Instruction manual

143
Graph (Monitor Area)
4
FUNCTION
4.9.5 Trigger setting
With making Trigger setting, sampling can be started at a fault occurrence or when sampling item meets a trigger condition.
No. Name Function and description
A
Type
Select a trigger type for sampling start. You can select the trigger type from the following
three.
• Not used
• Inside (Sampling starts when sampling item meets a trigger condition)
• Fault (Sampling starts at a fault occurrence)
B
CH/St. No.
Selecting item is different according to the trigger type.
• For Inside trigger:
Select a trigger item (CH1 to CH8).
• For Fault trigger:
Select a station number for checking a fault. Station number from which sampling item is
already set can be selected.
C
Start At
Select a trigger meeting condition from Rise or Fall. (Only "Rise" can be selected for Fault
trigger.)
•Rise
For analog data: Starts when a value exceeds more than a setting of Trigger Level
For digital data: Starts when a signal turns ON from OFF
•Fall
For analog data: Starts when a value falls lower than a setting of Trigger Level
For digital data: Starts when a signal turns OFF from ON
D
Level
Set a level of trigger meeting condition for analog signal.
(Setting is available only when Inside trigger is set, and analog data is selected.)
E
Position [%]
Set a percentage for an amount of data before trigger meets the condition. The amount
based on the specified percentage of total sampling data is assigned for the data before
trigger meets the condition.
Value is 10% increments and can be set from 10% to 90%.
REMARKS
• For starting with analog data
If the trigger condition has already met when is clicked, sampling will not start. Sampling starts only when a value
exceeds more than the setting of "Level" when "Rise" is selected, or when the value falls lower than the setting of "Level" when
"Fall" is selected.
Example: when trigger starts at "Rise", and "3" is set for Level
If the value is already 4 at sampling start, then this case does not meet trigger condition. If the value lower than 3 exceeds more
than 3, then the case meets trigger condition, and starts sampling.
• When monitor display is changed to the machine speed with a value other than 0 is set in Pr. 37 Speed display
When setting "Output Frequency" or "Frequency Setting" for Inside trigger, set machine speed for trigger level directly into
"Level" field.
For example, if 1800 is set in Pr. 37 Speed display, sampling "Output Frequency", and want to meet trigger condition at 900, then
you can set 900 directly into "Level" field.
B
A
C
D
E