardous Location and the conduit must be gas tight so no gases can flow through conduit 3 Do NOT remove the p...

Страница 5: ...ion 10 Aiming the Antenna and Placing the Remote 10 Interconnect Cable 10 Configuring the Network 11 HopNet Configuration Wizard 5 0 or later 11 About the INIT INI File 12 Parameters Tab 13 Network Ta...

Страница 6: ...rk 51 Guidelines for Selecting Your Site 51 Guidelines for Avoiding Terrain Obstructions 52 Customer Support 53 Introduction 53 Technical Assistance 53 Factory Repairs 53 Technical Specifications 54 E...

Страница 7: ...a of the HopNet D case greatly eases outdoor installation since no antenna feedline cable or adapters are needed The 6 dBi antenna gain increases the radiated EIRP to 24 dBm and the effective receiver...

Страница 8: ...a Integrity An on board 3 KB buffer and error correcting over the air protocol ensure data integrity even in the presence of weak signals or jammers The serial interface handles both data and control...

Страница 9: ...tes Full Duplex operation Store setup configuration in nonvolatile memory FLASH Fast acquisition less than 2 seconds is the typical time to acquire hopping pattern Smart power management features The...

Страница 10: ...nfiguring the Network section of this manual for details on these steps Install the HopNet Configuration Wizard on a PC The HopNet Configuration Wizard is located on the software and documentation CD...

Страница 11: ...is disconnected from the computer If the HopNet radio is disconnected from the computer it is necessary to click on the Restart button on the HN Wizard screen This will reload the settings from the ra...

Страница 12: ...r is the serial number of the radio inside the unit and is different from the serial number of the HopNet unit Both the HopNet unit serial number and the radio serial number are on the radio unit of t...

Страница 13: ...e message This is a test message from the Base radio to the remote HopNet radio This message will be displayed in the message window of the Wizard running on the remote PC The remote HopNet radio will...

Страница 14: ...llows communication with a PC using the straight through serial cable provided with the HopNet radio The switch must be in the CONFIG position to run the HN Wizard RUN Mode When the RUN CONFIG switch...

Страница 15: ...nd Chassis Ground 6 DSR Output Data Set Ready Response to DTR 7 RTS Input Request to Send Gates the flow of receive data from the radio to the user on or off In normal operation signal should be asser...

Страница 16: ...not place anything immediately in front of the antenna that could obstruct its radiation pattern Because the antenna in the HopNet Remote is inside the unit the antenna must have a clear line of sight...

Страница 17: ...e wait screen is displayed Once the radio has been found and the Baudrate determined the Finished screen is displayed Click on the Continue button to enter the Wizard NOTE The HopNet configuration Wiz...

Страница 18: ...s unpacked with the program is the INIT INI file It contains the entries below and an explanation has been included on how each parameter may be used ErrorLevel 0 Leave this value as is Only change it...

Страница 19: ...ettings stored when the Wizard was first opened but will not load them in the radio until the Apply Settings is clicked When the Apply Settings button is clicked all the changed values will be loaded...

Страница 20: ...o long Refer to the section Modbus Operation for details on this mode Network Number This parameter is also known as Set Hopping and is the same command as wn Refer to Configuration Commands section f...

Страница 21: ...is the same as wg and allows remote radios to Roam or only link to specific base stations Protocol Mode This parameter is the same as sp and enables the base station to operate in a multipoint networ...

Страница 22: ...o s HN Wizard main screen The base radio s Transmit Data window above right will display the message This is a test message from the Remote radio which will repeat until the Stop button is pressed on...

Страница 23: ...ion with the minimum data length parameter sets the amount of time from the receipt of a first byte of data from the host until the radio will transmit in transparent mode Default is 00H which causes...

Страница 24: ...than this number of bytes This parameter can be used to keep short intermittent transmissions contiguous In packet modes the length parameter in the data packet will override this value This value is...

