905U-D Radio Modem Module User Manual Thank you for your selection of the 905U-D radio modem. We trust it will give you many years of valuable service. ATTENTION! Incorrect termination of supply wires may cause internal damage and will void warranty. To ensure your 905U-D enjoys a long life, double check ALL your connections with the user’s manual before turning the power on.
Contents FCC Notice: This user’s manual is for the ELPRO 905U-D radio modem. This device complies with Part 15.247 of the FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference and 2) This device must accept any interference received, including interference that may cause undesired operation. This device must be operated as supplied by ELPRO Technologies Pty Ltd.
905U-D Radio Modem Module User Manual How to Use This Manual To receive the maximum benefit from your 905U-D product, please read the Introduction, Installation and Operation chapters of this manual thoroughly before putting the 905U-D to work. Chapter Four Configuration details the configurations available and explains the diverse operation of the product in detail. Chapter Five Specifications details the features of the product and lists the standards to which the product is approved.
Contents WARNING 1. In some countries, a radio licence is not required for the 905U-D telemetry modules provided the module is installed using the aerial and equipment configuration described in the 905U-D Installation Guide. In other countries, refer to the relevant Regulatory Authority. Check the Installation Guide for your country listing. 2. Where a radio licence is not required, operation is authorised by the relevant Authority in your country on a non-protection basis.
905U-D Radio Modem Module User Manual CONTENTS CHAPTER ONE INTRODUCTION.......................................................................................... 8 1.1 GENERAL ......................................................................................................................... 8 1.2 TRANSPARENT MODE ....................................................................................................... 9 1.3 CONTROLLED MODE ..........................................................
Contents CHAPTER FIVE SPECIFICATIONS ...................................................................................... 38 CHAPTER SIX TROUBLESHOOTING................................................................................. 40 6.1 DIAGNOSTICS CHART ..................................................................................................... 40 6.2 TEST FUNCTIONS ........................................................................................................... 40 6.2.1 6.2.
905U-D Radio Modem Module Chapter One User Manual INTRODUCTION 1.1 General The 905U-D radio modem module has been designed to provide flexible and reliable radio modem functions, at an economical price. Radio modems transmit serial data over a long distance via radio. The serial data is not changed - the output data is the same as the input data. Although the 905U-D is intended to be simple in its application, it also provides many sophisticated features.
Chapter One Introduction transmitted in one transmission. The radio transmission commences when the first data byte is received, and ends when there are no more data bytes in the input buffer, or when the number of bytes transmitted equals the maximum message length (user configurable - default 520 bytes). If more than 520 bytes is input, the 905U-D unit will transmit the first 520 bytes, then the next 520 bytes, and so on until all of the data has been transmitted.
05U-D Radio Modem Module 1.3 User Manual Controlled Mode In “controlled” mode, the flow of data is controlled by the 905U-D units. Each 905U-D unit is configured with an address by the user, and a destination address for the data to be transmitted to. Data is transmitted addressed to the destination module, and only this module will output the serial data. The source module will add an error-check (16 bit CRC) to the data transmitted by radio.
Chapter One 1.4 Introduction Repeater Units A 905U-D unit may be used as a repeater to retransmit radio messages. The purpose of a repeater unit is to extend radio range. In transparent mode, only one module per system may be used as a repeater. If more than one module is configured as a repeater, any message transmitted in the system will be continually re-transmitted between the repeater units. The repeater in transparent mode will repeat every transmission it receives.
905U-D Radio Modem Module User Manual Chapter Two INSTALLATION 2.1 General The 905U-D module is housed in an rugged aluminium case, suitable for DIN-rail mounting. Terminals will accept wires up to 2.5 sqmm in size. Normal 110-240V mains supply should not be connected to any terminal of the 905U-D module. Refer to Section 2.3 Power Supply. Before installing a new system, it is preferable to bench test the complete system.
Chapter Two 2.2 Installation Power Supply The 905U-D module may be powered by either a 12VDC or a 24VDC supply. The negative side of the supply is connected to "COM" and may be connected to “ground”. The supply negative is connected to the “GND” terminal internally. The positive side of the supply must not be connected to earth. The DC supply may be a floating supply or negatively grounded. The 12V supply is suitable for an unregulated DC supply.
