Omron OMNUC W R88A-NCW152-DRT, Manual

Page: 170 / 292

6.9 Tracing Data
6-73
6
I/O Trace 2 (Object: 0x67; Instance: 0x01; Attribute: #13)
Set the target for I/O Trace 2. The settings are the same as for I/O Trace 1.
Sampling Cycle (Object: 0x67; Instance: 0x01; Attribute: #14)
Set the interval for executing the trace function. The setting is made in multiples of 250
µ
s,
and the setting range is 250
µ
s to 8,191,750
µ
s.
Trigger Target (Object: 0x67; Instance: 0x01; Attribute: #15)
Set the target for activating the trigger. The objects that can be selected are the four targets
set for Data Trace 1, Data Trace 2, I/O Trace 1, and I/O Trace 2, as well as “no trigger.”
When “no trigger” is set, the trigger is activated when tracing begins, and the Trigger Level,
Trigger Edge, and Pre-trigger Data Amount settings are disabled.
Trigger Level (Object: 0x67; Instance: 0x01; Attribute: #16)
Set the criteria for detecting the trigger. The unit for this setting is the same as for the Trigger
Target. If the Trigger Target is set for I/O Trace 1, I/O Trace 2, or no trigger, the trigger level
setting is disabled.
Edge Type (Object: 0x67; Instance: 0x01; Attribute: #17)
Set the direction of change when the trigger is considered valid. If the Trigger Target is set to
no trigger, the Edge Type setting is disabled.
Set Value Contents
0000 Hex
No trigger target
0001 Hex
Data set for Data Trace 1
0002 Hex
Data set for Data Trace 2
0003 Hex
I/O data set for I/O Trace 1
0004 Hex
I/O data set for I/O Trace 2
Set Value Contents Trace Target Remarks
0000 Hex
Rising edge Trace data The trigger is detected when the data changes from
less than the trigger level to the trigger level or
higher.
I/O trace The trigger is detected when the signal changes from
low to high.
0001 Hex
Falling edge Trace data The trigger is detected when the data changes from
higher than the trigger level to the trigger level or
lower.
I/O trace The trigger is detected when the signal changes from
high to low.
0002 Hex
Changed edge Trace data The trigger is detected when the trigger target data
changes across the trigger level.
I/O trace The trigger is detected when the signal level
changes.