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6F3B0250
Basic Hardware and Function
119
6. Programming Information
Sampling trace function
The sampling trace function collects the status of specified devices or register at every
specified sampling timing. The collected data can be displayed on the programmer (T-
PDS) screen in the format of timing chart (for devices) or trend graph (for register). The
minimum sampling timing is the T1/T1S’s scan cycle.
This function is useful for program debugging and troubleshooting.
T1 T1S
Samplin
g
tar
g
et Devices (up to 8) or
Re
g
ister (only 1)
Devices (up to 8) and
Re
g
isters (up to 3)
Samplin
g
capacity 256 times for device
128 times for re
g
ister
256 times
The collected data is stored in the T1/T1S internal buffer.
The buffer works as a ring buffer, and latest collected data can be displayed.
The sampling start/stop condition (arm condition) and the collection timing (trigger
condition) can be specified by status changing of devices.
For detailed key operations for arm/trigger conditions setting on the T-PDS, refer to the
manual for T-PDS.
T-PDS screen example of device timing chart
NOTE
(1) On the T-PDS, select ‘3 registers + 8 devices’ as the sampling type.
(2) As the arm and trigger conditions, register values cannot be used.
(3) The After times setting is not effective for the T1/T1S.
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