905U-D Radio Modem Module User Manual DB9 Connector Pinout Pin Name Direction 1 DCD Out Function Data carrier detect - not connected Rev. 1.03 software & earlier Rev. 1.04 & later - driven when link is established in controlled mode - driven always in transparent mode 2 RD Out Transmit Data - Serial Data Output 3 TD In Receive Data - Serial Data Input 4 DTR In Data Terminal Ready - not connected Rev 1.03 & earlier, Rev. 1.
Chapter Two Installation As the RS485 communication medium is shared, only one of the units in the system may send data at any one time. Thus communication protocols based on the RS-485 standard require some type of arbitration. The 905U-D “holds off” for three character times after receiving data from the RS-485 port before transmitting on the RS-485 port.
905U-D Radio Modem Module User Manual Chapter Three 3.1 OPERATION Power-up and Normal Operation When power is initially connected to the 905U-D module, the module will perform internal diagnostics to check its functions. The following table details the status of the indicating LEDs on the front panel under normal operating conditions.
Chapter Three Operation 3.2 Serial and Radio Data Data input at the serial port is placed into the input buffer. This buffer will store 8Kbytes of data, and CTS control is provided on the RS232 port to prevent overflow. When the 905U-D unit detects data in the input buffer, it initiates a radio message. The radio message will end when the number of transmitted bytes reaches the maximum message length (configurable by the user).
905U-D Radio Modem Module 3.2.3 User Manual Radio Data Rate The data is transmitted by radio as direct modulated synchronous data at a rate between 19200 and 115200 bits per second. The user must configure the radio data rate at each 905U-D module. The configured radio data rates must be the same for each module in a system.
Chapter Three Operation 3.3 Transparent Mode In transparent mode, radio messages are transmitted without unit addressing. Units do not provide handshaking functions to control the flow of data. Every unit which receives the radio message, and has the correct system address, will output the data. Transparent mode operation is effectively a broadcast system. Data received at the serial port is transmitted out of the radio port. Data received from the radio is transmitted out of the serial port.
905U-D Radio Modem Module User Manual unit does not receive the acknowledgment, the DCD output will reset. When the connection is made (DCD set), the 905U-D units can transmit data to each other. The destination address may be configured two ways. The AT&Z command (see Section 4, Configuration) enters an “auto-dial” address. The ATD command enters a “single-dial” address. The AT&Z command only has to entered once, and the 905U-D remembers the destination address.
Chapter Three Operation Establishing a Communications Link Master Unit Slave Unit • Listen to ensure channel is clear • If clear, message transmit “connect” -------------------> • Receives message • Radio RX LED flashes • Radio TX LED flashes • Check system and destination address • If OK, set DCD LED and output • If message OK, transmit back an ACK message.
905U-D Radio Modem Module User Manual Unsuccessful Communications Source Module Destination Module • Listen to ensure channel is clear -------------------> • If clear, transmit message • Receives message • RX LED flashes • TX LED flashes • Check system and destination address • If incorrect, transmit no message and no serial output. • If addresses are check error-check.
Chapter Three Operation If error-checking is selected, then the destination module will only return a ACK if the error check is valid. If the error check is not valid, then a NACK message is returned. If the errorchecking function is not selected, then the destination module will return an ACK every time it receives a message (a NACK is never sent). Each repeater will re-transmit the ACK or NACK message until it is received by the source module.
905U-D Radio Modem Module User Manual It is possible to configure different units in the same system with different operating modes, however the system will not operate. A 905U-D unit configured in one mode will not process a message received from a unit in the alternate mode. Error Check ? Error-checking may be configured in both transparent and controlled mode. When the errorcheck is configured, two additional bytes are attached to the end of each message.
Chapter Three Operation the normal radio level by mounting the aerials higher or in a better location. This not always possible. System performance may be improved by changing the following parameters :• If in transparent mode, try controlled mode. • If configured for a radio data rate of 115200 bits/sec, reduce the rate to 57600 bits/sec or 19200 bits/sec. • If large radio messages are being transmitted, reduce the maximum message length, and transmit the data in more messages of smaller size.