Страница 25: ...ogrammed into the remotes which use it as a starting value when scanning for the base The speed at which the radio hops affects both latency and throughput The faster the radio hops the shorter the la...

Страница 26: ...nfiguration screen above On the next page are descriptions of the commands parameters that are available for modification Copyright Murata Manufacturing Co Ltd All Rights Reserved 2012 HN 210D X HN 21...

Страница 27: ...dio operates in For 2 4GHz radios selecting one of the 802 11b bands in which to operate the HopNet radio can be used in locations with 802 11b networks without causing interference with those network...

Страница 28: ...d with its base radio for the functions on this screen to work Range Optimization HopNet 2410 based radios only This command automatically applies an adjustment factor to the over the air timing of re...

Страница 29: ...r showing the progress of Range Optimization Once the process has completed the Range Optimization radio button will clear and the Done radio button will fill in indicating that adjustment factor has...

Страница 30: ...l percentage above 90 These functions operate with the Automatic Retransmit Request ARQ disabled and as such provide an indication of link quality but do not provide an indication of how often data wi...

Страница 31: ...hese two points will display yellow These points can be modified by editing the INIT INI file Under normal operation the received signal strength for each channel will fluctuate occasionally dropping...

Страница 32: ...ually NOTE In order to display the banner you will need to press the F1 key twice toggling the DTR which resets the radio and causes a new banner to display WinCOM de asserts and re asserts the DTR li...

Страница 33: ...data mode data that is sent to it from the PC is transmitted over the wireless connection When the WinCOM window is active keys typed on the keyboard will be sent to the radio and will be transmitted...

Страница 34: ...r details on all the configurable parameters When the radio is linked to another radio a communications test can be run by clicking on the Transmit button or pressing the F6 key Whatever ASCII string...

Страница 35: ...tatus line Useful when WinCOM is used to change the interface data rate WinCOM can communicate at new data rate without having to exit and re enter WinCOM PgDn Sets data rate of PC serial port to next...

Страница 36: ...mpted for a filename to load Loading the file will load the parameters into the Wizard program but will not program the settings into the HopNet radio until the Apply Settings button is clicked About...

Страница 37: ...it allows the sending of count input data and finally it allows the sending of files that contain configuration data The DNP3 protocol allows a client to issue control commands For example to close o...

Страница 38: ...rs the frame is considered incomplete and is discarded by the receiving device Even though this is a Modbus specification not all Modbus devices strictly adhere to these timing requirements When sendi...

Страница 39: ...data was successfully received improving data reliability and throughput If a remote Modbus device is added or removed from the wireless network the base radio will learn and remember that information...

Страница 40: ...on the Protocol tab or through the WinCom tab using the wp0 command When used in France this product must be set to operate in the France frequency band This can be set using the Wizard on the Protoco...

Страница 41: ...rtical slashes separate selections For example given the string wn 0 3f some legal commands are wn wn0 wn3 and wna Most commands which set a parameter also have a option which causes the modem to resp...

Страница 42: ...ure use 09 mode 01 during transmit transparent receive 0C mode 04 during transmit transparent receive 0D 10 reserved for future use 11 transparent transmit mode 01 during receive 12 transparent transm...

Страница 43: ...te in transparent mode even though the base station is operating in one of the nontransparent modes When using a protocol mode make sure to count in packet overhead when calculating network performanc...

Страница 44: ...ansmit Power 0 10mW EU setting 1 100mW default wr Read Receive Signal Strength remote only wu 0 1 Set Point to Point Direct Mode 0 Multipoint mode default 1 Point to point direct mode dx 0 FF remote o...

Страница 45: ...SI This command reports the relative signal strength averaged over the last 10 hops This command returns a one byte value that is proportional to received signal strength and can range from 00H to FFH...

