2 Functions of Devices in DVP-PLC 2. The function: Output frequency = 1/1 pulse cycle period (i.e. 1/T; as the figure below) There are two output modes. K1 refers to “A-phase ahead of B-phase” and K2 refers to “B-phase ahead of A-phase”. The number of pulses accumulates once whenever a phase gap occurs. For example, the number of pulses in the figure below = 8, and when the number is reached, M1174 turns “On”. To clear the number, simply turn “Off” M1172. T Y0(A) Y1(B) 1 2 7 8 3 4 5 6 The output frequency, target number of pulses and selection of modes can be modified when M1172 = On and M1174 = Off.
Modification on output frequency and target number of pulses will not affect the present number of pulses, but when the mode is modified, the present number of pulses will be cleared as “0”. The present number of output pulses is updated in every scan time. When M1133 turns from “Off” to “on”, the number will be cleared as “0”. When M1172 is cleared as “0” when PLC goes from STOP to RUN. When PLC goes from RUN to STOP, the last number of pulses will be shown. 3. Note: This function can only be used when PLC is in RUN status and can coexist with PLSY instruction in the program. If PLSY instruction is executed prior to this function, the function cannot be used and vice versa.
Function Group VR Volume Number M1178 ~ M1179, D1178 ~ D1179 Contents: 1. Special D and special M for built-in 2-point VR volume for EH2/SV/EH3/SV2 and SA/SC: DVP-PLC Application Manual 2-117 Device No. Function M1173 On = Continuous output switch M1174 “Number of pulses reached” flag D1172 Output frequency (12Hz ~ 20kHz) D1173 Output mode (K1 and K2) D1174 The lower 16 bits of the 32 bits for the target number of pulses D1175 The higher 16 bits of the 32 bits for the target number of pulses D1176 The lower 16 bits of the 32 bits for the present number of pulses D1177 The higher 16 bits of the 32 bits for the present number of pulses Device No. Function M1178 Enable VR0 volume