iLOGPlus RTU/Data Loggers are internet enabled devices, specially suited for remote data acquisition, distributed telemetry and remote control. The units act as master devices and send alerts and data files on their own via FTP, email and SMS. All types carry a built-in TCP/IP webserver with live webpages that can be accessed by any Internet browser application. They accept and serve TCP and SMS commands for interactive operation in a SCADA system.
Analog inputs and digital I/O are expandable by means of I/O expansion modules, plugging on a serial I/O expansion bus.


The device carries a built-in GSM/GPRS modem and can automatically connect via a mobile telephony network to an ISP provider, to transmit its data via email or ftp and alerts via email or SMS. The unit controls the internal modem power supply for power saving purposes in applications with battery operation.


The device carries a built-in Ethernet/LAN adapter and can be directly hooked on to a local network. It can connects via gateway or a GSM network router to the Internet. SMS alerting is supported with an external GSM modem attached on the local serial port.


Advanced features

The following characteristics are common to the 2 device types distinguished by the physical communication medium:

  • Dual ARM7 processor architecture.
  • 4 high resolution analog inputs (AI1-AI4). Analog inputs can be expanded to 16 by means of 3 GE-AI-4 modular expansion modules.
  • 2 constant current sources for PT-100 transducer excitation.
  • 4 digital inputs for state recording and alarming. Two of them have pulse counting capability up to 3 KHz supporting sensors with pulse output (power meters, flow meters, etc.). Digital inputs can be expanded to 16 by means of 3 GE-DIO-42 modular expansion modules.
  • 2 relay outputs that are user (for remote control) or event triggered. Digital outputs can be expanded to 8 by means of 3 GE-DIO-42 modular expansion modules.
  • External DIN rail adaptor with screw terminals for convenient wiring (SCT-04E).
  • Power fail safe memory for up to 40,000 channel records.
  • Alarm recording and annunciation via email and SMS.
  • Scheduled data transmission via email file attachment and FTP.
  • TCP and SMS ASCII commands for parameter setting and remote control.
  • Internal web server publishing a two pages HTML site on the internet, allowing real time monitoring of the measurements and operating states and allowing limited parameter changing.
  • Serial communication RS232 port supporting local communication and convenient parameter setting and firmware upgrading using a PC and the powerful iLOGPlus Transporter utility.

Ordering Codes

Code Description
iLOGPlus GSM GSM / GPRS RTU/Datalogger
iLOGPlus LAN Ethernet LAN RTU/Datalogger
SCT-04E-12 DIN rail adaptor, 12VDC
SCT-04E-24 DIN rail adaptor, 24VDC


Power supply
Supply voltage 12VDC±10% (combined with SCT-04E-12 adaptor), 24VDC±10% (combined with SCT-04E-24 adaptor)
Supply current iLOG LAN: 110mA (150mA max), iLOG GSM: average 50mA, 2A peak
Processing units
Main processor ARM 7 processor
Communication processor ARM 7 processor
Data Log memory 1 MB Flash
Event Log memory 1 MB Flash
Analog inputs 4, differential, 12 bit resolution, variable gain (2-400), expandable to 16 by means of 3 GE-AI-4 expansion modules
Excitation 2, constant current source, 1.24mA
Digital inputs 4, pull, 0-30VDC, expandable to 16 by means of 3 GE-DIO-42 expansion modules
Pulse counter inputs 4, 2KHz, common with DI 1-4, expandable to 16 by means of 3 GE-DIO-42 expansion modules
Sensor excitation 2 current sources for PT-100 sensors
iLOGPlus GSM Quad Band GSM/GPRS MODEM(850/900/1800/1900MHz)
RF connector SMA Jack
iLOGPlus LAN Ethernet LAN, 100/10MBit
Protocols General Internet Protocols (IP, TCP, DNS, POP3,
HTTP, FTP, Web server)
Serial interface RS232C, up to 921 kBit/s
Display LCD, 4x20 characters, backlight
Keyboard membrane, 15 buttons
Dimensions 154 x 84 x 38 mm
Temperature -10°...+55°C, operating
Protection IP40
Weight 0.3 kg
Name Description Download
iLOG-GSM Firmware V:2.3

iLOG-GSM Firmware V:2.3
iLOG-LAN Firmware V:2.3

iLOG-LAN Firmware V:2.3
iLOGPlus, Version Control 4.3

Version Control 4.3

iLOGPlus, Version Control History 5.5

Version Control History 5.5

iLOGPlus-GSM Firmware V:4.3

iLOGPlus-GSM Firmware V:4.3
iLOGPlus-GSM Firmware V:5.5

iLOGPlus-GSM Firmware V:5.5
iLOGPlus-LAN Firmware V:4.3

iLOGPlus-LAN Firmware V:4.3
iLOGPlus-LAN Firmware V:5.5

iLOGPlus-LAN Firmware V:5.5
Product Brochures
Document File
iLOGPlus Technical Brochure iLOGPLUS.pdf
WAT, Cloud Server Brochure V:1.1 WaT Datasheet.pdf
iLOG Key Features ILOGplus_Family key features.pdf
Technical Documents
Document File
iLOGPlus User Guide iLOGPlus Manual.pdf
Exploiting iLOG-LAN Exploiting iLOG-LAN.pdf
iLOG-GSM Tutorial iLog_GSM_EDM_Tutorial.pdf
iLOG-LAN Tutorial iLog_LAN_Tutorial_V10.pdf
iLOG-GSM Internet Connectivity iLog_GSM_EDM_connectivity.pdf
iLOG-GSM: Verifying Network connection iLOG-GSM-NetConnect.pdf
iLog Power supply requirements iLog Power Consumption.pdf
iLOG-xxx analog inputs: Avoiding ground loop problems AI_Avoiding_Ground_Loops.pdf
iLOG, Conformity to EMC regulations iLOG_EMC_DOC.pdf
iLOG, Conformity to HACCP regulations iLOG_HACCP_DOC.pdf
Exploiting iLOG-GSM Exploiting iLOG-GSM.pdf
iLOG - TCP/IP Socket & SMS Commands iLOG_TCP & SMS Commands.pdf
Application Documents
Document File
Freezer datalogging Freezer datalogging.pdf
iLOGPlus Case Studies iLOG_Case_Studies.pdf
iLOGPlus, Using the pulse inputs for Power & Energy recording PulseIN.pdf