Страница 46: ...nts various values of dx and the associated optimal and max ranges dx setting range min Optimal max 00H 0mi 0km 0 1mi 0 2km 0 8mi 1 3km 01H 0mi 0km 0 2mi 0 3km 0 9mi 1 5km 04H 0mi 0km 0 5mi 0 8km 1 2...

Страница 47: ...els 1 4 14 ph 00 fe base only Set Hop Duration 90H default 10ms pk 00 d0 Set Minimum Data Length 01 default pl Get Maximum Data Length D4H default 212 bytes pn 01 3e base only Set Maximum Number of Re...

Страница 48: ...needs to be set in the base which broadcasts the parameter to all remotes However link time can be reduced if this value is also programmed into the remotes which use it as a starting value when scan...

Страница 49: ...f data that needs to be sent together setting this parameter will provide time for the group of data to be sent by the host before the radio transmits If the length of data to be sent together is long...

Страница 50: ...mission Status Commands These commands deal with general interface aspects of the operation of the HopNet Command Description zb 0 1 Banner Display Disable 0 disabled 1 enabled default zc 0 1 2 Set Es...

Страница 51: ...nique factory set serial number which are also visible in the startup banner Set Duty Cycle Allows reduced power consumption by having a remote wake up only every 2N hops to receive and transmit Power...

Страница 52: ...f you wish the factory default settings to be remembered the next time you cycle power or reset the radio Recall Memory Useful for restoring the power on settings after experimenting with temporary ch...

Страница 53: ...7 bit data 2 stop bits 6 No parity 7 data bits 1 stop bit 7 Even Parity 7 data bits 1 stop bit 8 Odd Parity 7 data bits 1 stop bit qw 0 1 2 Adapter Wiring Mode 0 Normal full wire mode 1 Three wire mo...

Страница 54: ...mit pt 00 ff Set Data Transmit Delay remote only pv 0 1 Set Slot Assignment Mode base only pw 00 34 Set Base Slot Size base only px 0 1 Set ARQ Mode Status Commands zb 0 1 Banner Display Disable zc 0...

Страница 55: ...If the base station has problems the entire network will be compromised Transceiver Requirements For proper operation all transceivers in the network must meet these basic requirements Adequate and s...

Страница 56: ...power 3 If remote unit is in synchronization but performance is poor it may indicate antenna problems Check for properly aligned antenna headings 4 Verify proper system parameter values Interference i...

Страница 57: ...each other with very minor interface as long as they are assigned a unique network address Each network address has a different hop pattern If interference is suspected from a similar operating system...

Страница 58: ...look for the acknowledgement from the receiving radio This function will automatically detect the best setting for this parameter and save it in the radio The value is only required in the remote radi...

Страница 59: ...available for assistance Phone 678 684 2000 Fax 678 684 2001 Factory Repairs If return of equipment is necessary you will be issued a Return Material Authorization number RMA The RMA will help expedit...

Страница 60: ...than 3 5 miles up to 20 miles with HN 21xDX and appropriate antennas Frequency Band 2401 2475 MHz USA 2448 2478 MHz France 2448 2473 MHz Spain 2473 2495 MHz Japan 2452 2478 MHz Canada Approvals US FC...

Страница 61: ...luding cable 794 g Data Connector DB 9 Female Interconnect Cable Connector RJ 45 Environmental Specification Value Temperature Range 30 to 70 degrees C Humidity 95 at 40 degrees C Non condensing Copyr...

Страница 62: ...to express either loss or gain dBi Decibels referenced to an ideal isotropic radiator in free space Used to express antenna gain dBm Decibels referenced to 1 milliwatt An absolute unit used to measur...

Страница 63: ...communications system and facilitates the orderly transfer of information RMA Return Material Authorization RTU Remote Terminal Unit A device used in data collection TDMA Time Division Multi Access A...

Страница 64: ...t against Seller more than twelve 12 months after the related cause of action has occurred Buyer has not relied and shall not rely on any oral representation regarding the goods sold hereunder and any...

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