FAQ#080 – What dimensions has the .CSV file in columns that contains the measures acquired with OMNIAlog and miniOMNIAlog?
The dimensions of the measures file “in columns” downloaded with OMNIAlog and miniOMNIAlog vary according to the number of sensors acquired and the stored cycles of acquisition. The higher is the number of sensors acquired and the number of cycles of acquisition stored, bigger is the dimension of the file. It could be used the […]
FAQ#078 – Is it possible to send SMS in case of alarms with OMNIAlog?
Yes, if OMNIAlog is equipped with a 2G (GSM/GPRS) modem, connected through a serial cable to its RS232 port. OMNIAlog allows to set up alarm thresholds and the notification of these alarms could occur: – by SMS; – by email; – by FTP; – increasing the acquisition frequency; – managing a digital output (for example […]
FAQ#076 – Why it is necessary add a termination resistor to the last digitized sensor of each RS-485 chain?
All SISGEO digitized instruments (IPIs, Tiltmeters, H-Level…) use the RS-485 serial communication protocol The RS485 protocol contemplate a termination resistor. The recommended chain connection is point-to-point (multidropped) nodes as a bus mode (line). Star, ring or multiply network connection are not recommended. SISGEO dataloggers has already a termination resistor assembled (typically 120Ω). On the opposite […]
FAQ#074 – Which kind of datalogger is necessary to read a SISGEO digital sensors?
The sensors are read connecting the end cable to a Modbus Master unit (i.e. OMNIAlog or miniOMNIAlog) with RS-485 interface (DCE, Half duplex, no Echo) able to manage communication with SISGEO Modbus RTU communication protocol. SISGEO’s communication protocol is available for the release upon request. The power [W] of power supply must be chosen according […]
FAQ#073 – Which is the maximum number of digitized sensors (RS-485, Modbus), the maximum number of chains and the maximum length of cable in a RS-485 network?
Last update: October 2021 All the SISGEO digitized sensors utilize a RS485 interface with Modbus protocol. 1.The maximum number of digitized sensors in a RS-485 network are 247 (theoretical) 2.The maximum number of digitized sensors chains that is possible to connect to Modbus master unit (as OMNIAlog or miniOMNIAlog) are 4. 3. About the maximum […]
FAQ#066 – Why opening the file of log .CSV of OMNIAlog/miniOMNIAlog in French with Microsoft Office Excel some “strange” characters are visualized instead of some letters?
The cause of this is problem is that Excel opens the CSV files with an incorrect encoding. In the CSV files in French, there are some particular characters (example: “é”, “à”) that, to be correctly visualized, need the encoding UNICODE UTF-8. This encoding is not that of default of Excel, so the file is codified […]
FAQ#065 – What kind of cable I have to use if I want to connect OMNIAlog to a PC using a LAN cable?
For a direct connection between PC and OMNIALOG, the right cable to use is a CROSSED cable. However, it could happen that also using a STRAIGHT LAN cable, it is possible to establish the connection with OMNIAlog. This occurs because from 2011 it has been realized a function called Auto-MDIX, that is available on some […]
FAQ#064 – If I’m using the 3G/2G modem connected on port RS232 of OMNIAlog, can I simultaneously use the LAN connection, too?
No, when you use the modem connected on port COM RS232, OMNIAlog is configured (through its webserver) to transmit the traffic on serial port. This could cause connection problems if you connect the PC on the LAN port of OMNIAlog. To use the communication on LAN port, it is necessary to disconnect the RS232 cable […]
FAQ#063 – Is it possible to connect to OMNIAlog and download data through a 2G (GSM/GPRS) or 3G (HSPA,UMTS, EDGE, GPRS,GSM) modem connected on port RS-232?
Yes. It is possible to connect to OMNIAlog and download data also by means of a Dial-up connection (with protocol PPP). The connection is established using a modem on the normal low frequency voice telephony. The connection is established through the composition of a normal telephonic number, using opportune programs called “dialer”. The maximum speed […]
FAQ#062 – Which ports use OMNIAlog services?
It is possible to have access to OMNIAlog mini webservers on board using any internet browser. OMNIAlog could be configured to send data / alarms through e-mail and on FTP. In addition, it has a FTP server on board and a command line mode that uses the TELNET protocol. To use these services, OMNIAlog utilizes […]
FAQ#060 – Which characters is it possible to use in the editable fields of OMNIAlog webpages?
The characters supported by miniOMNIAlog webpages and by the export files are those of the standard ASCII charts (not extended). In addition to all the alphabet letters and numbers, the characters supported are: You can find an example of an ASCII chart at the following link: http://www.asciitable.com/ NOTE: The maximum number of characters for IDENTIFICATION […]
FAQ#057 – OMNIAlog powered by internal batteries: what to expect?
With the internal batteries power mode, OMNIAlog is automatically configured to work with reduced speed (20MHz) and the network adapter card is forcedly shut down to minimize power consumption.Normal working expects only the data download through USB flash drive, so it’s not necessary to turn on the network adapter card.OMNIAlog configuration through web pages should […]