LRS-455-EU Data Transceiver Manual FreeWave Technologies LRS-455-EU Data Transceiver Version 1.0, Revision A FreeWave Technologies, Inc. 1880 South Flatiron Court Boulder, CO 80301 (303) 381-9200 (303) 786-9948 Fax www.FreeWave.com LUM0032AA Rev A Version 1.
LRS-455-EU Data Transceiver Users Manual LICENSED BAND WIRELESS DATA TRANSCEIVER USER MANUAL Copyright © 1995-2011 by FreeWave Technologies, Inc. All rights reserved. Published 2011. WARRANTY FreeWave Technologies warrants your FreeWave® Wireless Data Transceiver against defects in materials and manufacturing for a period of two years from the date of shipment. In the event of a Product failure due to materials or workmanship, FreeWave will, at its option, repair or replace the Product.
LRS-455-EU Data Transceiver Users Manual UL NOTIFICATION Models LRS-455-EU-C, LRS-455-EU-C-MS, LRS-455-EU-CE, and LRS-455-EU-CW are suitable for use in non-hazardous locations only. Input voltage for the above models is 6 to 30 volts DC. WARNING: DO NOT REMOVE OR INSERT DIAGNOSTICS CABLE WHILE CIRCUIT IS LIVE UNLESS THE AREA IS KNOWN TO BE FREE OF IGNITION CONCENTRATIONS OF FLAMMABLE GASES OR VAPORS. FCC NOTIFICATIONS This device complies with part 15 of the FCC rules.
LRS-455-EU Data Transceiver Users Manual ETSI NOTIFICATIONS LRS-455-EU series radios have been certified to the following ETSI standards: ETSI EN 300 113-1:2009 ETSI EN 300 113-2:2009 ETSI EN 301 489-1:2008 EN 61000-4-2: 1995 With A1:1998 and A2:2001 EN 61000-4-3: 2006 EN 61000-4-4: 2004 EN 61000-4-6: 1995 With A1:2004 and A2:2006 EN55022: 2006 ISO 7637-2: 2004 LUM0032AA Rev A Version 1.
LRS-455-EU Data Transceiver Users Manual LUM0032AA Rev A Version 1.
LRS-455-EU Data Transceiver Users Manual Table of Contents ABOUT FREEWAVE TRANSCEIVERS .................................................................................................................1 CHOOSING A LOCATION FOR THE TRANSCEIVERS ....................................................................................1 CHOOSING POINT-TO-POINT OR POINT-TO-MULTIPOINT OPERATION ........................................................................
LRS-455-EU Data Transceiver Users Manual FACTORY DEFAULT SETTINGS......................................................................................................................... 23 OPERATIONAL RS-422 AND RS-485 INFORMATION ................................................................................................. 24 RS-422 and RS-485 Full Duplex Pin-Outs .......................................................................................................... 25 RS-485 Half Duplex Pin-Outs .
LRS-455-EU Data Transceiver Users Manual About FreeWave Transceivers FreeWave transceivers operate in virtually any environment where RS232 data communications occur. A pair of transceivers function as a 9-pin null modem cable. If the FreeWave transceivers are to be used in an application where a null modem cable is used, such as communication between two computers, then the FreeWave transceivers can be connected directly.
LRS-455-EU Data Transceiver Users Manual Choosing Point-to-Point or Point-to-MultiPoint Operation A Point-to-Point network is limited to one Master and one Slave transceiver. In a Point-to-MultiPoint network (also referred to as MultiPoint network) the transceiver, designated as a Master, is able to simultaneously communicate with numerous Slaves.
LRS-455-EU Data Transceiver Users Manual Quick Start on a Point-to-MultiPoint Network The following is a quick start guide for setting up two transceivers in Point-to-MultiPoint mode. This mode allows for a Master to communicate with several Slaves simultaneously. 1. Connect the transceiver to the serial port of a computer either through a serial cable or via the diagnostics cable. Make sure to connect the antenna port to a load and the radio to a power source (typically, 6 to 30 VDC). 2.
