9 Application Instructions API 150-199
DVP-PLC Application Manual
9-22
i) For SC series MPU, many ZRN instructions can be compiled in the program but only one instruction can be
executed when the PLC program is being executed. For example, provided there is already an instruction
enabling Y10 output, other instructions enabling also Y10 output will not be executed. The principle of the
instruction execution is “first come, first executed”.
j) For SC series MPU, when you designate Y10 as the output device, you can choose either X10 or X11 for
DOG input in the “acceleration to deceleration” segment. In other words, when designating Y11 as the output
device, you can also choose either X10 or X11 for DOG input.
k) For SC series MPU, due to that this instruction does not compare between the number of output pulses, the
DOG input (from Off to On) will therefore become the trigger of acceleration converting to deceleration. The
“On” time of DOG has to be longer than 10us; otherwise the signal may be regarded as useless interference.
l) For SC series MPU, when the execution of the instrucion enters the deceleration segment and the output
frequency reaches creep speed (end frequency), the output will stop when DOG goes from On to Off.
m) For SC series MPU, the current accumulated number of pulses of Y10 is stored in D1348 and D1349 and that
of Y11 is stored in D1350 and D1351. Then the program operates from STOP to RUN or from RUN to STOP,
the contents will not be cleared to 0.
n) For SC series MPU, M1102 = On indicates the end of Y10 pulse output; M1103 = On indicates the end of Y11
pulse output.
o) For SC series MPU, after the instruction is executed, all parameters cannot be modified unless the execution
of the instruction stops.
p) For SC series MPU, when the execution of the stops, all outputs will stop immediately no matter what type of
the output it is.
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