0 1 00:00:21,240 --> 00:00:22,110 Hello. 1 2 00:00:22,140 --> 00:00:24,460 In this video we are going to learn speed. 2 3 00:00:24,480 --> 00:00:32,250 Command the number of pulses received within the time period, time period is the key word is of speed. 3 4 00:00:32,260 --> 00:00:35,250 Command determined by the SPD command or speed. 4 5 00:00:35,250 --> 00:00:40,620 Command is periodically counted and the result is recorded in a specified data. 5 6 00:00:40,770 --> 00:00:47,820 When the speed command is used some calculations are required to calculate the speed for these using 6 7 00:00:47,820 --> 00:00:49,460 formula like this. 7 8 00:00:49,530 --> 00:01:01,880 By these same thing the number of revolutions is found in meters per second or rpm. So after 8 9 00:01:01,880 --> 00:01:11,360 we get a value or found of value after a speed command this value will be as our RPM value. for example. 9 10 00:01:11,360 --> 00:01:14,420 The result will be 500. 10 11 00:01:14,450 --> 00:01:25,850 So we can say okay our motor is turning 500 RPM in the Formula D ,in here D0 and in here 11 12 00:01:25,880 --> 00:01:26,670 nT. 12 13 00:01:26,750 --> 00:01:37,940 And the result will be as rpm. So first thing external pulse input from S1 number of pulse signals. 13 14 00:01:38,060 --> 00:01:43,850 Also S2 is pulse time so we will decide the time. 14 15 00:01:43,880 --> 00:01:51,560 So in this time period as I told you in the beginning of the video we will use time periods to detect 15 16 00:01:51,560 --> 00:01:57,300 a speed and we will get the result from the or from here. 16 17 00:01:57,290 --> 00:02:03,170 The important note for the speed come on high speed counters or interrupts related to the inputs used 17 18 00:02:03,170 --> 00:02:03,680 in the speed. 18 19 00:02:03,680 --> 00:02:09,560 Command can no longer be used for high speed counters or before interrupts. 19 20 00:02:09,560 --> 00:02:12,650 two related to the inputs. 20 21 00:02:12,710 --> 00:02:19,960 Normally we can adapt our inputs as high speed counters or interrupts if we are using split command. 21 22 00:02:19,970 --> 00:02:24,050 These things can not be usable after speed. 22 23 00:02:24,050 --> 00:02:27,210 Command is used starting from the selected register. 23 24 00:02:27,210 --> 00:02:28,920 The 4 result. 24 25 00:02:28,920 --> 00:02:29,480 5. 25 26 00:02:29,480 --> 00:02:33,410 Register D regions are used for this common for example. 26 27 00:02:33,410 --> 00:02:44,590 If you put here D0 D1 D2 D3 and D4 also will be used by speed command. 27 28 00:02:45,140 --> 00:02:54,590 And D and D+1 data keeps the previous past detection result as 32 bit D2 D0+2 28 29 00:02:54,590 --> 00:02:55,460 for example. 29 30 00:02:55,580 --> 00:03:00,630 I mean D+2 and D+3 data registers. 30 31 00:03:00,800 --> 00:03:03,560 Keep the current active pulse count. 31 32 00:03:03,560 --> 00:03:08,140 Value is 32Bit , D+4 this data register. 32 33 00:03:08,140 --> 00:03:09,920 Equals , data shows 33 34 00:03:09,920 --> 00:03:16,070 The remaining time of the active count maximum 32767 millisecond 34 35 00:03:16,580 --> 00:03:25,340 one SPD command can actively run simultaneously in SS SA, SX ,EH2, ... 35 36 00:03:25,340 --> 00:03:34,300 plcs and multiple speedy commands can actually run simultaneously in SS2,SA2, ES2 .. 36 37 00:03:34,430 --> 00:03:46,670 model in Delta plcs ,in here we have an example when x 7 is on when this contact on the data periodically 37 38 00:03:46,670 --> 00:03:56,580 comes the pulse triggers coming to x1 input this is our pulse trigger input or pulse input in 1000 38 39 00:03:56,900 --> 00:04:02,180 millisecond timeframes like we said in the beginning time period. 39 40 00:04:02,540 --> 00:04:11,730 So we will get the pass times as millisecond and we decided in here 1000 millisecond is 40 41 00:04:11,840 --> 00:04:17,470 standard when you put here 100 it will be 100 milliseconds. 41 42 00:04:17,850 --> 00:04:27,430 These speed command saved the value counted at the end of 1000 milliseconds to D0 42 43 00:04:27,590 --> 00:04:36,430 It writes or stores the speed calculations result in D0. 43 44 00:04:36,470 --> 00:04:39,420 You can see the graphics in here. 44 45 00:04:39,510 --> 00:04:39,940 Okay. 45 46 00:04:40,050 --> 00:04:48,500 When 7 is on X1 is the pulses are coming and goes off and on On and off. 46 47 00:04:48,500 --> 00:04:58,140 Something like this with the square wave and then our present value. 47 48 00:04:58,160 --> 00:05:01,880 How many a data or pulses are counted. 48 49 00:05:01,880 --> 00:05:04,770 Or what is the actual existing value. 49 50 00:05:04,850 --> 00:05:12,930 So we can monitor it in D2, D0 and D1 and D2 so D+2. 50 51 00:05:12,950 --> 00:05:20,240 Like I said in here D+2 and D+3, Data keep the current active pulses as 32 bit. 51 52 00:05:20,240 --> 00:05:30,620 so it shows you present value and also after 1000 millisecond you will get detected value 52 53 00:05:30,920 --> 00:05:33,980 in D0 in that point. 