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SOFTLINK WACO WM868 Instruction Manual

Wireless communication system
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WIRELESS COMMUNICATION SYSTEM
WACO WM868
WM868-TI4
Revision 2.0
SOFTLINK s.r.o., Tomkova 409, 278 01 Kralupy nad Vltavou, Czech Republic
Phone.: +420 315707111,
e-mail:
sales@softlink.cz,
www.softlink.cz

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  • Page 1 WIRELESS COMMUNICATION SYSTEM WACO WM868 WM868-TI4 Revision 2.0 SOFTLINK s.r.o., Tomkova 409, 278 01 Kralupy nad Vltavou, Czech Republic Phone.: +420 315707111, e-mail: sales@softlink.cz, www.softlink.cz...

  • Page 2: Table Of Contents

    Contents 1 Introduction 1.1 WACO communication system ........1.2 LoRaWAN communication system .
  • Page 3 List of Figures Principle of data transmission from the WM868-TI4 module through a communication gateway . . . Principle of data transmission from the WM868-TI4 module to another WACO radio module ..Appearance of the WM868-TI4 module .

  • Page 4: Introduction

    Introduction This document describes the configuration options of the WM868-TI4 radio module, which is used for measuring temperature in interiors and for radio transmission of information about the current state of the measured quantity through radio messages in WACO, LoRa, or Wireless M-Bus format. WACO communication system WACO (Wireless Automatic Collector) is radio frequency (RF) communication system intended especially for the remote reading of consumption meters (smart metering area), automatic data collection from sensors (telemetry...

  • Page 5: Wireless M-Bus Communication Protocol

    Wireless M-BUS Communication Protocol Wireless M-BUS is the communications protocol described by international standards EN 13757-4 (physical and link layer) and EN 13757-3 (application layer), which is intended primarily for radio transmission of remote reading values from consumption meters and sensors. Protocol Wireless M-BUS (hereinafter WMBUS”) is based on a ”...

  • Page 6: Principle Of Data Transmission From The Wm868-Ti4 Module To Another Waco Radio Module

    In WACO transmission mode, messages can be transmitted directly to another WACO system module that is con- stantly receiving. Figure shows the data transmission from the WM868-TI4 module to the so-called ”Collecting Unit” of the WACO system, which collects data from battery-powered WACO modules, converts the data into standard M-Bus protocol messages and forwards them to the bus control unit (device type ”M-Bus Master”) in M-Bus format on a physical bus.

  • Page 7: Overview Of Technical Parameters

    Overview of technical parameters An overview of the technical parameters of the WM868-TI4 module is given in Table 1. Table 1: Overview of technical parameters of the WM868-TI4 module Radio interface Frequency band Transmission modes WACO, wM-Bus, LoRa Modulation type - WACO GFSK Modulation type - wM-Bus Modulation type - LoRa...

  • Page 8: Module Configuration

    ” Description of connecting the module to a mobile phone via Bluetooth wireless connection and general rules for configuring the module using the mobile application ”Softlink Configurator” are described in Chapter 3 of the above- mentioned manual Configuration of wacoSystem product family devices”. In section ”Setting the parameters...
  • Page 9 wm868-TI4>conf Config : OK --- WACO protocol --- channel Group Hop count Repeater Test timeout: 20 sec. Encrypt port: Repeat count: 1 Master : 0x010000FE Repeat tout : 1 (50 ms) --- RF Driver --- TX power : 14 dBm RX timeout : 4 (200 ms) High Gain --- Application ---...

  • Page 10: Overview Of Wm868-Ti4 Module Configuration Commands ("Help")

    3.1.2 Overview of WM868-TI4 module configuration commands (”HELP”) To display a summary of configuration commands (”HELP”) and their parameters, enter the command ”?” into the command line and press the ”ENTER” key. The following listing will appear in the terminal window: wm868-TI4>? - help info...

  • Page 11: Commands For Basic Module Control

    3.1.3 Commands for basic module control This group of commands contains commands for controlling and monitoring the module as a whole. These are the following commands: wm868-TI4>? - help info - print system info conf - print configuration write - write configuration clear - clear configuration mode...
  • Page 12 parameters stored in FLASH. If the parameter should be set only temporarily (for example when turn on a ”test”), it is not needed to save the operational configuration to FLASH memory (after finishing diagnostics the ”test” will be turned off anyway). However, if it is necessary for the currently changed operating parameters to remain set permanently, it is necessary to enter at the end of the configuration sequence a command to save the current configuration to FLASH..

