In device buffer mode, API-AIO(WDM) driver secures a memory area for 256K data in the memory of the PC so that even a device with a small buffer memory can achieve stable sampling as much as possible. This memory area is called "software memory".
In the case of a device using a software memory, the driver automatically
performs data transfer between the buffer memory and the software memory,
and the application accesses the software memory from the application.
With this mechanism, applications can handle processing with a margin in
timing or data volume.
Example : When sampling for a long time under the following conditions on a device with a buffer memory of 1K (1024) data ・Number of Channels
: 1Ch
If this device does not use software memory (*1) Sampling
with this setting, approximately 1 second (1024msec) after the
start, Therefore,
in order to perform long time sampling with this setting,
If this device uses software memory Since
the software memory can store data for 256K (262,144) data, In
addition, if the amount of data collected by this sampling is
less than 256K,
(*1) Actually, the device with 1K buffer
memory always uses the software memory, (*2) During high-speed sampling, data
transfer to the software memory may not be in time |
Please refer to the following for whether or not the software memory of each device is used and the memory size that can be used.
Devices | Memory Size | Use software memory |
■ Analog Z-Series Boards AI-1204Z-PE AI-1204Z-PCI |
(Depends on the setting of AioSetAiMemorySize function) (Depends on the setting of AioSetAiMemorySize function) |
No No |
■
Analog G-Series Boards |
|
No |
■ Analog F-Series Boards AIO-163202F-PE ADA16-32/2(PCI)F |
64K (64*1024) 64K (64*1024) |
No No |
■ Analog E-Series Boards AIO-121601E3-PE AIO-121601UE3-PE AIO-161601E3-PE AIO-161601UE3-PE AD12-16(PCI)EV AD12-16U(PCI)EV AD16-16(PCI)EV AD16-16U(PCI)EV AI-1216I2-PCI |
16M (16*1024*1024) 16M (16*1024*1024) 16M (16*1024*1024) 16M (16*1024*1024) 16M (16*1024*1024) 16M (16*1024*1024) 16M (16*1024*1024) 16M (16*1024*1024) 256K (256*1024) |
No No No No No No No No No |
■ Analog L-Series Boards AIO-160802LI-PE AIO-160802L-LPE AI-1616LI-PE AI-1616L-LPE AI-1664LA-LPE ADAI16-8/2(LPCI)L ADA16-8/2(LPCI)L ADI16-16(LPCI)L AD16-16(LPCI)L AD16-64(LPCI)LA |
256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) |
Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) |
■ Other Analog Input/Output Boards AI-1604CI2-PCI AD12-16(PCI) AD12-64(PCI) |
256K (256*1024) 256K (256*1024) 256K (256*1024) |
Yes (No Buffer Memory) Yes (No Buffer Memory) Yes (No Buffer Memory) |
Devices | Memory Size | Use software memory |
■ Analog USB Devices AIO-163202FX-USB AIO-160802GY-USB AIO-160802AY-USB AIO-120802LN-USB AIO-121602LN-USB AI-1608VIN-USB AI-1608AIN-USB AI-1608GY-USB AI-1608AY-USB AI-1664LAX-USB CPSN-AI-1208LI (CC-USB271) CPSN-AI-2408LI (CC-USB271) |
256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) None (High performance analog input not supported) None (High performance analog input not supported) |
Yes (Buffer Memory 128K) Yes (Buffer Memory 8K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 8K) Yes (Buffer Memory 8K) Yes (Buffer Memory 8K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) No No |
■ Ethernet Devices AI-1608VIN-ETH AI-1608AIN-ETH |
256K (256*1024) 256K (256*1024) |
Yes (Buffer Memory 8K) Yes (Buffer Memory 8K) |
■ Wireless I/O Devices AI-1004LY-WQ AI-1004LY-WQ-EU AI-1004LY-WQ-US AI-1004LY-WQ-CN |
None (High performance analog input not supported) None (High performance analog input not supported) None (High performance analog input not supported) None (High performance analog input not supported) |
No No No No |
■ CONPROSYS Devices CPS-AI-1608LI (Used with CPS-BXC200) CPS-AI-1608ALI (Used with CPS-BXC200) |
256K (256*1024) 256K (256*1024) |
Yes (Buffer Memory 8K) Yes (Buffer Memory 8K) |
■ CONPROSYS nano Devices CPSN-AI-1208LI (CPSN-MCB271) CPSN-AI-2408LI (CPSN-MCB271) |
None (High performance analog input not supported) None (High performance analog input not supported) |
No No |
■ Other Devices AIO Demo Device |
256K (256*1024) |
Yes (No Buffer Memory) |
Up to this point, the software memory for high-performance analog input
has been described,
but there are also software memory for high-performance analog output,
which have the following merits.
