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Modbus Software Components for Developers

Selection Guide

  SMRL SMRN SMRX SMTN SMTX
Protocol Modbus/RTU Modbus/TCP
Component Type Win32 DLL .NET Windows Forms Control ActiveX .NET Windows Forms Control ActiveX
Uses MFC Libraries & COM      
VB 6.0    
VC++ 6.0    
Excel      
Visual Studio 2005-2013 and later (VB, C#, C++)      
Multiple Instances  
Thread Safe
Number of Comm. Ports 32 (1 per thread) 32 (1 per instance) 32 (1 per instance)    
Number of Connections       Unlimited (1 per instance) Unlimited (1 per instance)
Number of Properties 0 11 5 7 4
Number of Methods 35 24 13 19 15
Built-in Test Property Page  
Floating Point Support none built-in use STMR built-in use STMR
Access Raw Frames      
Serial I/O Primitives        
  SMRL SMRN SMRX SMTN SMTX
01-Read Coil Status
02-Read Input Status        
03-Read Holding Registers
04-Read Input Registers
05-Force Single Coil
06-Preset Single Register
07-Read Exception Status    
15-Force Multiple Coils
16-Preset Multiple Regs
17-Report Slave ID  
XX-Custom User Request      
  SMRL SMRN SMRX SMTN SMTX
Current Version-Date V1.3   8-30-2007 V2.0  2-12-2011 V1.2   9-23-2007 V1.1   2-10-2011 V1.2   1-5-2010
Revison History SMRL SMRN SMRX SMTN SMTX
Price ($US) OL / CD $90 / $110 $150 / $170 $130 / $150 $140 / $160 $90 / $110