Table of Contents
4
Using MESR424 Modbus Gateways in Direct IP Mode ...................................................................................... 42
Initiating a Hardware Reset on the Modbus Gateway ............................................................................................ 43
Reloading Factory Defaults ..................................................................................................................................... 43
4.
Upgrading the Firmware ............................................................................................................................. 44
Downloading Firmware Files ................................................................................................................................... 45
Uploading the Firmware to the Modbus Gateway ................................................................................................. 45
5.
Diagnostics ................................................................................................................................................. 46
Testing a Modbus Gateway Connection ................................................................................................................. 46
Monitor Function .................................................................................................................................................... 48
6.
Application Examples ................................................................................................................................. 49
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
Modbus ASCII/RTU Basics ....................................................................................................................................... 60
Hints and Tips.......................................................................................................................................................... 61
8.
Appendices ................................................................................................................................................. 62
Appendix A: Default Gateway Settings ................................................................................................................... 63
Appendix B: Product Specifications ......................................................................................................................... 64
General Specifications ........................................................................................................................................ 65
Controls, Indicators and Connector Specifications ............................................................................................ 66
Serial Interface Specifications ............................................................................................................................ 67
Network Specifications ...................................................................................................................................... 68
Appendix C: Dimensional Diagrams ........................................................................................................................ 69
Appendix D: Connector Pinouts ............................................................................................................................... 70
DB9 Serial Port Pinouts ...................................................................................................................................... 70
Terminal Block Serial Port Pinouts ..................................................................................................................... 71
