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Reset Signals
3-6
Reset Signals
Software Reset Bit
Reset Enable sources:
Software Reset Enable Bit
Software Reset Bit as Reset
Source
CNT1:
CNT2:
n+2
n+5
Digital Input as Reset
Source
Z-Input Signal as Reset
Source
CNT1:
CNT2:
m+32
m+77
For every Counter a reset of the Counter Value to zero can be triggered by the fol-
lowing Sources:
•
Software Reset Bit
•
Digital Input
•
Z-signal
In order for a Digital Input or the Z-Signal to trigger a Reset this must be enabled
by the Software Reset Enable Bit. Additionally a Digital Input can be assigned the
function of Reset Enable (Function 15, refer to 3-4 "Digital Input Functions").
Reset sources:
Digital Input
Z-Signal
Digital Input
For every Counter the Software Reset Bit can be used to trigger a Reset. The Soft-
ware Reset Bit has priority over all other Reset Sources. Setting the Software
Reset Bit triggers a Reset in the next I/O Refresh Cycle.
15 14 13 12 11 10 9
In order to use a Digital Input as Reset Source you must assign Function 5, 6, 11,
12, 13 or 14 to the corresponding Digital Input. Refer to 3-4 "Digital Input Func-
tions" for more information.
If you want to use the Z-Signal of an incremental encoder as a Reset Source this
must first be enabled in DM. Using the Z-Signal can be enabled for every Counter.
15 14 13 12 11 10 9
OR
AND
Optional
8
7
6
5
4
3
2
8
7
6
5
4
3
2
OR
1
0
Software Reset Bit:
0→1 = Reset Counter
1
0
Z-Signal Control:
0 = Z-Signal Reset Disabled
1 = Z-Signal Reset Enabled
Section 3-6
Reset
Trigger
81
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