With instruction of PLC output pulse method

let PLC controller output pulse method are still more, we can according to different load control, through the different instruction output pulse frequency is not the same. Below we to Japanese PLC ( Programmable controller) And friends about how to use the instructions to make PLC output pulse method.

with the basic instructions below to friends to introduce some basic methods of PLC output pulse, for example, we can use the auxiliary relay M0 pulse to produce a scan cycle, as shown in the figure below. If closed X0, for the first time scanning to M0 normally closed contact, M0 coil will have electricity. The second scan, from the very beginning when scanning the normally closed contact of M0, because M0 coil, normally closed contact has been disconnected, so losing electricity, M0 coil so M0 coil electricity for a scan cycle, thus M0 coil continuously electric and electric, so if connected to the output relay Y0, can let a PLC controller output continuous pulse

of course, we can also use a timer to achieve PLC controller pulse output unceasingly, when the auxiliary relay M8000 closed, because the timer T1 time didn't arrive, it's still broken contact is closed, Y0 output for the high level, after T1 timing to Y0 is a low level, T1 timing starts when the normally open contact closure of T0, when T0 time arrives, the normally closed contact reset, and make the T1 start timing, when Y0 and high level, and so the cycle, achieve the goal of the PLC output pulse

we can also use the PLC internal special auxiliary relay to realize pulse output, such as M8013 was a second clock pulse, as shown in the figure below. When the M8000 is ON, the output relay Y0 will to 0. 5 seconds for the high level, 0. 5 seconds for the low level, so repeated output pulse cycle for 1 second. Such a special auxiliary relay and M8011 period of 10 milliseconds of the output pulse, the output pulse M8012 cycle is 100 milliseconds, M8014 for 1 minute cycle of the output pulse, etc.

we say above PLC pulse output frequency is very high, or low frequency, we want to control some special load, then we can also use this command to control the servo motor or stepper motor, as shown in the figure below.

when closed X0, will command K12000 transferred to the storage of data in D, M0 normally open contacts will be closed at this time, Y0 D0 can be carried in the frequency of 1000 hz storage, the data from the PLC will have high-speed pulse output. So we use [PLSY K1000 D0 Y0] this article pulse output function instruction can also achieve a goal. Other brands of PLC can realize continuous pulse output.

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