2 Functions of Devices in DVP-PLC 3. The functions: This function can only be used on Y0 output point and the timing chart is as follows. After filling out the parameter table, setup M1144 to start the function (should be applied in RUN mode). GF GF Frequency(Hz) TF2 GT SF3 GT TF4 SF4 TF1 SF2 TF3 SF1 Time(ms) 1st section number of pulses (SE1) 2nd section number of pulses (SE2) 3rd section number of pulses (SE3) 4th section number of pulses (SE4) 4. How to use and the restrictions: a) The start frequency and target frequency have to be ≥ 200Hz; otherwise, the function will not be executed or complete execution.
b) The start frequency and target frequency have to be 32,700Hz will be executed in 32,700Hz. c) Range of gap time: 1 ~ 32,767ms (Min. unit: ms) d) The range of gap frequency within acceleration section: 1Hz ~ 32,700Hz; within deceleration section: -1 ~ -32,700Hz. If the gap frequency is set as 0Hz, it will fail to reach target frequency in the executed section but in the next section when the target number of pulses is reached. e) The target number of pulses in a section has to be > (GF Ч GT/1,000) Ч [(TF - SF)/GF]; otherwise the target may not be reached. To correct it, the user may extend gap time or increase the target number of pulses.
f) When PLC is in RUN status and there is a high-speed instruction assigning Y0 input, the instruction will be executed prior to other instructions. g) After M1144 = On, if M1148 has not be reached and M1144 is “Off”, deceleration will be enabled. And if M1154 = Off at the moment, the deceleration rule will be “decelerating 200Hz every 200ms” and M1147 will be set. The pulse output will stop when the frequency falls under 200Hz. If M1154 = On at the moment, the output will be executed following the gap time and frequency as set by the user.
The time shall not be ≤ 0 (if ≤ 0, it will follow the initial setting 200ms) and the frequency shall not be ≥ 0 (if = 0, it will follow the initial setting -1kHz; if > 0, negative sign comes before the value). h) When M1148 = On but M1144 = Off, deceleration will not be enabled and M1148 will be reset. Whenever M1144 = Off, M1149 will be reset. DVP-PLC Application Manual 2-105