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  3. SWG100 Biogas

MRU Instruments SWG100 Biogas User manual

  • Hello! I've reviewed the Modbus Connection Guide for the MRU SWG 100 gas analyzer. This document explains how to set up the Modbus connection for the device, including software and hardware configurations. I understand the device uses RS485 and MRU4win software. I am ready to answer your questions about the SWG 100.
  • What is the recommended baud rate for Modbus connection?
    What are the allowed slave address values?
    What software is used to configure the Modbus connection?
    Which connection is used for RS485?
SWG 100
MODBUS CONNECTION
MRU Instruments, Inc. / 18838 S Memorial Drive – Suite 103 / Humble, Texas 77338 / Tel.: 832-230-0155
MODBUS CONNECTION
SWG 100
MODBUS CONNECTION
MRU Instruments, Inc. / 18838 S Memorial Drive – Suite 103 / Humble, Texas 77338 / Tel.: 832-230-0155
Connecting your SWG 100 using Modbus
Press F3
(Modbus)
Enter the settings as shown
Boud rate: 19200 is recommended
Slave address: between 1 and 238
Stop bits: 1
Parity: even
Data bits: 8
Press F2 (return)
And save configuration!!
Using MRU4win Software
(free light version on https://www.mru.eu/download/oeffentliche-downloads/)
Start the MRU4win
Click on Settings
SWG 100
MODBUS CONNECTION
MRU Instruments, Inc. / 18838 S Memorial Drive – Suite 103 / Humble, Texas 77338 / Tel.: 832-230-0155
Activate Modbus
Modbus is activated
SWG 100
MODBUS CONNECTION
MRU Instruments, Inc. / 18838 S Memorial Drive – Suite 103 / Humble, Texas 77338 / Tel.: 832-230-0155
Click on LIVE measurement then click the Create Modbus Device button
ENTER: Serial
Select COM PORT
Enter Identical values
for SWG and
MRU4win
NAME: select your analyzer
Then press OK
SWG 100
MODBUS CONNECTION
MRU Instruments, Inc. / 18838 S Memorial Drive – Suite 103 / Humble, Texas 77338 / Tel.: 832-230-0155
Press the connect symbol
The analyzer is now connected –
press the start logging button
SWG 100
MODBUS CONNECTION
MRU Instruments, Inc. / 18838 S Memorial Drive – Suite 103 / Humble, Texas 77338 / Tel.: 832-230-0155
HARDWARE
Connection from 2 wire RS485 to 4 wire RS485
SWG 100 Main Board RS 485 port
DTECH
USB to RS422
RS485
Serial Port
Converter
Adapter Cable
with FTDI Chip
Supports
Windows 10, 8,
7, XP and Mac
( 1.5 Feet)
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