Mitsubishi Electric MR-J4-_GF, Instruction Manual

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10. OBJECT DICTIONARY
10 - 38
(2) Usage
The following explains for latching the current position at the rising edge of TPR1 (Touch probe 1).
(a) Set "0013h" in Touch probe function (60B8h) to store data at rising edge of TPR1 (Touch probe 1).
(b) At this time, Touch probe status (60B9h) is set to "0001h", and the latched data has not been stored
yet.
(c) Use an external signal to turn on TPR1 (Touch probe 1).
(d) Touch probe status (60B9h) changes to "0003h", and the current position at the time of TPR1
(Touch probe 1) on will be stored to Touch probe position positive value (60BAh).
(e) Use an external signal to turn off TPR1 (Touch probe 1).
(f) Touch probe status (60B9h) remains "0003h", and the current position at the time of TPR1 (Touch
probe 1) off will not be stored to Touch probe position negative value (60BBh).
(g) Latching can be continued from (c).
The following shows a timing chart.
60B8h Bit 0
1
0
(a) 60B8h = 0013h
(d) 60B9h = 0003h
(b) 60B9h = 0001h
(c) TPR1 on (e) TPR1 off
(f) 60B9h = 0003h (g) Latches continuously
1
0
1
0
A 0
0
B C
1
0
1
0
1
0
1
0
ON
OFF
60B8h Bit 1
60B8h Bit 4
60B8h Bit 5
60B9h Bit 0
60B9h Bit 1
60B9h Bit 2
TPR1 (Touch Probe 1)
(Touch probe signal)
60BAh
60BBh
(3) High-precision touch probe
TPR2 (touch probe 2) supports high-precision touch probe. The normal touch probe has the latch
function with precision of 55
μ s. On the other hand, the high-precision touch probe latches startup of
TPR2 (touch probe 2) precisely with precision of 2 μ s. To use the high-precision touch probe, set [Pr.
PD37] to "_ _ _ 1". While the high-precision touch probe is being used, the encoder pulse output function
cannot be used. The precision of falling edge is 55
μ s in this case as well.