3 . I ns t r uc ti on Se t3- 1 4 12. Description of associated special D registers:D1030: Present number of Y0 output pulses (Low word).D1031: Present number of Y0 output pulses (High word).D1032: Present number of Y1 output pulses (Low word).D1033: Present number of Y1 output pulses (High word).D1336: Present number of Y2 output pulses (Low word).D1337: Present number of Y2 output pulses (High word).D1338: Present number of Y3 output pulses (Low word).D1339: Present number of Y3 output pulses (High word).D1220: Phase of the 1st group pulse output (Y0,Y1), please refer to explanations of theinstruction.D1221: Phase of the 2nd group pulse output (Y2,Y3), please refer to explanations of theinstruction.3. More explanations for M1347,M1348, M1524, M1525:Generally when pulse output is completed, PLSY instruction has to be reset so that theinstruction can start pulse output one more time. When M1347, M1348, M1524 or M1525 isenabled, the associated output terminals (Y0~Y3) will be reset automatically when pulse outputis completed, i.e. the PLSY instruction is reset. When PLC scans to PLSY instruction again, thepulse output starts automatically. In addition, PLC scans the 4 flags after END instruction, hencePLSY instruction in continuous pulse output mode requires a delay time of one scan cycle fornext pulse output operation.The function is mainly used in subroutines or interrupts which require high speed pulse output.Here are some examples:Program Example 1:M1000EIFENDI 001IRETM1000DPLSY K1000 K1000 Y2I 101IRETSET M1524ENDDPLSY K1000 K1000 Y0SET M1347
