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4.7
Touch probe
4.7.1 Definition
Touch probe function is to record the current position with sensing inputs from an external
signal.
4.7.2 Related objects
Table 4-31: Touch Probe related objects.
Object
Access Description
Touch probe function
RW
Control Touch Probe 1/2.
Touch probe status
RO
Indicate status of Touch Probe 1/2.
Touch probe 1 positive value
RO
Indicate detected position of Rising
edge of Touch Probe 1.
Touch probe 1 negative value
RO
Indicate detected position of Falling
edge of Touch Probe 1.
Touch probe 2 positive value
RO
Indicate detected position of Rising
edge of Touch Probe 2.
Touch probe 2 negative value
RO
Indicate detected position of Falling
edge of Touch Probe 2.
Touch probe 1 positive edge counter
RO
Indicate detected frequency of Rising
edge of Touch Probe 1.
Touch probe 1 negative edge counter
RO
Indicate detected frequency of Falling
edge of Touch Probe 1.
Touch probe 2 positive edge counter
RO
Indicate detected frequency of Rising
edge of Touch Probe 2.
Touch probe 2 negative edge counter
RO
Indicate detected frequency of Falling
edge of Touch Probe 2.
Touch probe source
RO
Select input signal of Touch Probe
1/2.
4.7.3 Touch Probe Status and Control
4.7.3.1
Touch Probe Operation : Acknowledge initial signal
If Touch probe function of bit number 1, 9 has set as 0, Touch probe only uses initially
acknowledged signal after Enable. Please refer to Timing chart as follow.