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5.4 Using the Preset Function
5
FUNCTIONS
(2) Operation when presetting by the external control signal
Apply ON voltage to the preset input terminal (PRST) for external input to execute
preset. Operation example is indicated in Figure 5.13.
Figure 5.13 Operation example of the preset function by external control signal
POINT
When the external preset request detection (X08) is OFF, both the preset
command (Y04) and the preset input terminal (PRST) are valid.
Table 5.11 Details of operation example of the preset function by external control signal
Number Description
1)
Write any value in the preset value setting (Un\G4 and 5) of the QD64D2 in 32-
bit binary format.
2)
When the preset input terminal (PRST) is turned from OFF to ON, the preset
value setting (Un\G4 and 5) is stored in the present value (Un\G12 and 13).
The preset can be executed regardless of ON/OFF status of the count enable
command (Y06).
3)
While the external preset request detection (X08) is ON, the preset cannot be
executed by turning ON the preset command (Y04) or the preset input terminal
(PRST).
4)
When the external preset request detection reset command (Y08) is turned ON
and the external preset request detection (X08) turns OFF, the preset can be
executed.
*t 2ms
ON
OFF
ON
OFF
ON
OFF
20012000
0
10671066106510021001
1000
ON
OFF
20000
1)
3)
3)
2)2) 2)
4)
t*
t*
t*t*
2023 2024 2025 2000 2001
ON
OFF
1000
1)
t*
Count enable command
(Y06)
Counter input pulse
Preset value setting
(Un\G4 and 5)
Preset command
(Y04)
Preset input terminal
(PRST)
External preset
request detection
(X08)
External preset request
detection reset command
(Y08)
Present value
(Un\G12 and 13)
to to