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 2005-2017 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