About MESR424 Modbus Gateways .........................................................................................................................6
MESR424 Modbus Gateway Model Numbering .......................................................................................................6
MESR 424 Features ...................................................................................................................................................7
MESR424 Modbus Gateway Enclosures and Mounting ............................................................................................8
LED Indicators ...........................................................................................................................................................9
E1/E2 Ethernet Link LED .......................................................................................................................................9
Serial Port LEDs ..................................................................................................................................................10
Serial Port Connectors .............................................................................................................................................12
Power Connector .....................................................................................................................................................13
Modbus Gateway Setup and Connections .................................................................................................. 15
Connecting the Power Supply .................................................................................................................................15
Connecting MESR424 Modbus Gateways to Modbus networks .............................................................................15
Connecting the MESR424 ...................................................................................................................................16
Connecting MESR424 Modbus Gateways to a Network .........................................................................................17
Upgrading the Firmware ............................................................................................................................. 44
Testing a Modbus Gateway Connection .................................................................................................................46
Monitor Function ....................................................................................................................................................48
Ethernet Master and Serial Slaves ..........................................................................................................................49
Serial & Ethernet Masters, Serial & Ethernet Slaves ...............................................................................................53
Serial Masters, IP Slaves .........................................................................................................................................55
Serial Masters, IP Slaves .........................................................................................................................................58
Serial Masters, IP Slaves .........................................................................................................................................59
7.
Modbus Help .............................................................................................................................................. 60
Hints and Tips..........................................................................................................................................................61
General Specifications ........................................................................................................................................65
Controls, Indicators and Connector Specifications ............................................................................................66
Serial Interface Specifications ............................................................................................................................67
DB9 Serial Port Pinouts ......................................................................................................................................70
Terminal Block Serial Port Pinouts .....................................................................................................................71
4
1._Introduction
1. Introduction
Thank you for purchasing an MESR424 Modbus Gateway. This product has been
manufactured to the highest standards of quality and performance to ensure your
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