・If the amount of data fits in the software memory, there is no need
to add data during output
・In the case of continuous output for a long time, there is a margin in
the time (time to add the output data in time)
until the operation ends after all the data is output.
Please refer to the following memory size of each device that supports high-performance analog output.
Devices | Memory Size | Use software memory |
■ Analog G-Series Boards AIO-163202F-PE ADA16-32/2(PCI)F |
64K (64*1024) 64K (64*1024) |
No No |
■
Analog F-Series Boards |
256K (256*1024) |
No |
■ Analog E-Series Boards AIO-121601E3-PE AIO-121601UE3-PE AIO-161601E3-PE AIO-161601UE3-PE AD12-16(PCI)EV AD12-16U(PCI)EV AD16-16(PCI)EV AD16-16U(PCI)EV |
None (High performance analog output not supported) None (High performance analog output not supported) None (High performance analog output not supported) None (High performance analog output not supported) None (High performance analog output not supported) None (High performance analog output not supported) None (High performance analog output not supported) None (High performance analog output not supported) |
No No No No No No No No |
■ Analog L-Series Boards AIO-160802LI-PE AIO-160802L-LPE AO-1604LI-PE AO-1604L-LPE AO-1608L-LPE AO-1616L-LPE ADAI16-8/2(LPCI)L ADA16-8/2(LPCI)L DAI16-4(LPCI)L DA16-4(LPCI)L DA16-8(LPCI)L DA16-16(LPCI)L |
256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) |
Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) |
■ Other Analog Input/Output Boards AO-1604CI3-PCI DA12-4(PCI) DA12-8(PCI) DA12-16(PCI) |
256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) |
Yes (No Buffer Memory) Yes (No Buffer Memory) Yes (No Buffer Memory) Yes (No Buffer Memory) |
Devices | Memory Size | Use software memory |
■ Analog USB Devices AIO-163202FX-USB AIO-160802GY-USB AIO-160802AY-USB AIO-120802LN-USB AIO-121602LN-USB AO-1604VIN-USB AO-1604AIN-USB AO-1604LX-USB |
256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) 256K (256*1024) |
Yes (Buffer Memory 128K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 1K) Yes (Buffer Memory 8K) Yes (Buffer Memory 8K) Yes (Buffer Memory 1K) |
■Ethernet Devices AO-1604VIN-ETH AO-1604AIN-ETH |
256K (256*1024) 256K (256*1024) |
Yes (Buffer Memory 8K) Yes (Buffer Memory 8K) |
■ CONPROSYS Devices CPS-AO-1604LI (Used with CPS-BXC200) CPS-AO-1604VLI (Used with CPS-BXC200) |
256K (256*1024) 256K (256*1024) |
Yes (Buffer Memory 4K) Yes (Buffer Memory 4K) |
■ CONPROSYS nano Devices CPSN-AO-1602LC |
None (High performance analog output not supported) |
No |
■ Other Devices AIO Demo Device |
256K (256*1024) |
Yes (No Buffer Memory) |