  • Page 13: Commands For Configuring The Rf Subsystem Of The Module

    3.1.4 Commands for configuring the RF subsystem of the module This group of commands is used to set those parameters of the RF subsystem of the WM868-TI4 module that are common to all modes. These are the following commands: - help info - print driver info clear...

  • Page 14: Commands For Configuring Waco Transmission Mode

    wm868-TI4>rf rxt 10 RX timeout : 10 (500 ms) wm868-TI4> Using the command ”rf active”, you can switch the RF subsystem to a permanently active mode, where the receiver is constantly receiving, except for moments of transmission. For the battery-powered WM868-TI4 module, such a setting would lead to rapid battery discharge, so it is strongly advised against using this command during normal module operation.
  • Page 15 kb/s with a theoretical receiver sensitivity of about 104 dBm, which allows communication in built-up objects in the order of tens of meters. Channels labeled ”3”, ”4”, ”5” and ”6” have a width of 15 kHz and are used for data transmission at a speed of 2.4 kb/s with a theoretical receiver sensitivity of about 120 dBm.

  • Page 16: Commands For Configuring Wireless M-Bus Transmission Mode

    WACO protocol port number and any string of up to 16 characters after the ”waco encrypt” command. Based on this string, the module generates a cipher according to the proprietary Softlink algorithm. Spontaneously sent INFO messages of the WM868-TI4 module have port number ”37”. The same string can be used to generate a key for decrypting messages on the receiving side (in the central data collection application) using the same algorithm.
  • Page 17 M-Bus standard. The code value for the WM868-TI4 module is set at the factory to ”SFT” (unique code of the manufacturer SOFTLINK) and unless there is a serious reason, the module manufacturer does not recommend changing the manufacturer code setting.

  • Page 18: Commands For Configuring Lora Transmission Mode

    The command ”wmbus ekey” is used to set the encryption key for message encryption using the AES-128 algorithm. Enter the 16-byte encryption key using the ”wmbus ekey” command followed by a string of 16 bytes, which we enter in hexadecimal form as 32 consecutive characters (characters ”0” to ”f”, without spaces and without prefixed ”0x”).
  • Page 19 The commands ”lora info” and ”lora regs” are used to display the settings of the LoRa subsystem. These commands are only used for module diagnostics in the manufacturer’s laboratory. The ”lora band” command can be used to set the regional frequency plan according to the LoRa specification. For the Czech Republic region in the 868 MHz band, the frequency plan EU863-870 (abbreviated as ”EU868”) is reserved, which corresponds to option ”0”.
  • Page 20 wm868-TI4>lora rxdly Recv Delay : 2 wm868-TI4>lora rxdly 1 Recv Delay : 1 wm868-TI4> In ABP mode (Activation by Personalization), the first receive window always opens with the set ”lora rxdly” delay. This value is also stored in the network’s BackEnd, so the network always sends reverse channel messages in this window.
  • Page 21 --- LoRa App --- Dev Addr : 0x00000000 NwkSKey : 1a2b3c4d5e6fa1b2c3d4e5f6778899af AppSKey : 00000000000000000000000000000000 Similarly, the key for encrypting application data is entered using the ”lora appskey” command. Warning! For modules with OTAA activation mode, these two keys are not entered, the module creates them during the initialization process based on information from the network.

  • Page 22: Commands Of The "Application" Group For Setting The Data Sending Application

    be entered into the module configuration. When the module first logs into the network, it receives back from the network the network address ”NetAddr” and the ”JoinNonce” information, which it uses to create the ”Network Session Key” and ”Application Session Key” keys. The network BackEnd simultaneously generates both of these keys using the same algorithm.

  • Page 23: Commands For Setting The Bluetooth Subsystem

    wm868-TI4>system - help info - print system info - set RF address txtest - run TX test debug - set debug level dump - [address] dump memory modify - [address] modify memory task - print tasks mbox - print mailboxes port - print port A,B,C,H - set MCO output, 0-disable,1-enable...

  • Page 24: Setting Module Parameters Using A Mobile Application

    The description of connecting the module to a mobile phone via Bluetooth wireless connection and general rules for configuring the module using the ”Softlink Configurator” mobile application are described in Chapter 3 of the ”Configuration of wacoSystem product line devices” manual.
  • Page 25 - current processor temperature - packet transmission statistics since reset The ”General Settings RF” form is used to set communication parameters. The form contains the following information and tools: - setting the sending period of information messages - setting the communication mode The ”WACO RF settings”...

