GSK 980TC3 Series, Руководство пользователя, Страница: 54 / 226

GSK980TC3 Series Bus Turning CNC system PLC, Installation and Connection User Manual
42
一
Programming
L
bit shifts every bit
A
shift status
L 0 0 A
Fig. 5-20-2
L
：
range: 0~8.
A ： bit parameter. A=0: When ACT=1 is shifting, the shift period is one bit.
A=1: ACT is taken as a pulse signal, it is 1 from 0, shift one bit.
Output:
W
：
W=0: “1” was not shifted out because of the shift operation.
W=1: “1” was shifted out because of the shift operation.
5.21 DIFU
（
Rising Edge Check
）
Function:
The DIFU instruction sets the output signal to 1 for one scanning cycle on a rising edge of the
input signal.
Format:
DIFU
ACT
L rising edge number
（
W
）
Fig. 5-21-1
Control condition:
Input signal: On a rising edge （ 0
Š
1 ） of the input signal, the output signal is set to 1.
Output signal: The output signal level remains at 1 for one scanning cycle of the ladder level
where this functional instruction is operating.
Parameter: Rising edge number
Parameter ：
L : rising edge number, range 0~255. Another DIFU instruction or DIFD instruction
in the ladder uses the same number, an alarm occurs.
Operation:
ACT
OUT
1 2 3 4
Execution
period
Fig. 5-21-2