2 Functions of Devices in DVP-PLC Function Group Internal Clock Pulse Number M1011 ~ M1014 Contents: 1. All PLC MPUs provide four different clock pulses. When PLC is powered, the four clock pulses will start automatically. 10 ms M1011 (10 ms) 100 Hz 100 ms M1012 (100 ms) 10 Hz 1 sec M1013 (1 sec) 1 Hz 1 min M1014 (60 sec) 2. The clock pulses also start when PLC is in STOP status. The activation timing of clock pulses and that of RUN will not happen synchronously. Function Group High-Speed Timer Number M1015, D1015 Contents: 1. The steps for using special M and special D directly:
a) High-speed counter is valid only when PLC is in RUN status for EH2/SVEH3/SV2, but is valid when PLC is in RUN or STOP stauts for SA/SX/SC. b) M1015 = On: High-speed counter D1015 is enabled only whtn PLC scans to END instruction. (Min. timing unit of D1015: 100us) c) Timing range of D1015: 0~32,767. When the timing reaches 32,767, the next timing restarts from 0. d) M1015 = Off: D1015 stops timing immediately. 2. EH2/SVEH3/SV2 series MPU offers high-speed timer instruction HST. See API 196 HST for more details. 3. Example: a) When X10 = On, M1015 will be On. The high-speed timer will start to time and record the present value in D1015. b) When X10 = Off, M1015 will be Off.
The high-speed timer will be disabled. X10 M1015 DVP-PLC Application Manual 2-74