S-LOG

Serial-LOG - Secure Digital Interface

RS232; TTL; I2C BUS

S-LOG English Tech. Manual PDF format.

Ver. 5.20 - Rel. 01 Decenber 2008.

The S-LOG is a complete system that saves on memory cards the data received from serial communication lines, specifically designed for an industrial use and for a direct mounting on automatic machines. The accepted memory cards are the SD (Secure Digital) and the MMC (Multi Media Card), that are the ones actally provided of the best features concerning price, handling and reliability. The S-LOG is a complete peripheral device, capable to receive serial data from an external system with different formats and to write them on the listed memories supports. A list of proper commands allow to configure the S-LOG in order to be linked and used by a large number of installed devices and in order to satisfy many data logger applications.

The memory card is organized with FAT16 standard and it can be used by any personal computer, as an external removable disk. This really simplify the data transfer and use in fact each PC, provided of memory cards interface, can read, write, copy, open the available files, without any limits.

Some additional features as the presence of a Power Supply Section that acceppts a wide range input, a Plastic Container that speed up the installation and a Real Time Clock that adds a time reference to saved data, complete the product with an optimum price/performance ratio.

The S-LOG is the suitable component in all the applications where data must be saved, even in big quantity up to 2 GigaBytes maximum limit, by using a communication serial line that is normally provided by each automation and control systems, available on the market. Among the typical application we can remind the replacement of printers with serial interface, the logging of data transmitted by measure and analysis systems, the momorization of status, alarms, and other operating conditions, the logging of data exchanged on a serial line for a following inspection and searching, etc. In all the applications the memory card is removed from S-LOG and then used by any other system capable to manage the FAT16 standard: here the data can be processed, diplayed and registered in archives either by standard or dedicated programs.

The data saved on the memory card are exactly the same ones received from external system. When required the S-LOG can perform some autonomous operations on the saved data as: the partition of data on different files upon a tme basis, the addition of strings that help the data identifications, the addition of formatters that simplify the following data usage and the addition of current date and time in order to temporally collocate the data.

The serial communication with the external system can be established through an Asynchronous Line buffered in RS 232 or TTL or alternatively through an I2C BUS Synchronous Line. The selection of the used serial line and of the relative parameters is comfortably executed with a specific Configuration Modality, directly accessible to the final user.

Hardware features of S-LOG, complete of possible options, are listed below:

• Modular plastic container DIN 50022 modulbox, M3 HC53 model
• Overall dimension: 90x53 mm frontal size; 58 mm height
• Mounting on DIN Omega rails DIN 46277-1 and DIN 46277-3
• Very low weight: only 84 g.
• Connector for memory cards in SD and MMC formats
• Circuit for recognition of memory card Insertion and its Write Protect status
• 1 bicolour LED for visual signalations,driven with different modalities
• Real Time Clock backed by proper Lithium battery
• Asynchronous communication serial line configurable in RS 232 or TTL
• I2C BUS synchronous communication serial line
• 1 digital output in Open Collector, connected to internal connector
• 2 handy connectors for a fast wiring of:
  • Power supply
  • Communication lines
• Power supply section capable to support also small external loads
• Two different power supply types:
  • 5 Vdc regulated
  • unregulated wide range from 10 to 38 Vdc or from 8 to 24 Vac
• Minimum required power equal to about 0,390 W + memory card consumption
• On board protection against voltage peaks by TransZorb
• Customized firmware and program under specific request of the user
• For specific requirements about functionality and price, please contact directly grifo®

Typical Graphic Picture of data collected by S-LOG and worked out with EXCEL.

In order to simplify the use of S-LOG the grifo® has provided a list of functionalities and features that speed up the working setup of the final user. These general features, are summarized below:below:

• Management of memory cards with capacity up to 2 GBytes.
• Memory cards managed as a Disck with FAT16 format.
• Data on disk are organized in Folders and File, compatible with the most diffused Operating Systems for PC (MS-DOS, Windows, etc.).
• File and Folders Names are managed with 8.3 format (8 characters for name and 3 for extension): the extended names are converted into this format.
• Management of current Date and Time from RTC that are used as a temporal reference for the saved data.
• Possibility to set and acquire the Real Time Clock (RTC) and all its temporal parameters (hour, minutes, seconds, day, month, year).
• Recognition and management of the memory card Insertion.
• Recognition and management of the memory card Write Protect selector.
• Memory card status visualized by Bicolour LED, that shows up to 5 different conditions.
• Complete management of the possible Errors: 12 general and 9 for the disk.
• The Errors are acquired and cleared through specific commands in order to simplify the solution of possible damages and malfunctions.
• Tens of Commands dedicated to typical configuration requirements (see details in following table).
• All the configuration Commands, and the relative Parameters and Responses, are exchanged through the synchronous Communication Line by following a proper logic, physic and electric protocol. The communication logic protocol for configuration is ASCII in order to simplify and speed up the use.
• The S-LOG acts as a Data logger that saves on memory card all the Data Received, with the modalities preset with configuration.
• Possibility to define the Action performed during the memory card Insertion.
• The name of the file generated by S-LOG can be defined in configuration, complete of possible saving Folder.
• Data saved on a Single File or on Different Files associated to a time period.
• The Duration time for different files saving can be Hour, Day, Month or Year and the file name is the start acquisition time, with the yyyymmdd.hh format.
• Possibility to automatically add a Label at the beginning of the generated file, as an header that supply informations on the saved data.
• Recognition and management of a Data Group based on time interval and defined in configuration; the end of a group and the begginning of the following one coincides with a time interval with no data received from external unit.
• Possibility to automatically add a Prefix at the beginning of a data group.
• Possibility to automatically add a Suffix at the end of a data group.
• Label, prefix and suffix are defined in configuration with different Attributes: Messages, Strings, current Date, current Time, current Milliseconds abd some Formatters. By defining these attributes the user can decide to save additional information on the file and the format of these information.
• Possibility to select the Physic and Electric Protocols, that will be used for the reception of the data to save, through proper configuration commands.
• The provided Electric Protocol are:
  • Asynchronous Serial Line buffered in RS 232 or TTL.
  • I2C BUS Synchronous Serial Line.
• Selectable Physic Protocol for asynchronous serial communication:
  • 300, 600, 1.200, 2.400, 4.800, 9.600, 19.200, 38.400, 57.600 or 115.200 Bauds;
  • 8 bits for character;
  • No, Even, Odd Parity;
  • 1 or 2 Stop bits.
  • Hardware (RTS, CTS), Software (XON, XOFF) or repeat software, communication Handshaking
• Selectable Physic Protocol for I2C BUS synchronous serial communication:
  • Bit Rate from 225 to 460.799 bps;
  • Slave mode;
  • S-LOG Slave Address range from 00H to FEH with step of 2, equal to 128 different values.
• Serial Network connection through I2C BUS synchronous protocol.
• Medium Speed for receveing and saving data on memory card are:
  • 5.000 Bytes/second, with asynchronous serial line at 115.200 Baud
  • 6.000 Bytes/second, with synchronous I2C BUS serial line at 400 KBits/second
• Supplied with Demo Programs that shows and simplify the configuration. One of these can be executed on PC and allows the management of S-LOG connected through a free RS 232 serial line of computer.
• The interface can be configured even by hand by using any sistem with an asynchronous serial line and a Terminal Emulation program (i.e. a standard PC that executes Hyperterminal).

S-LOG _Configuration - Configuration Program for S-LOG - Ver. 4.5 ( 5 MB )

The S-LOG firmware can be comfortably configured through its rich list of commands, as described in the following table:

S-LOG Commands Summarazing Table
COMMAND	Communication from external system to S-LOG	Communication from S-LOG to external system
Clear Errors	Z	-
Acquire Status	z	general.status disk.status
Get Versions	V	hw.ver fw.ver
Set RTC	T dd/mm/yyyy hh:mm:ss	-
Get RTC	t	dd/mm/yyyy hh:mm:ss
Set Communication Line	C com.line	-
Get Communication Line	c	com.line
Set Baud Rate	R baud	-
Get Baud Rate	r	baud
Set Parity	P parity	-
Get Parity	p	parity
Set Stop Bit	S stop	-
Get Stop Bit	s	stop
Set Handshake	H handshake	-
Get Handshake	h	handshake
Set Slave Address	A sla.add	-
Get Slave Address	a	sla.add
Set Communication Timeout	O tout	-
Set Communication Timeout	o	tout
Set File	F pathname	-
Get File	f	pathname
Set Insert Action	I action	-
Get Insert Action	i	action
Set Group Time	G time	-
Get Group Time	g	time
Set File Label	L label	-
Get File Label	l	label
Set Group Prefix	B prefix	-
Get Group Prefix	b	prefix
Set Group Suffix	E suffix	-
Get Group Suffix	e	suffix
Set File Duration	D duration	-
Get File Duration	d	duration

SL_DATA (Technical Sheet) - GAB H844 and S-LOG create a Data Logger that acquires both Analog and Digital lines from the field and stores data and time on a Secure Digital card.

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Page up-dated at April 14, 2009

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