905U-D Radio Modem Module Chapter Four 4.1 User Manual CONFIGURATION Before Configuring Configuration comprises selecting parameter values for the operation of the 905U-D unit. Before you start configuration, parameter settings must be decided. The main parameters are :• Character type. You need to find out the character type of the host devices connected to the 905U-D units. The most common character type is 8 data bits, no parity, 1 start bit and 1 stop bit. • Serial Data Rate.
Chapter Four Configuration Before a 905U-D unit will accept Hayes commands, it must be in configuration mode. A host device may force the unit to configuration mode by sending three “escape” characters “+++”. The default escape character is “+”, however this may be changed as it is one of the configuration parameters Note that in the Host-connect operating modes, the 905U-D units start up in configuration mode.
905U-D Radio Modem Module User Manual Operating mode (S0) xxx ATS0 = xxx Option Default = 4 Connect Mode 0 Transparent mode without error-check Host 1 Transparent mode with error-check Host 2 Controlled mode without error-check Host 3 Controlled mode with error-check Host 4 Transparent mode without error-check Auto 5 Transparent mode with error-check Auto 6 Controlled mode without error-check Auto 7 Controlled mode with error-check Auto 8 Transparent mode repeater Auto NOTE
Chapter Four Configuration Bits/sec xxx Bits/sec xxx 1200 0 57600 6 2400 1 115200 7 4800 2 9600 3 19200 4 38400 5 Radio data rate (S5) ATS5 = xxx Default = 1 To select or change the radio data rate, enter the following VALUE code. The radio data rate should be the same at each 905U-D module in the same system. The default value is 4800 bits/sec.
905U-D Radio Modem Module User Manual NOTE : These values are valid for software version 1.11 and later. For earlier versions, refer to your distributor. To find out the software version, use the ATI command.
Chapter Four ECHO Configuration VERBOSE QUIET VALUE VALUE “RINGING” response no “RINGING” response Disabled Disabled Enabled 4 12 Enabled Disabled Enabled 5 13 Disabled Enabled Enabled 6 14 Enabled Enabled Enabled 7 15 NOTE: This register is accessible by the “Echo” command (ATE0, or ATE1), “Quiet” command (ATQ0, or ATQ1), and “Verbose” command (ATVO, or ATV1) Refer to section 4.3.6 for an explanation of the “Ringing” response feature.
905U-D Radio Modem Module User Manual The module will automatically attempt to connect to the destination address. For example, to set the destination address to 18 with repeater addresses 2 and 8, the command would be AT&Z2,8,18 If the destination address was to be 105 with no repeaters, the command would be AT&Z105 or AT&Z105&W (this command also stores the change in permanent memory).
Chapter Four Configuration 4.3.10 Character Type - AT&Bx This command allows configuration of the character format and flow control used on the serial port. The x value is the same as the character type command under S-register 9. Note: The value of this setting is also available via S-register S9 4.3.11 Character Type - AT&Mx This command allows configuration of the operating mode. The x value is the same as the character type command under S-register 0.
905U-D Radio Modem Module User Manual 4.4 Configuration Examples Transparent Mode Extending a PLC Network PLC PLC PLC RS485 9.6KB RS485 38.4KB 405U 9.6KB 405U 9.6KB 405U REPEATER DATA = 7 DATA BITS, 1 START, 2 STOP, EVEN PARITY Unit No.
Chapter Four Configuration Exit and save the configuration AT&W ATO Note that it was not necessary to set the serial data rate as 9600 is the default setting. Controlled Mode Point-to-point link with repeaters Assume that default settings are used for data rates and character types. configuration required is addressing.
905U-D Radio Modem Module User Manual Module #100 Note that #100 is the master unit for a link between #100 and #101, It is also acting as repeater in the #1 to #3 link. The system address for #100 and #101 must be the same as the other modules so that #100 can act as a repeater.
Chapter Five Specifications Chapter Five SPECIFICATIONS General Radio specification FCC part 15.247 902-928 MHz 1W Housing 130 x 185 x 60mm DIN rail mount Terminal blocks Removable LED indication OK operation, Serial RX and TX, Radio RX and TX, DCD active Operating Temperature -20 to 60 degrees C Powder-coated, extruded aluminium Suitable for 2.5sqmm conductors Power Supply Nominal supply 12VDC or 24VDC 12V supply 11.
