Step Item Description Reference
1-8 Final Check of Task
Period/Sampling
Period
Check whether or not you need to set a
task period again, since the task period
may need to be changed depending on the
size of the user program.
To change the task period, you need to set
a task period again. After completion of the
setting, perform the final check of the sam-
pling period on the Sampling Settings and
Digital Filter Settings Tab Page. If you
change the task period or a Unit operation
setting on the Digital Filter Settings T
ab
Page, the change is immediately reflected
on the sampling period value.
• Software user’s manual for
the connected CPU Unit
• 8-4-4 Checking the Sampling
Settings
on page 8 - 11
*1. To connect to the CPU Unit, check this on the CPU and Expansion Racks Tab Page. To connect to the Com-
munications Coupler Unit, check this on the Edit Slave Terminal Configuration Tab Page.
*2.
Check this on the Multi-view Explorer.
Precautions for Correct Use
• For the High-speed Analog Input Units, it takes time until the NX Unit I/O Data Active Status
changes to TRUE when power is turned ON or the Unit is restarted. When you write the pro-
gram, make sure that the Unit always checks if the NX Unit I/O Data Active Status has
changed to TRUE before it starts operation.
Refer to the software user's manual for the connected CPU Unit or the user’s manual for the
connected EtherCA
T Coupler Unit for information on the NX Unit I/O Data Active Status.
• When you use an NX-series High-speed Analog Input Unit in the CPU Rack or Slave Termi-
nal, the primary periodic task or the priority-5 periodic task should be assigned. If any other
periodic task is assigned, the Unit does not perform sampling correctly.
When any other periodic task is assigned, the High-speed Analog Input Units do not perform
sampling throughout the task period. They perform sampling only during a part of the task pe-
riod. Note that the Sysmac Studio does not display a correct sampling period on the Edit I/O
Allocation Settings Window and the Sampling Settings and Digital Filter Settings Tab Page.
2 Specifications and Operating Procedures
2 - 8
NX-series Analog I/O Units User’s Manual for High-speed Analog Input Units (W592)