SM1, RS-485 MODBUS Module for 2 Analogue Inputs

SM1, RS-485 MODBUS Module for 2 Analogue Inputs

The SM1   2-channel module of analogue inputs from LUMEL is destined to convert standard signals, resistance or temperature signals into numerical data, accessible via the RS-485 or RS-232 port by means of the MODBUS protocol. 
The measurements are carried out independently in two channels. The RS-485 and RS232 output ports are galvanically isolated from the input signals and the supply voltage. The module programming is possible by means of the RS-485 or RS-232 port via the free eCon software.

An interface cable for the connection of the module with a computer (RS-232 with D9 plug) is supplied with the SM1 module.

The SM1 module realises the following functions:

• Mathematical operations on channels and between measuring channels
• Conversion of measured or calculated quantities based on the individual linear characteristic
• Storage of minimum and maximum values for both channels
• Programming of the measurement averaging time
• Servicing of RS-485 and RS232 interfaces in MODBUS protocol, both in ASCII and RTU mode

Technical data:
Inputs (please select when ordering!):
    * 2 voltage inputs: 0-10V
    * 2 current inputs: 0/4-20mA
    * 1 voltage input 0-10V and 1 current input 0/4-20mA
    * 2 Pt100 temperature sensor and resistance input <400 Ohm
Output: RS-485 port for MODBUS ASCII/RTU
Supply voltage: 85-253VAC/DC or 20-50VAC/DC (please select when ordering!)