905U-D Radio Modem Module Byte format User Manual 7 or 8 data bits Stop/start/parity bits configurable Transparent mode Broadcast system System Parameters Operating modes Controlled mode System address User Configuration Addressed communications with acknowledged Configurable 15 bit Hayes commands from host device.
Chapter Six Troubleshooting Chapter Six TROUBLESHOOTING 6.
905U-D Radio Modem Module User Manual Test Command Function AT&T0 Factory test only AT&T1 Factory test only AT&T2 Factory test only AT&T3 Factory test only AT&T4 Factory test only AT&T5 Internal RAM test AT&T6 Nonvolatile Memory (EEPROM) test AT&T7 Configuration Switch test AT&T8 Received Signal Strength Display AT&T9 Transmit Tone reversals AT&TA BER Test - Master AT&TB BER Test - Slave AT&TC BER Test – Two direction The tests most useful for diagnosing system problems are “re
Chapter Six Troubleshooting When using this feature, the current value of the received signal strength is displayed in dBm (decibels referenced to 1 mW). This value is updated every half second. To check the radio path between two units, select the signal option at the local unit. The remote unit may then be set up for tone reversals (refer 1 above) and the signal level read from the computer screen.
905U-D Radio Modem Module 6.2.3 User Manual Bit Error Rate Test (BER) BER may be tested in one direction by typing AT&TA (BER master) at the sending unit and typing AT&TB (BER slave) at the receiving unit. The sending unit will repeatedly send pseudo-random frames, and the receiving unit will check these frames for errors. If a terminal is connected to the sending unit, the pseudo-random data is displayed as it is transmitted.
Chapter Seven Warranty and Service Chapter Seven WARRANTY & SERVICE We are pleased that you have purchased this product. Your purchase is guaranteed against defects for a 365 day warranty period, commencing from the date of purchase. This warranty does not extend to: - Failures caused by the operation of the equipment outside the particular product's specification.
905U-D Radio Modem Module Appendix A User Manual Switch Configuration 1.0 Introduction In order to configure the 405U unit, or to change the configuration, the unit must be placed into Configuration Mode. When in this mode, the unit will not operate as transparent or controlled mode. Module configuration may be performed using the on-board miniature (DIP) switches or from the host device using Hayes AT command codes (refer to Section 4.3).
Appendix A Switch Configuration Once the module is in configuration mode, transparent or controlled mode may be selected. This is achieved by entering in another switch pattern. If transparent mode is selected, no further configuration is required, and the module will automatically exit configuration mode. If controlled mode is selected, further entries are required for the addressing of the communications link. 1.0.
905U-D Radio Modem Module User Manual Note that repeater and destination addresses are only entered for the “master” unit in each link. For “slave” units, only the unit address is entered. For modules which will just act as a repeater unit, just a unit address need be entered. For these modules, enter the exit pattern of all zero’s after the unit address. To select controlled mode the following switch pattern is entered after the system address has been entered.
Appendix A Switch Configuration 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 • Unit address is 0000001 (#1) • First repeater address is 0000010 (#2) • Second repeater address is 1100100 (#100) • Destination address is 0000011 (#3) • Configuration complete Module # 2 Configuration Module #2 is the first repeater.
905U-D Radio Modem Module 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 User Manual • Configuration complete Module #100 Configuration Module #100 is the second repeater in the link between #1 and #3. It also has a host device and transmits data to #101. It is configured as the “master” unit for the #100 - #101 link. As it has the unit address #100, it will also act as a repeater for #1 - #3. Note that the system address for #100 and #101 has to be the same as #1 and #3.
Appendix A Switch Configuration Module #3 Configuration As module #3 is the “slave” unit for this link, configuration. 0 1 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1.1 only the unit address is required for the • System address 100100100010010.
905U-D Radio Modem Module 1.1.