LRS-455-EU Data Transceiver Users Manual Quick Start on a Point-to-Point Network When purchased as a pair, the FreeWave® Wireless Data Transceivers are shipped from the factory preconfigured to operate in Point-to-Point applications. To establish communications between a pair of FreeWave Wireless Data Transceivers just received from the factory: 1. Connect antennas to the transceivers. Freewave Technologies recommends that the antenna port be loaded at all times to prevent damage to the LRS-455-EU radios.
LRS-455-EU Data Transceiver Users Manual Setting up a Transceiver Operation Mode The Operation Mode option designates the method FreeWave transceivers use to communicate with each other. FreeWave transceivers operate in a Master to Slave configuration. Before the transceivers can operate together, they must be set up to properly communicate. In a Point-to-Point configuration, Master or Slave Mode may be used on either end of the communication link without performance degradation.
LRS-455-EU Data Transceiver Users Manual Point-to-Point Repeater (5) FreeWave allows the use of one repeater in a Point-to-Point communications link, significantly extending the operating range. When designated as a Repeater, a transceiver behaves as a pass-through link. All settings for the call book, baud rates and radio transmission characteristics are disabled. A Repeater will connect with any Master that calls it. The Repeater must be set up properly in the Master's call book.
LRS-455-EU Data Transceiver Users Manual Baud Rate This setting is the communication rate between the transceiver and the instrument to which it is connected. It is important to note that this is independent of the baud rate for the other transceiver(s) in the network. For example, a pair of transceivers may be used in an application to send data from remote process instrumentation to an engineer's computer.
LRS-455-EU Data Transceiver Users Manual Baud Rate Description Actual Baud Rate (selections 0-9) The actual baud rate for the transceiver’s data port. Data, Parity There are six data word length and parity configurations available to be used with FreeWave transceivers. The default setting is 0 (8, N, 1) and is the most commonly used serial communications protocol. Select the appropriate option to communicate with the end device.
LRS-455-EU Data Transceiver Users Manual Baud Rate Description pressing/toggling the Set-up button/switch, if available. OEM boards may also enter Setup when Pin 2 is grounded. The Main Data Port is the RS232 port. The OEM modules use a 2-row, 2 mm female connector. The diagnostic cable for this port (ASC2009DC) is available from FreeWave. TurnOn/OffDelay TurnOnDelay- Sets the delay between when the line drivers are turned on and when the data leaves the data port.
LRS-455-EU Data Transceiver Users Manual the radio will wait for 6 slots, gathering data up the whole time. At the end of the 6 slots, the radio will send all received data in one “burst”. This is the appropriate setting for most Modbus RTU devices.
LRS-455-EU Data Transceiver Users Manual Call Book The Call Book is required to be used in Point-to-Point networks. The instructions provided in this section are for Point-to-Point mode only. Using the Call Book offers both security and flexibility in determining how FreeWave transceivers communicate with each other. Three settings must be made for two FreeWave transceivers to communicate in Point-to-Point mode: 1.
LRS-455-EU Data Transceiver Users Manual Radio Transmission Characteristics The Edit Radio Transmission Characteristics option allows the user to modify several different parameters in the transceiver. Many of these parameters must be maintained throughout the network for proper functionality. Note: This menu is only for the sophisticated user who has a good understanding of the principles of radio data transmission.
LRS-455-EU Data Transceiver Users Manual The following 3 tables provide the information to determine optimum setting values. Minimum Packet Size Definition Min Setting Min Packet Size 0 1 2 3 4 5 6 7 8 9 0 16 32 48 64 80 96 112 128 144 Maximum Packet Size (2 level FSK) Max Setting Max Packet Size 0 1 2 3 4 5 6 7 8 9 32 48 64 80 96 112 128 135 135 135 (3) XMIT RATE FreeWave transceivers utilize a Master Transmit Beacon to provide low current consumption in the slave radios.
LRS-455-EU Data Transceiver Users Manual (5) RF XMIT POWER The RF Xmit Power parameter allows the user to control the output transmit power up to two watts (+33dBm). Note: For use in applications requiring greater than 70% transmit duty cycle, the LRS-455 series of radios must be attached to an appropriate heat sink. The following table shows RF TX output versus the RF Xmit Power setting.
