
Modbus Card Instruction Manual v1.1
©2011 Profire Energy Inc
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The Pluggable Header ........................................................................................................................................................................................................................ 12
Connecting the Communication Wires .............................................................................................................................................................................................. 12
Connecting the “GND” Pin ................................................................................................................................................................................................................. 13
Configuring the Menu Settings .............................................................................................................................................................................................................. 14
Testing the Modbus Card ....................................................................................................................................................................................................................... 15
Using a Modbus Master ..................................................................................................................................................................................................................... 15
Using the LEDs .................................................................................................................................................................................................................................... 15
Using a PC Software Based Modbus Test Program ............................................................................................................................................................................ 15
Using a Network Analyzer, Logic Analyzer, or Oscilloscope .............................................................................................................................................................. 15
Appendix A – Modbus Background Info ................................................................................................................................................................................................ 16
Appendix B – Using the PF2100 Menu System ...................................................................................................................................................................................... 17
Menu Structure .................................................................................................................................................................................................................................. 17
Navigating Menus .............................................................................................................................................................................................................................. 17
Viewing Menu Items .......................................................................................................................................................................................................................... 17
System Password ............................................................................................................................................................................................................................... 17
Editing a Menu Item Setting .............................................................................................................................................................................................................. 17
Saving an Edited Menu Item Setting .................................................................................................................................................................................................. 17
Reverting an Edited Menu Item Setting ............................................................................................................................................................................................. 18
Menu Item Setting Storage ................................................................................................................................................................................................................ 18
Setting the System Voltage ................................................................................................................................................................................................................ 18
Resetting the System to Factory Defaults .......................................................................................................................................................................................... 18
Appendix C – Modbus Register Numbers .............................................................................................................................................................................................. 19
Discrete Table .................................................................................................................................................................................................................................... 19
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