  • Page 26: Setting Module Parameters From A Remote Computer Using The Reverse Channel

    Figure 4: Preview of forms for setting the WM868-TI4 module using a mobile application Setting module parameters from a remote computer using the reverse channel The WM868-TI4 module supports communication in the so-called reverse channel (from the central application to the module) in WACO and LoRa transmission modes. The possibilities of two-way communication via the reverse channel can be used for remote parameter setting from a remote computer.

  • Page 27: Structure Of The Module's Data Message

    Individual variables are coded into the data content of the message by using of ”NEP” proprietary coding system invented by SOFTLINK. In this system each type of variable has its own designation called ”OID” (Object ID), which determines meaning, character and data type of the variable. These variables, that could be used multiple times (as multiple inputs, temperatures, voltages...) must be used jointly with order number of the variable called...

  • Page 28: Preview Of " Nep Coding Table" For Coding Of Variables In Waco System

    Figure 6: Structure of WACO system data packet Figure 7: Preview of NEP coding table” for coding of variables in WACO system ” If a receiver of ”INFO” messages from the module is WACO collection unit” (see paragraph Module usage”), ”...

  • Page 29: Lora

    Message length (L) Message length in Bytes Packet type (C) ”Spontaneous User Data” Manufacturer ID (M) ”SFT” (Softlink manufacturer code) Serial number (A) Module identification according to M-BUS standard (configurable) Version (V) Module generation/version according to M-BUS standard (configurable) Medium (T) Type of measured medium according to M-BUS standard (configurable)

  • Page 30: Operating Conditions

    Operating conditions This section of the document provides basic recommendations for transportation, storage, installation and operation of WM868-TI4 type radio modules. General operational risks The WM868-TI4 radio modules are electronic devices powered by their own internal battery, which measure ambient air temperature at short intervals and send a radio message with the current temperature reading at set intervals.

  • Page 31: Environmental Protection And Recycling

    Environmental protection and recycling The equipment contains non-rechargeable lithium battery. It is necessary to remove battery before module disposal and dispose battery separately in compliance with the dangerous waste disposal rules. Damaged, destroyed or discarded devices cannot be disposed as household waste. Equipment must be disposed of in the waste collection yards, which dispose electronic waste.

  • Page 32: Replacing The Wm868-Ti4 Module

    These conditions can either be estimated based on previous experience or by measuring signal strength using a WACO RFAN 3.x analyzer. The minimum received signal level (RSSI) value for WACO WM868 series modules in WACO transmission mode is -105 dBm, but at this level there is no reserve for temporary signal ”fades” and it is almost certain that radio communication with the module will occasionally fail.

  • Page 33: Checking Module Functionality

    as disassembled and complete the appropriate documentation prescribed for this case by internal regulations. If possible, ensure deactivation of the module in the remote reading system. Checking module functionality After putting the module into operation (or after each repair and module replacement), it is recommended checking its basic functions: check the setting of basic module parameters, especially the message sending system parameters (transmission mode, encryption, transmission period, frequency channel, transmission power);...

  • Page 34: Troubleshooting

    Troubleshooting Possible causes of system failures During the operation of the WM868-TI4 device, failures, functional outages, or other operational problems may occur, which can be divided into the following categories according to their cause: 6.1.1 Power supplying failures The module is supplied by electrical power from the long-life internal battery. Approximate battery life is specified in paragraph Modul usage”.

  • Page 35: Sensor Failures

    If above described indications of unreliable radio-communication become evident, proceed with troubleshooting of the malfunctioning in following steps: visually check surrounding of the installation site to find out if there are any changes that can influence radio signal (e.g. new objects, things, machines...). If there are such negative circumstances, solve the trouble by reorganization of the object or by redesign of radio network;...

  • Page 36: Additional Information

    This manual is focused on description, parameters and configuration options of radio modules WM868-TI4 of the WACO RF system, operating in the 868 MHz band, that are a part of the Softlink’s wacoSystem product family. More information about all WM868 (WACO), WB169 (Wireless M-BUS), WS868 (Sigfox), or NB (NB-IoT) series of the modules can be found on the manufacturer website: www.wacosystem.com...

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