
Modbus Card Instruction Manual v1.1
©2011 Profire Energy Inc
Page i
Table of Contents
Description ............................................................................................................................................................................................................................................... 1
Quick Start Checklist ................................................................................................................................................................................................................................ 2
Specifications and System Requirements ................................................................................................................................................................................................ 3
PF2100 System Requirements ............................................................................................................................................................................................................. 3
Modbus Master Device Requirements ................................................................................................................................................................................................ 3
Modbus Card Specifications ................................................................................................................................................................................................................. 4
Included Components .............................................................................................................................................................................................................................. 5
DIP Switch Settings................................................................................................................................................................................................................................... 6
Installing the Card .................................................................................................................................................................................................................................... 7
Procedure When Another Expansion Card is Preinstalled ................................................................................................................................................................... 7
Procedure When No Expansion Card is Preinstalled ........................................................................................................................................................................... 8
System Considerations ............................................................................................................................................................................................................................. 9
Cable Type ............................................................................................................................................................................................................................................ 9
Duplex .................................................................................................................................................................................................................................................. 9
Wiring Topology ................................................................................................................................................................................................................................... 9
Termination ........................................................................................................................................................................................................................................ 10
Baud Rate ........................................................................................................................................................................................................................................... 10
Number of Devices ............................................................................................................................................................................................................................. 10
Turn-Around Delay ............................................................................................................................................................................................................................. 11
Signal Naming Conventions ............................................................................................................................................................................................................... 11
Common Ground ............................................................................................................................................................................................................................... 11
Electrical Wiring ..................................................................................................................................................................................................................................... 12
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