LRS-455-EU Data Transceiver Users Manual Packet Size (0), the time will be approximately 5.9 ms. Please note that this latency can increase significantly if packets are lost between the Master and Slave. In Point-to-MultiPoint mode, there is no absolute guarantee that the state change will be communicated to all Slaves in the unlikely event that all repeated packets from the Master do not get through to all Slaves. Note: If DTRConnect is enabled and set to 2, the RTS to CTS feature will not work.
LRS-455-EU Data Transceiver Users Manual Current Draw Setting Description 0 Lowpower, disabled 1 LEDs dimmed, transceiver remains awake, transceiver is listening to the Master’s transmissions on every slot, and transceiver’s data port is shut down if the RTS line is deasserted (low). In this case, the transceiver needs to be awakened before it will be able to send data to the Master.
LRS-455-EU Data Transceiver Users Manual MultiPoint Parameters When installing MultiPoint networks it is important to do some up front planning. Unlike Point-to-Point networks, a Point-to-MultiPoint network requires several parameters are set consistently on all transceivers in the network. This includes RF Data Rate and Min and Max Packet Size. Note: If several independent MultiPoint networks are to be located in close proximity the planning becomes more critical.
LRS-455-EU Data Transceiver Users Manual (2) M AX SLAVE RETRY The Max Slave Retry setting defines how many times (0 to 9) the Slave will attempt to retransmit a packet to the Master before beginning to use a back-off algorithm (defined by the Retry Odds setting). Slave retries will stop when an acknowledgement is received from the Master. (3) RETRY ODDS While packets transmitted from the Master to the Slaves in a MultiPoint network are not acknowledged, packets transmitted from Slaves to the Master are.
LRS-455-EU Data Transceiver Users Manual 1PPS Enable/Delay Setup: 1. The 1 PPS Enable/Delay parameter must be set to 0 in the Master. 2. The Master must have a 1 PPS pulse on the DTR pin. 3. The 1 PPS Enable/Delay parameter on the Slaves must be enabled. Slaves are calibrated at the factory. Calibrating a Slave in 1PPS Enable/Delay mode 1. Trigger an oscilloscope on the 1 PPS pulse on the DTR line of the Master. 2. Monitor the CD line of the Slave. 3.
LRS-455-EU Data Transceiver Users Manual The default (disable) setting for both Rcv and Xmit is F. Notes: A Master will always transmit and receive on 0. The Master may be set to use alternate Subnet ID values. Changing these settings on the Master is not recommended, under normal circumstances. In some MultiPoint Networks, the FreqKey will be at the same setting for all transceivers. In other networks, where parallel Repeaters are introduced, the FreqKey value will need to change.
LRS-455-EU Data Transceiver Users Manual Radio Information Radio Statistics in the Main Menu allows the user to view data transmission statistics gathered by the transceiver during the most recent session. This is valuable when the user needs to know the signal strength and noise levels of the link. Statistics are gathered during each data link and are reset when the next link begins. See display below.
LRS-455-EU Data Transceiver Users Manual Ideally, noise levels should be below -120 dBm units and the difference between the average signal level and average noise level should be 26 dB or more. Noise levels significantly higher than this are an indication of a high level of interference that may degrade the performance of the link. High noise levels can often be mitigated with band pass filters, antenna placement or antenna polarization.
LRS-455-EU Data Transceiver Users Manual Factory Default Settings FreeWave 455MHz transceivers are shipped from the factory with the following Default Settings: Operation Mode Default MultiPoint Parameters Point to Point Slave 1 (1) MASTER PACKET REPEAT 0 Set Baud Rate Default (2) MAX SLAVE RETRY 9 Baud Rate 19200 (3) RETRY ODDS 0 (A) Data Parity 0 (4) DTR CONNECT 0 (B) Modbus RTU 0 (6) NETWORK ID 255 (C) RS232/485 0 (7) RESERVED (D) Setup Port 3 (8) MULTI MASTER SYNC 0 (E) Tu
LRS-455-EU Data Transceiver Users Manual Additional Transceiver information This section contains additional important information about FreeWave transceivers. The following topics are included in this section: Operational RS422 and RS-485 Information RS232 Pin Assignments OEM Board Pin Assignments Operational RS-422 and RS-485 Information For both RS-422 and RS-485, the FreeWave transceiver can drive 32 standard unit loads and loads the bus with only 1/8 unit load.