Appendix A Switch Configuration Hence for a desired message of 10 bytes, a VALUE code of zero (00000000 ) is entered. For the maximum length of 520 bytes, a MESSL code of 255 (11111111) is entered. The default message length is 520 bytes. 1.1.4 Serial Data Rate PARAM = 0 1 0 0 Default = 0 0 0 0 1 0 0 0 To select or change the serial data rate, enter the following VALUE code. The serial data rate can be different at different 405U modules in the same system. The default value is 9600 bits/sec.
405U Radio Modem Module 1.1.7 User Manual Receive Hold-off Time PARAM = 1 1 0 1 Default = 0 0 0 1 0 1 0 0 A delay time may be configured such that the 405U unit will not transmit a message during the hold-off time after receiving a message. The maximum hold-off time is 255 msec. The receive hold-off time value is the 8-bit binary equivalent of the desired time in 1 msec increments. Hence for a desired hold-off time of 10 msec, a VALUE code of ten (00001010 ) is entered.
Appendix A 1.1.9 Switch Configuration Data Bits 7 Start Bits 1 Stop Bits 1 Parity even CTS/ RTS control disabled 7 1 8 VALUE 0000 1100 1 odd disabled 0000 1101 1 2 none disabled 0000 1110 7 1 2 even disabled 0000 1111 7 1 2 odd disabled 0001 0100 Connect Update Time PARAM = 1 1 1 0 Default = 0 1 1 0 0 1 0 0 In controlled mode, the 405U unit will transmit a “connect” message if there has been no activity on the radio channel for the update time.
405U Radio Modem Module User Manual Unit No. 1 Configuration 0 0 0 0 1 0 1 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 1 0 0 0 1 0 1 0 0 1 1 0 1 0 0 1 1 1 1 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 Set the System Address • Press the red button for approx. 3 seconds - until the Serial RX LED indicates RED.
Appendix A Switch Configuration 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 • Configuration mde will automatically exit as Transparent Mode • Set Operating Mode to Transparent Repeater and press button until RX LED lights. Unit No. 2 Configuration 0 0 0 1 0 1 0 1 0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 1 1 0 1 0 0 1 1 1 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 Man_905UD_2.0.
405U Radio Modem Module Appendix B User Manual DECIMAL TO BINARY TABLE VALUE 8 BIT PATTERN VALUE 8 BIT PATTERN VALUE 8 BIT PATTERN 0 0000 0000 38 0010 0110 76 0100 1100 1 0000 0001 39 0010 0111 77 0100 1101 2 0000 0010 40 0010 1000 78 0100 1110 3 0000 0011 41 0010 1001 79 0100 1111 4 0000 0100 42 0010 1010 80 0101 0000 5 0000 0101 43 0010 1011 81 0101 0001 6 0000 0110 44 0010 1100 82 0101 0010 7 0000 0111 45 0010 1101 83 0101 0011 8 0000 1000 46 0010 1110 84 0101 0100 9 0000 1001 47 0010 1111 85 0101 01
Appendix B Decimal to Binary Table VALUE 8 BIT PATTERN VALUE 8 BIT PATTERN VALUE 8 BIT PATTERN 114 0111 0010 151 1001 0111 188 1011 1100 115 0111 0011 152 1001 1000 189 1011 1101 116 0111 0100 153 1001 1001 190 1011 1110 117 0111 0101 154 1001 1010 191 1011 1111 118 0111 0110 155 1001 1011 192 1100 0000 119 0111 0111 156 1001 1100 193 1100 0001 120 0111 1000 157 1001 1101 194 1100 0010 121 0111 1001 158 1001 1110 195 1100 0011 122 0111 1010 159 1001 1111 196 1100 0100 123 0111 1011 160 1010 0000 197 1100
405U Radio Modem Module User Manual VALUE 8 BIT PATTERN VALUE 8 BIT PATTERN VALUE 8 BIT PATTERN 230 1110 0110 241 1111 0001 252 1111 1100 231 1110 0111 242 1111 0010 253 1111 1101 232 1110 1000 243 1111 0011 254 1111 1110 233 1110 1001 244 1111 0100 255 1111 1111 234 1110 1010 245 1111 0101 235 1110 1011 246 1111 0110 Page 58 © May 2000
