I/O Response Performance Measurements by Device (Analog, Digital, Counter)

This data is a measurement of the average execution time of basic I/O functions provided by Contec’s Windows and Linux drivers using representative products selected from the PC-HELPER series PC measurement control devices that use various bus types. The average execution time varies depending on the bus used with the device and the product series and is intended as a guide for selecting products. In addition, measurement values are based on actual measurements performed in the operating environment prepared by Contec. Average execution times will vary depending on the hardware and software configuration.*

*

Functions provided by certain drivers can be measured using the provided utility.
API-AIO(WDM) Function execution time measurement program, API-DIO(WDM) Execution time measurement, API-CNT(WDM) Diagnostic program

Measurement condition

PC	Model	VPC-3100
	CPU	Intel Core i5-8500 (3.00GHz)
	RAM	16GB
OS	Windows	Windows10 21H1 64bit
OS	Linux	Ubuntu 20.04.2 LTS 5.8.0-43-generic (x86_64)
Measurement software development language	Windows	Microsoft Visual C++(MFC)
Measurement software development language	Linux	gcc
Measurement method	As function execution times vary based on OS task scheduling, the average execution time per function is calculated from 10,000 executed functions.

Industrial PC VPC-3100

Windows

Analog I/O【Driver：API-AIO(WDM) Ver.7.20】

Bus		AioSingleAi	AioSingleAo	AioSingleAiSR^*1
USB	AIO-163202FX-USB	10.1 [msec]	6.9 [msec]	-
	AIO-121602LN-USB	8.2 [msec]	6.2 [msec]	-
	AIO-160802GY-USB	8.3 [msec]	6.2 [msec]	-
	AI-1608VIN-USB	166[µsec]	-	-
	AO-1604VIN-USB	-	146.7[µsec]	-
	CC-USB271-CPSN4 + CPSN-AI-1208LI	250.3 [µsec]	-	-
	CC-USB271-CPSN4 + CPSN-AO-1602LC	-	272.0 [µsec]	-
PCI Express	AI-1204Z-PE	4.6 [µsec]	-	-
	AIO-163202F-PE	162.7 [µsec]	122.9 [µsec]	-
	AIO-160802L-LPE	113.4 [µsec]	95.5 [µsec]	-
Ethernet	CPSN-MCB271-S1-041 + CPSN-AI-1208LI	5.4 [msec]	-	-
Ethernet	CPSN-MCB271-S1-041 + CPSN-AO-1602LC	-	5.1 [msec]	-
Wireless I/O	GW1-ETH-WQ + AI-1004LY-WQ	2.0　[msec]	-	111.8 [msec]

Digital I/O【Driver：API-DIO(WDM) Ver.9.20】

Bus		DioInpByte	DioOutByte^*2	DioInpByteSR^*1
USB	DIO-1616LN-USB	125.0 [µsec]	125.0 [µsec]	-
	DIO-0808LY-USB	165.7 [µsec]	165.6 [µsec]	-
	CC-USB271-CPSN4 + CPSN-DI-08L	146.9 [µsec]	-	-
	CC-USB271-CPSN4 + CPSN-DO-08L	-	145.4 [µsec]	-
PCI Express	DIO-1616L-PE	3.1 [µsec]	3.1 [µsec]	-
Ethernet	DIO-1616LN-ETH	1.5 [msec]	2.5 [msec]	-
	CPSN-MCB271-S1-041 + CPSN-DI-08L	3.6 [msec]	-	-
	CPSN-MCB271-S1-041 + CPSN-DO-08L	-	3.8 [msec]	-
Wireless I/O	GW1-ETH-WQ + DIO-0404LY-WQ	2.3　[msec]	250.6 [msec]	120.9 [msec]

Counter 【Driver：API-CNT(WDM) Ver.6.20】

Bus		CntReadCount
USB	CNT-3204IN-USB	278.1 [µsec]
USB	CC-USB271-CPSN4 + CPSN-CNT-3201I	653.1 [µsec]
PCI Express	CNT-3208M-PE	4.7 [µsec]
Ethernet	CPSN-MCB271-S1-041 + CPSN-CNT-3201I	5.1 [msec]

Linux

Analog I/O【Driver：API-AIO(LNX) Ver.4.70】

Bus		AioSingleAi	AioSingleAo	AioSingleAiSR^*1
USB	AIO-163202FX-USB	6.0 [msec]	4.4 [msec]	-
	AIO-121602LN-USB	5.0 [msec]	3.8 [msec]	-
	AIO-160802GY-USB	5.5 [msec]	4.6 [msec]	-
	AI-1608VIN-USB	129.0 [µsec]	-	-
	AO-1604VIN-USB	-	139.0 [µsec]	-
PCI Express	AI-1204Z-PE	26.8 [µsec]	-	-
	AIO-163202F-PE	198 [µsec]	166[µsec]	-
	AIO-160802L-LPE	136[µsec]	120[µsec]	-
Ethernet	CPSN-MCB271-S1-041 + CPSN-AI-1208LI	4.0[msec]	-	-
Ethernet	CPSN-MCB271-S1-041 + CPSN-AO-1602LC	-	4.6 [msec]	-
Wireless I/O	GW1-ETH-WQ + AI-1004LY-WQ	2.1　[msec]	-	111.5 [msec]

Digital I/O 【Driver：API-DIO(LNX) Ver.7.80】

Bus		DioInpByte	DioOutByte^*2	DioInpByteSR^*1
USB	DIO-1616LN-USB	97.2 [µsec]	115.8 [µsec]	-
USB	DIO-0808LY-USB	151.9 [µsec]	127.6 [µsec]	-
PCI Express	DIO-1616L-PE	3.5 [µsec]	3.5 [µsec]	-
Ethernet	DIO-1616LN-ETH	1.5 [msec]	2.4 [msec]	-
	CPSN-MCB271-S1-041 + CPSN-DI-08L	3.9 [msec]	-	-
	CPSN-MCB271-S1-041 + CPSN-DO-08L	-	4.1 [msec]	-
Wirless I/O	GW1-ETH-WQ + DIO-0404LY-WQ	1.7　[msec]	248.3 [msec]	119.5 [msec]

Counter 【Driver：API-CNT(LNX) Ver.3.20】

Bus	Device		CntReadCount
USB		CNT-3204IN-USB	215.2 [µsec]
Ethernet		CPSN-MCB271-S1-041 + CPSN-CNT-3201I	4.0 [msec]

*1

Measurements are performed in a mode that refers to slave unit input data.
*2

Output function processing is completed when data to be output is set to the device. As such, for devices with slow response times that use opto-coupler isolation, function processing will finish before the device output status changes. Repeatedly calling functions will overwrite the output status, which could put the external signal in an unintended state.