53 54 00:05:34,040 --> 00:05:42,650 After 1000 milliseconds you will get result by speed command or a speed instruction 54 55 00:05:43,010 --> 00:05:52,470 so you will get a value as RPM for example 100 RPM or 133 RPM in D zero. 55 56 00:05:52,500 --> 00:05:56,330 If you want to monitor to present volume present. 56 57 00:05:56,350 --> 00:06:00,830 counted pulses. 57 58 00:06:00,960 --> 00:06:11,440 So you need to check D2 and D3 value and content in D4 you can see in here like this 58 59 00:06:12,990 --> 00:06:14,090 what was it. 59 60 00:06:14,340 --> 00:06:22,910 D+four the remember D+4 data shows the remaining five time of the active count. 60 61 00:06:23,280 --> 00:06:33,570 So the time will be 1000 milliseconds and it will go down and after 1000 millisecond content 61 62 00:06:33,660 --> 00:06:42,570 in D4 will be zero and that moment we will get our detected value inside of the D0 and at that 62 63 00:06:42,570 --> 00:06:50,510 moment D2 present value will be Max also after 1000 milliseconds we will start to count again and 63 64 00:06:50,530 --> 00:06:58,620 the D2 will start from zero and our content in D4 will be 1000 milliseconds again and 64 65 00:06:58,620 --> 00:07:05,190 it will go down again and that moment we will wait till 1000 milliseconds is finished. 65 66 00:07:05,550 --> 00:07:14,110 Then again we will get a speed for example 350 in D0. 66 67 00:07:14,160 --> 00:07:18,970 So this is formula for the SPD command or a speed instruction. 67 68 00:07:18,990 --> 00:07:21,840 How can we use it in the Delta plcs. 68 69 00:07:21,840 --> 00:07:25,660 This is the usage of the of this formula in wplsoft. 69 70 00:07:25,710 --> 00:07:30,840 This is created inside of the wplsoft software for Delta plcs. 70 71 00:07:31,230 --> 00:07:42,000 It's a speed command that is used X0 is assigned to pulse input and K1000 is our time period 71 72 00:07:42,030 --> 00:07:48,110 1000 milliseconds and the result will be read or stored in D100. 72 73 00:07:48,210 --> 00:07:58,460 So we are multiplying D100 value with K1000 and the result is stored in D110 73 74 00:07:59,310 --> 00:08:08,940 And then also we are multiplying D100 with 60 in here 1000 is coming from here. 74 75 00:08:09,000 --> 00:08:10,170 10^3. 75 76 00:08:10,180 --> 00:08:13,790 60 coming from here. 76 77 00:08:13,810 --> 00:08:16,790 The zero means in this example. 77 78 00:08:16,800 --> 00:08:21,360 We use the D100 because of this we used in here also D100 78 79 00:08:21,600 --> 00:08:30,940 So also in here we are dividing by 1000 because of why we are adopted. 79 80 00:08:31,090 --> 00:08:35,980 our value as the time period is 1000 80 81 00:08:35,980 --> 00:08:41,150 Also we are dividing by 100 81 82 00:08:41,150 --> 00:08:42,010 Why. 82 83 00:08:42,020 --> 00:08:43,370 Because . 83 84 00:08:43,460 --> 00:08:48,920 In this example also we are using where can we see it. 84 85 00:08:48,980 --> 00:08:50,300 in the nt time 85 86 00:08:50,300 --> 00:08:51,890 Time interval counted. 86 87 00:08:52,220 --> 00:08:56,260 And the pulses generated by the encoder in one turn. 87 88 00:08:56,270 --> 00:08:59,790 So how can I explain this. 88 89 00:09:00,600 --> 00:09:06,820 Your encoder turns for example if it can be equal to 120 89 90 00:09:07,050 --> 00:09:17,420 But this is not a correct example because encoders generally will be 1024 or 512 90 91 00:09:17,430 --> 00:09:26,070 ppr and will be for example 256ppr in this example we set our 91 92 00:09:26,070 --> 00:09:31,190 encoder generating 100 pulse after one turn. 92 93 00:09:31,200 --> 00:09:37,740 So you can see the explanation and nt in here and was the pulse signal generated by the encoder in 93 94 00:09:37,740 --> 00:09:38,560 one turn. 94 95 00:09:38,580 --> 00:09:46,240 T was time interval counted as millisecond so you can apply this formula to your projects to your 95 96 00:09:46,370 --> 00:09:48,180 plc programs like this. 96 97 00:09:48,180 --> 00:09:52,470 This is just an example to how can you use it. 97 98 00:09:52,500 --> 00:09:55,060 How can you adopt your plc programs 98 99 00:09:55,080 --> 00:10:03,630 According to this formula so you can multiply by these values to 1000 and D60 99 100 00:10:03,630 --> 00:10:08,920 But don't forget this you need to use DMUL DDIV. 100 101 00:10:08,960 --> 00:10:13,420 32 bit the multiplying 32 bit dividing. 101 102 00:10:13,650 --> 00:10:21,630 So these are all writing into another register but after this calculation is written to D120 102 103 00:10:21,630 --> 00:10:24,950 D120 is used in here. 103 104 00:10:25,030 --> 00:10:27,060 D130 in here. 104 105 00:10:27,210 --> 00:10:33,200 In the end you will get the result of this formula in D140 105 106 00:10:33,330 --> 00:10:35,520 In this video I am finished here. 106 107 00:10:35,520 --> 00:10:36,930 See you in the next video.