A powerful data logging system is created when a PC running Laurel's new XLog datalogging software is connected to Laureate meters (DPMs, counters and timers) and transmitters. The logged data can be captured in the form of text files or directly by MS Excel. It can also be displayed by the PC in the form of up to 64 simulated panel meters in up to 4 groups (or screens) of up to 16 meters each. The on-screen position and appearance of individual meters is user selectable to achieve meaningful groupings. User settable parameters include the logging time interval in seconds and header data with or without time and date. Data files can be password protected.
The data connection between the PC and the instruments can be via Ethernet, USB, RS485 or RS232. With an Ethernet connection, remote data can be logged over the Internet.
- Ethernet connection. Up to 64 different instruments can be addressed and displayed. These can be any mix of meters with an LNET Ethernet interface board, meters with an LNET485 device server interface board (or Ethernet-to-RS45 interface board), DIN-rail mounted LTNET485 device servers, and instruments on an RS485 bus. Each device server can each support up to 31 RS485 enabled instruments on an RS485 bus. These can a mix of Laureate meters with an RS485 interace board and Laureate transmitters, which come standard with an RS485 port. Automatic discovery of all instruments on the LAN and on each RS485 bus is automatically achieved by Laurel's XLog Datalogging Software. With an Ethernet connection, remote instruments to be logged over the Internet.
Data logging with RS485 enabled Laurel instruments
- RS485 connection. Up to 31 actual instruments can be addressed, and up to 64 instruments can be displayed, including 33 virtual instruments. The latter can show calculated parameters which combine data from multiple actual instruments. For example, a virtual meter can display watts, obtained by multiplying the current reading from one meter by the voltage reading from another meter. Available operands are multiply, divide, add and subtract, with parentheses to allow complex expressions. The 31 actual instruments can be any mix of Laureate meters with an RS485 interace board board and Laureate transmitters, which come standard with an RS485 port.
- USB connection. Up to 31 actual instruments can be addressed, and up to 64 instruments can be displayed, including 33 virtual instruments. The actual instruments can be any mix of Laureate meters with a USB interace board or a USB-to-RS485 converter board. The latter can support up to 31 RS485 enabled instruments on an RS485 bus. These can a mix of Laureate meters with an RS485 interace board and Laureate transmitters, which come standard with an RS485 port. Automatic discovery of all instruments on the LAN and on each RS485 bus is automatically achieved by Laurel's XLog Datalogging Software. Laurel's CBL05 A-to-B cable can be used for point-to-point USB communications. If multiple instruments are to be addressed via USB, a USB hub is required (available in computer stores). The maximum length of a USB cable is 5 meters, so USB should only be used for short cable runs.
Data logging with a single Laurel instrument
(The instrument and PC must support the chosen interface)
- RS232 connection. RS232 is designed for a point-to-point connection and is suitable for datalogging with a single instrument connected to a PC COM port. The instrument can be a Laureate meter with an RS232 interface board, or a Laureate transmitter, which comes standard with an RS232 port.
- Laureate XLog Datalogging Software can be downloaded from this website at no charge by clicking on the self-extracting file xlog1_0_6.exe. To install, double-click on the file and follow the on-screen instructions. See XLog sample screens.
- Legacy Log Datalogging Software can also be downloaded at no chage by clicking on the self-extracting file log5_0_0.exe. This older software is only recommended for existing applications, since it has a different file format, can only be imported into Excel via ASCII files, and is not Ethernet enabled. See Log sample screens.