SCANTRIC LOGO SCANTRIC LW
SCANTRIC LW Programmable Logic Controller
It is intended to perform a wide range of different tasks, such as analog measurement, remote control, switch closure detection, etc. However, in addition of these functions, its primary purpose is to communicate a local LonWorks technology based network with a MODBUS control center.
SCANTRIC LW PICTURE By example, consider the following case: There is a conventional MODBUS protocol based SCADA network. It is required to install a new remote station. For convenience It is decided to take advantage of LonWorks technology. A SCANTRIC LW module can play the role of a gateway to make possible communication among the station's nodes and the Control Center. Simultaneously the same module can monitor local variables and take over of remote command operations.
MODBUS communication is accomplished by means of the module's serial port.
The SCANTRIC-LW module also has a LonWorks FT-10 port to perform communication with other LonWorks nodes.
SCANTRIC LW can be also polled by means of SMS (Short Message Service). This feature allows to turn a Cell Phone into a Control Center. For a small SCADA system this may be a convenient way to reduce equipment complexity and cost.
Seven analog inputs are provided, They are voltage/current jumper selectable, 10 bit precision. SCANTRIC-LW has also 8 dry contact inputs and 8 open collector outputs.

BLOCK DIAGRAM Applications
Telemetry and SCADA Systems
  • Electric Utilities
  • Water Utilities
  • Factory Automation


Terminal Description
No. Function No. Function
1 Digital Input 1 24 Digital Output 8
2 Digital Input 2 25 Digital Output GND
3 Digital Input 3 26 Digital Output GND
4 Digital Input 4 27 Communication Network
5 Digital Input 5 28 Communication Network
6 Digital Input 6 29 Power Supply -
7 Digital Input 7 30 Power Supply +
8 Digital Input 8 43 Analog Input GND
9 Digital Input GND 44 Analog Input GND
10 Digital Input GND 45 Analog Input 7
17 Digital Output 1 46 Analog Input 6
18 Digital Output 2 48 Analog Input 5
19 Digital Output 3 49 Analog Input 4
20 Digital Output 4 50 Analog Input 3
21 Digital Output 5 51 Analog Input 2
22 Digital Output 6 52 Analog Input 1
23 Digital Output 7    
Technical Specifications
Power Supply 8 - 25 Vdc
Consumption < 100 mA
Number of analog inputs 7
Analog input range 0-5 Vdc (voltage input)
0-20 mA (current input)
Current input resistance 250 ohm
Overall analog accuracy 0.2% of full scale
Analog-digital conversion precision 10 bit
Number of dry contact inputs 8
Number of open collector outputs 8
Max output current sink 400 mA
Max output breakdown voltage 50 Vdc
Serial port RS-232 asynchronous, 8 data bit, 1 stop bit, none parity
Serial Port Communication Protocols MODBUS RTU / Cellular SMS
Serial Port Baud Rates 1200, 2400, 4800, 9600, 19200, 38400 bps
Network Communication Protocol EIA - 709.1
Operation Temperature -10º C to 55º C
Dimensions Width x Height x Depth
155 x 85 x 57 (mm)
Mounting DIN rail
Visual Indications

www.atechna.com