Template:FMX640 Short Burst Data

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Introduction

Since 00.02.05 firmware version device supports Iridium devices which can send short burst data (SBD) to the server. This means that some data can be sent from the FM device to the server through satellites. From firmware version - 01.02.22.Rev.02, support for Iridium Edge is added. Iridium Edge features an all-in-one SBD module and antenna, with power supply. The plug-and-play satellite IoT terminal can be easily paired with device in order to expand their functionality to no GSM coverage zones. Current Iridium implementation offers ability to generate and send SBD records after set period after the GSM signal is lost. This ensures constant connectivity as Iridium network is available globally.

Connecting Iridium device to

In order to properly connect Iridium device to , Iridium has to be connect via RS-232 COM1 or COM2. Also PIN6 - power control (reference in image below) has to be connected to one of the DOUTs, in order to allow device to power ON/OFF Iridium device on demand.




Pin. No
Signal name
Signal direction (with respect to Iridium Edge)
Description

1
Spare
-
Unused

2
Ground
Input
Signal and power GND

3
RS232_RX
Input
RS232 input

4
RS232_TX
Output
RS232 output

5
Power
Input
9-32 V positive terminal

6
ON/OFF
Input
Optional line to power down Iridium edge

7
Network available
Output

8
Power detectection
Output
Active high then Iridium Edge is powered

Configuring

In order to get SBD records, it is needed to enable Iridium support on , first it is necessary to enable RS232 support and select “Satellite backup” mode on COM1/COM2 settings.

In order to get SBD records, you have to connect the device to FMX640 COM1 or COM2 port. Select COM1 or COM2 mode Satellite backup mode. Those settings could be found in RS232/RS485 TAB in the configurator. The Baud rate for satellite devices is 19200 bps. Furthermore, TSM232 functionality should be enabled. These settings can be found in the Features TAB in Short burst data settings. See the picture below.

You should also configure periodic Alarm record save. If the timeout is set to 0, no periodic records are going to be made. It is not recommended to save records often because of satellite traffic prices. 8 kilobytes data limit counter is set which is reset every month. In addition, you can select which IO element can generate the Alarm priority record. The configurable IO parameters are shown as SBD IO sources in the picture below. In order to do that you need to configure these IO elements as a Panic priority. If properly configured SBD records are generated and sent if there is no GSM connection.


In addition, you can select which IO element can generate Satellite records. In order to do that you need to go to the IO tab select IO record priority Panic what you want to get that data through satellites if there is no GSM connection. In the scenario shown in the above picture when a panic record is made (generated by Digital Input 1 or Digital Input 2) internal 90 seconds timer will start to tick and if that timeout device will not send a record through the GPRS network it will be sent with Iridium satellites. 9 elements can generate Alarm priority records in the current (00.02.05) firmware version. These elements are:

  • Digital input 1
  • Digital input 2
  • Digital input 3
  • Digital input 4
  • Digital output 1
  • Digital output 2
  • Digital output 3
  • Digital output 4
  • Speed

Record which will be sent through the Iridium satellite network will be different than the regular record. It will contain 4 bytes timestamp, 3 bytes longitude, 3 bytes latitude, 1 byte record generation info, 1 byte DIN, DOUT info, 1 byte speed value.

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