UM1008 STMICROELECTRONICS | Alldatasheet
Document overview
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- PDF pages: 32
Technical content
Datasheet sections
- 1 Document conventions
- 2 Connection procedure
- 3 GUI installation
- 3.1 System requirements
- 3.2 Installing the software
- 4 Getting started
- 4.1 Introduction
- 4.2 Adding other nodes
- 4.3 Opening the COM
- 5 Services
- 5.1 Basic modem configuration
- 5.2 PHY layer communication
- 5.2.1 Synchro indication information
- 5.2.2 PHY data indication information
- 5.2.3 Synchronization management
- 5.3 MIB operations
- 5.4 MAC layer communication
- 5.4.1 MAC frame transmission
- 5.4.2 Synchro indication found information
- 5.4.3 MAC data indication information
- 5.4.4 Synchronization management notification
- 5.4.5 Statistic information
- 5.5 Alarm services
- 5.6 Repeater Call
- 5.6.1 Repeater Call for client nodes
- 5.6.2 Repeater Call for server nodes
- 6 References
- 7 Revision history
its registers and functions, as described in [2]. board and a power supply board). Figure 1. ST7570 typical application environment
1 Document conventions
Table 1. List of abbreviations
2 Connection procedure
- Connect the board to the PC using a USB cable.
- Plug a power cable into the board AC power plug.
- Plug the power cable into the power socket.
- As soon as the board is powered, the power LEDs switch on.
- Download the latest available Virtual COM Port (VCP) drivers from the FTDI web site
(www.ftdichip.com) and unzip them to a location on the host PC.
- Connect the EVALKITST7570-1 to a spare USB port on the host PC. The screen
then click “Next” to proceed with the installation. Figure 2. Hardware update wizard screen
- A message should then appear indicating that the installation was successful
(Figure 7). Click “Finish” to complete the installation for the first port of the device. Figure 7. Completing the found new hardware update wizard
3 GUI installation
3.1 System requirements
- Windows NT/2000/XP operating system
- A hard disk with at least 15 MBytes of free space to install the GUI
- One or more USB 1.1 ports
3.2 Installing the software
Follow the instructions below to install the ST7570 GUI software.
- Extract the contents of the archive in a new directory.
- Launch “setup.exe” to start the install procedure.
- Press the “Next” button ( Figure 8).
Figure 8. ST7570 GUI installation wizard
- Once installation has completed, press the “Finish” button to complete the process
Figure 11. Application installed
4 Getting started
4.1 Introduction
- Establish a connection to the ST7570 modem
- Configure the ST7570 and manage all its settings
- Perform any transmission and reception of data and alarms over the power line Figure 12 shows the main window of the ST7570 GUI. The panel is divided into two sections: 1. Node panel: used to control an ST7570 node. In case of multiple nodes connected to the GUI, the user can switch between the panels through the node panel tabs. 2. Console: box displaying where all the messages exchanged with the node are displayed. In the case of multiple nodes, this panel is common to all the nodes.
Figure 12. ST7570 GUI main window
Figure 13. ST7570 GUI tooltip example
4.2 Adding other nodes
By default, the GUI shows only one node tab in the panel (“Node 1" in Figure 12). Figure 14. “Add node” procedure to add a new node As a result, a new panel tab appears (with tab “Node 2" in Figure 15). Figure 15. The new node has been added - (panel Node 2) is now available
4.3 Opening the COM
- Automatically identify or manually select the COM port number associated to the board
- Select the desired baud rate. Note that modem boards come with a factory default
baud rate equal to 57600 bps. Figure 16. Modem connection procedure Figure 17. Modem connection success
Figure 21. Automatic COM port number detection procedure: final step
5 Services
5.1 Basic modem configuration
At power-on, the modem is in IDLE state (refer to [2.]). through the “Configure” button.
- Operating mode
- Bit rate
- Mains frequency
- Transmission gain
- Channel frequencies
- Access layer mode
- Current control A confirmation (positive or negative) appears on the console notifying that either the configuration required has been successfully set or an error has occurred (Figure 22).
