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SeaMAX Function Timing Data

Each model of Sealevel I/O device has been tested to determine the minimum response time from a high level software point of view. The following SeaMAX functions were exectued and timed using a high-precision software timer using Visual C# .NET.

Note:
The system configuration used for testing is as follows:
  • System Hardware : Xeon 2.8 GHz w/ 1.0 GB RAM
  • Operating System : Windows XP Professional
  • Testbed Software : Visual Studio 2003, C# .NET, SeaMAX Version 3.0.3 Build 545
  • Test Hardware : All Sealevel I/O modules tested with factory default conditions

SeaI/O Modules

SeaI/O 410
SM_ReadDigitalInputs() - Single Input23.04 ms
SM_ReadDigitalInputs() - 16 Inputs24.10 ms
SM_ReadDigitalOutputs() - Single Output23.04 ms
SM_ReadDigitalOutputs() - 16 Outputs24.09 ms
SM_WriteDigitalOutputs() - Single Output20.99 ms
SM_WriteDigitalOutputs() - 16 Outputs24.17 ms
SeaI/O 420
SM_ReadDigitalInputs() - Single Input23.04 ms
SM_ReadDigitalInputs() - 16 Inputs24.11 ms
SM_ReadDigitalOutputs() - Single Output23.03 ms
SM_ReadDigitalOutputs() - 8 Outputs23.03 ms
SM_WriteDigitalOutputs() - Single Output20.98 ms
SM_WriteDigitalOutputs() - 8 Outputs23.13 ms
SeaI/O 430
SM_ReadDigitalInputs() - Single Input23.04 ms
SM_ReadDigitalInputs() - 32 Inputs24.10 ms
SeaI/O 440
SM_ReadDigitalOutputs() - Single Output23.05 ms
SM_ReadDigitalOutputs() - 32 Outputs26.22 ms
SM_WriteDigitalOutputs() - Single Output20.99 ms
SM_WriteDigitalOutputs() - 32 Outputs26.36 ms
SeaI/O 450
SM_ReadDigitalOutputs() - Single Output23.04 ms
SM_ReadDigitalOutputs() - 16 Outputs24.09 ms
SM_WriteDigitalOutputs() - Single Output20.99 ms
SM_WriteDigitalOutputs() - 16 Outputs24.18 ms
SeaI/O 462/463
SM_GetPIODirection()28.34 ms
SM_SetPIODirection()34.25 ms
SM_GetPIOPresets()41.05 ms
SM_SetPIOPresets()41.05 ms
SM_ReadPIO()32.61 ms
SM_WritePIO()37.94 ms
SeaI/O 470
SM_ReadDigitalInputs() - Single Input
23.04 ms
SM_ReadDigitalInputs() - 8 Inputs
23.03 ms
SM_ReadDigitalOutputs() - Single Output
23.03 ms
SM_ReadDigitalOutputs() - 8 Outputs
23.02 ms
SM_WriteDigitalOutputs() - Single Output
20.96 ms
SM_WriteDigitalOutputs() - 8 Outputs
23.13 ms
SM_ReadAnalogInputs() - Single Analog Input
24.16 ms
SM_ReadAnalogInputs() - 16 Analog Inputs
56.46 ms
SM_WriteAnalogOutputs() - Single Analog Output
20.96 ms
SM_WriteAnalogOutputs() - 2 Analog Outputs
26.27 ms
SM_GetADDAConfig()
21.99 ms
SM_SetADDAConfig()
36.17 ms
SM_GetADDAExtendedConfig()
220.50 ms
SeaI/O 520
SM_ReadDigitalInputs() - Single Input23.02 ms
SM_ReadDigitalInputs() - 8 Inputs23.02 ms
SM_ReadDigitalOutputs() - Single Output23.03 ms
SM_ReadDigitalOutputs() - 8 Outputs23.02 ms
SM_WriteDigitalOutputs() - Single Output20.96 ms
SM_WriteDigitalOutputs() - 8 Outputs23.13 ms

Note:
The function timing data listed above represent S-series (232) SeaI/O modules, operating at 9600 bps with no parity.

