EM3E Series EtherCAT Stepper Drive User Manual
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6.3 Touch Probe
Touch probe function is to capture and record the actual position of the motor by using the
input signal with the touch probe function. The EM3E driver has two input I/O signals to
support the probe function and can be enabled at the same time. The probe function related
object dictionaries are shown in Table 6.6.
Table 6.6
:
Related Object Dictionaries of Touch Probe
Index
Bit Definition
60B8h
7-6
5
4
3-2
1
0
-
Touch
Probe
1
falling
edge
trigger
Touch
Probe
1
rising edge trigger
-
Touch Probe 1
mode
Touch
Probe
1
enable
15-14
13
12
11-10
9
8
-
Touch
Probe
2
falling
edge
trigger
Touch
Probe
2
rising edge trigger
-
Touch Probe 2
mode
Touch
Probe
2
enable
60B9h
7
6
5-3
2
1
0
Actual
level
of
touch
probe 2
Actual
level of
Touch
Probe 1
Touch
Probe
1
falling edge trigger
complete
Touch Probe 1 rising
edge
trigger
complete
Touch Probe 1
action
15-11
10
9
8
-
Touch
Probe
2
falling edge trigger
complete
Touch Probe 2 rising
edge
trigger
complete
Touch Probe 2
action
60BAh
Touch Probe 1 rising edge capture data value register
60BBh
Touch Probe 1 falling edge capture data value register
60BCh
Touch Probe 2 rising edge capture data value register
60BDh
Touch Probe 2 falling edge capture data value register
60FDh
The state of bit26 is bit 1 and bit 2 AND logic of Object (60B9h); The state of bit27 is bit 9 and bit
10 AND logic of Object (60B9h)
2152h
It can be configured as probe 1 or probe 2 by writing its sub-indexes 01h and 02h to 17 or 18.
Additional information on other bits:
The bit0 and bit8 of Object (60B8h): start/stop control bit of Touch Probe 1 and Touch
Probe 2 respectively,and the rising edge is effective.
The bit1 and bit9 of Object (60Bh): Touch Probe modes are divided into single mode and
continuous mode.
o
Single mode: After a Touch Probe is activated, it is captured only under the first
trigger signal. In order to capture the new position value again, the bit0 /bit8 of the
Object (60B8h) must be given a rising edge signal to restart the probe action.
o
Continuous mode: After a Touch Probe is activated, the capture action is carried
out under each trigger signal.