LRS-455-EU Data Transceiver Users Manual RS-422 AND RS-485 FULL DUPLEX PIN-OUTS Function RX+ RXTX+ TXSignal Ground Bare Board Pin Number 7 9 5 10 4 or 6 DE-9 Pin Number 3 7 2 8 5 Bare Board Pin Number Short 5 and 7 Short 9 and 10 4 or 6 DE-9 Pin Number Short 2 and 3 Short 7 and 8 5 RS-485 HALF DUPLEX PIN-OUTS Function Wire to both pins for Bus + Wire to both pins for Bus Signal Ground RS232 Pin Assignments Pin Assignment Signal Definition 1 CD Carrier Detect Output Used to show an RF connecti
LRS-455-EU Data Transceiver Users Manual RF Board Pinout The 400 MHZ Series transceivers are available in both TTL and RS232 versions. The TTL versions use reverse polarity from standard RS-232 at 0 to 5 Volt levels. All pin descriptions and pin numbering are the same as the RS232 version.
LRS-455-EU Data Transceiver Users Manual Frequency List The LRS-455 transceivers tune from 435MHz to 470MHz with a tuning resolution of 6.25KHz. This gives a total of 5600 available channels. Using the license allowed frequency, the channel number can be determined using the following formula. Channel number = FMHz (160) – 69600 Note: This is a partial list. If the required frequency is not listed use the FMHz formula to obtain the appropriate channel number.
LRS-455-EU Data Transceiver Users Manual Channel# Frequency Channel# Frequency Channel# Frequency 420 437.625 2480 450.500 4540 463.375 440 437.750 2500 450.625 4560 463.500 460 437.875 2520 450.750 4580 463.625 480 438.000 2540 450.875 4600 463.750 500 438.125 2560 451.000 4620 463.875 520 438.250 2580 451.125 4640 464.000 540 438.375 2600 451.250 4660 464.125 560 438.500 2620 451.375 4680 464.250 580 438.625 2640 451.500 4700 464.375 600 438.
LRS-455-EU Data Transceiver Users Manual Channel# Frequency Channel# Frequency Channel# Frequency 980 441.125 3040 454.000 5100 466.875 1000 441.250 3060 454.125 5120 467.000 1020 441.375 3080 454.250 5140 467.125 1040 441.500 3100 454.375 5160 467.250 1060 441.625 3120 454.500 5180 467.375 1080 441.750 3140 454.625 5200 467.500 1100 441.875 3160 454.750 5220 467.625 1120 442.000 3180 454.875 5240 467.750 1140 442.125 3200 455.000 5260 467.
LRS-455-EU Data Transceiver Users Manual Channel# Frequency Channel# Frequency 1540 444.625 3600 457.500 1560 444.750 3620 457.625 1580 444.875 3640 457.750 1600 445.000 3660 457.875 1620 445.125 3680 458.000 1640 445.250 3700 458.125 1660 445.375 3720 458.250 1680 445.500 3740 458.375 1700 445.625 3760 458.500 1720 445.750 3780 458.625 1740 445.875 3800 458.750 1760 446.000 3820 458.875 1780 446.125 3840 459.000 1800 446.250 3860 459.
LRS-455-EU Data Transceiver Users Manual Errata FIRMWARE VERSION 1.70 • Point-to-Point Repeaters are NOT supported FIRMWARE VERSIONS 1.67O AND LOWER • Setting Master Packet Repeat to 0 and Modbus RTU to 1 results in a large data transmission delay. Master Packet Repeat should be set to 1 or higher if the Modbus RTU setting is enabled. LUM0032AA Rev A Version 1.