SeaDAC Modules

SeaDAC 8221
SM_ReadDigitalInputs() - Single Input
31.88 ms
SM_ReadDigitalInputs() - 16 Inputs
31.95 ms
SM_ReadDigitalOutputs() - Single Output
31.98 ms
SM_ReadDigitalOutputs() - 16 Outputs
31.99 ms
SM_WriteDigitalOutputs() - Single Output
31.98 ms
SM_WriteDigitalOutputs() - 16 Outputs
31.99 ms
SeaDAC 8222
SM_ReadDigitalInputs() - Single Input
31.88 ms
SM_ReadDigitalInputs() - 16 Inputs
31.95 ms
SM_ReadDigitalOutputs() - Single Output
31.94 ms
SM_ReadDigitalOutputs() - 8 Outputs
31.94 ms
SM_WriteDigitalOutputs() - Single Output
31.92 ms
SM_WriteDigitalOutputs() - 8 Outputs
31.92 ms
SeaDAC 8223
SM_ReadDigitalInputs() - Single Input
31.90 ms
SM_ReadDigitalInputs() - 32 Inputs
31.96 ms
SeaDAC 8224
SM_ReadDigitalOutputs() - Single Output
31.89 ms
SM_ReadDigitalOutputs() - 32 Outputs
31.94 ms
SM_WriteDigitalOutputs() - Single Output
31.95 ms
SM_WriteDigitalOutputs() - 32 Outputs
32.08 ms
SeaDAC 8225
SM_ReadDigitalOutputs() - Single Output
31.88 ms
SM_ReadDigitalOutputs() - 16 Outputs
31.96 ms
SM_WriteDigitalOutputs() - Single Output
31.94 ms
SM_WriteDigitalOutputs() - 16 Outputs
31.94 ms
SeaDAC 8227
SM_ReadDigitalInputs() - Single Input
31.95 ms
SM_ReadDigitalInputs() - 8 Inputs
31.95 ms
SM_ReadDigitalOutputs() - Single Output
31.97 ms
SM_ReadDigitalOutputs() - 8 Outputs
31.98 ms
SM_WriteDigitalOutputs() - Single Output
31.97 ms
SM_WriteDigitalOutputs() - 8 Outputs
31.98 ms
SM_ReadAnalogInputs() - Single Analog Input
31.97 ms
SM_ReadAnalogInputs() - 16 Analog Inputs
63.95 ms
SM_WriteAnalogOutputs() - Single Analog Output
31.98 ms
SM_WriteAnalogOutputs() - 2 Analog Outputs
31.95 ms
SM_GetADDAConfig()
31.98 ms
SM_SetADDAConfig()
47.97 ms
SM_GetADDAExtendedConfig()
303.88 ms
SeaDAC 8232
SM_ReadDigitalInputs() - Single Input
31.87 ms
SM_ReadDigitalInputs() - 8 Inputs
31.94 ms
SM_ReadDigitalOutputs() - Single Output
31.98 ms
SM_ReadDigitalOutputs() - 8 Outputs
31.97 ms
SM_WriteDigitalOutputs() - Single Output
31.98 ms
SM_WriteDigitalOutputs() - 8 Outputs
31.97 ms

Note:
The function timing data listed above represent factory default SeaDAC modules, operating at 9600 bps with no parity.

SeaDAC Lite Modules

SeaDAC Lite 8111
SM_ReadDigitalInputs() - Single Input
3.90 ms
SM_ReadDigitalInputs() - 4 Inputs
3.93 ms
SM_ReadDigitalOutputs() - Single Output
3.90 ms
SM_ReadDigitalOutputs() - 4 Outputs
3.93 ms
SM_WriteDigitalOutputs() - Single Output
5.69 ms
SM_WriteDigitalOutputs() - 4 Outputs
5.70 ms
SeaDAC Lite 8112
SM_ReadDigitalInputs() - Single Input
3.92 ms
SM_ReadDigitalInputs() - 4 Inputs
3.90 ms
SM_ReadDigitalOutputs() - Single Output
3.91 ms
SM_ReadDigitalOutputs() - 4 Outputs
3.93 ms
SM_WriteDigitalOutputs() - Single Output
5.72 ms
SM_WriteDigitalOutputs() - 4 Outputs
5.70 ms
SeaDAC Lite 8113
SM_ReadDigitalInputs() - Single Input
3.90 ms
SM_ReadDigitalInputs() - 4 Inputs
3.93 ms
SeaDAC Lite 8114
SM_ReadDigitalOutputs() - Single Output
3.90 ms
SM_ReadDigitalOutputs() - 4 Outputs
3.90 ms
SM_WriteDigitalOutputs() - Single Output
5.68 ms
SM_WriteDigitalOutputs() - 4 Outputs
5.66 ms
SeaDAC Lite 8115
SM_ReadDigitalOutputs() - Single Output
4.05 ms
SM_ReadDigitalOutputs() - 4 Outputs
3.86 ms
SM_WriteDigitalOutputs() - Single Output
4.07 ms
SM_WriteDigitalOutputs() - 4 Outputs
3.62 ms
SeaDAC Lite 8126
SM_GetPIODirection()
2.00 ms
SM_SetPIODirection()
1.99 ms
SM_ReadPIO()
2.05 ms
SM_WritePIO()
2.00 ms

Note:
All timing data above represents SeaDAC Lite modules with factory default settings.
 
 
Generated on 15 Dec 2008.