Figure 22. Modem configuration transmission and reception on the power line.
5.2 PHY layer communication
- Open two COM ports, as described in Section 5.3.
- Configure the modems, as described in Section 6.1 (first node as PHY client, second
- Customize (if desired) the payload to be transmitted.
- Press the CMD_DataRequest button.
Figure 23. PHY power line transmission
- This basic communication test has the same steps as the test described in [2.].
Figure 24. Communication notifications
5.2.1 Synchro indication information
regarding signal and noise levels, electrical phase and embedded PGA code. Figure 25. Synchro Indication information
5.2.2 PHY data indi cation information
frame reception, and some statistical information about the demodulation procedure. Figure 26 shows how the ST7570 GUI presents the PHY Data Indication.
Figure 26. Data indication information
5.2.3 Synchronization management
synchronization can be achieved through a valid reception only. status of the modem, as it implements the CMD_SyncroStatus command [2.]. possible answers, as in Figure 27.
5.3 MIB operations
through MIB write and read operations. Figure 29 shows the panel that appears once the “MIB” button in the node panel is pressed. Figure 29. MIB parameter panel default appearance
- Addresses: Local MAC address, Initiator MAC address, FIMA and LIMA, and MAC
- Timeout: Time Out Synchro Confirm[sec], Not OK[sec], Not Addressed[min] and
Intelligent Synchronization[min].
- Repeater settings: (for server only).
Figure 29 shows their position in the “MIB” panel.
5.4 MAC layer communication
making sure the operating mode is set to MAC instead of PHY .
5.4.1 MAC frame transmission
a proper command to the modem with the parameters values. Figure 33. MAC layer frame composition notifications in the server side. Figure 34. MAC communi cation notifications
5.4.2 Synchro indicat ion found information
PHY layer and is explained in Section 6.2.1. Figure 35. Synchro indication found information
5.4.3 MAC data indication information
information about the frame credits and the eventual padding. Figure 36. Data indication information
5.4.4 Synchronization m anagement notification
Figure 37 shows an example of the synchronization lost notification. All the related fields are coded in accordance with [2.]. Figure 37. Synchro indication lost information
5.4.5 Statistic information
Reset Count's button resets all the counter values. Figure 38. MAC statistic information counters
5.5 Alarm services
- Alarm Repetition number, Alarm Before Indication number, Alarm Reject Window
number: MIB object 0085h in [2.].
- Disable Alarm Indication, Disable Alarm Re petition, Disable Alarm SN Indication: MIB
Figure 39. Alarm service settings
received alarms in the server side. Figure 40. Alarm service notifications Figure 41. Alarm counters controls
5.6 Repeater Call
the “RC Request Catch” setting must be ticked as in Figure 42. Figure 42. RC request catch setting
5.6.1 Repeater Call for client nodes
- send a MAC data request command to the connected modem following the upper protocol layer specifications for Data Payload; the Payload window automatically switches to the RC Request (BASIC) item; the data transmission takes into account the credit parameters expressed in the GUI (the IC parameter must be greater than 0 so that the modem can accept the RC Request)
- send an RC Request to the modem while powerline transmission is in progress to respect the RC mechanism, with the TX_POS, RC_THRESHOLD parameters expressed in the GUI.
Figure 43. Repeater Call request for client
5.6.2 Repeater Call for server nodes
menu from the MIB panel, as in Figure 44. Figure 44. Repeater settings for server node
Figure 45. RC confirm for server node
6 References
- STMicroelectronics, ST7570; S-FSK power line networking system-on-chip, datasheet 2. STMicroelectronics, UM0934; FSK, PSK Multi-Mode Power Line Networking System On Chip, user manual 3. International Electrotechnical Commission (IEC), IEC 61334-5-1 ed2.0, www.iec.ch
7 Revision history
Table 2. Document revision history 22-Nov-2010 1 Initial release.