0 1 00:00:21,150 --> 00:00:22,400 Hello. 1 2 00:00:22,510 --> 00:00:26,490 In this video we are going to learn scale command. 2 3 00:00:27,190 --> 00:00:33,400 We can say that the scale command is used to see or use the analog data in the range 3 4 00:00:33,460 --> 00:00:35,530 We want with the scale. 4 5 00:00:35,530 --> 00:00:37,920 Command or scale instruction. 5 6 00:00:37,930 --> 00:00:45,880 The data whose value range is read from the source data can be converted into the desired range 6 7 00:00:45,910 --> 00:00:47,210 or desired data. 7 8 00:00:47,680 --> 00:00:52,920 So for example on also you can see our graphs in here. 8 9 00:00:52,930 --> 00:00:54,170 Let's take a look first. 9 10 00:00:54,280 --> 00:01:01,930 Our example the analog signal zero to ten volt connected to analog input of PLC and let's say these 10 11 00:01:02,350 --> 00:01:09,750 analog input value is equals to 0-4000 value in PLC. 11 12 00:01:10,090 --> 00:01:17,770 If we want to convert and to see zero four thousand value is zero to one hundred value in the PLC or 12 13 00:01:17,770 --> 00:01:19,510 HMI etc. 13 14 00:01:19,510 --> 00:01:21,200 This can be possible. 14 15 00:01:21,220 --> 00:01:26,660 These processing handle with can be handled at with scale. 15 16 00:01:26,670 --> 00:01:29,230 command in here let's 16 17 00:01:29,230 --> 00:01:38,410 Take a look to our example our source value, minimum source value is zero and the maximum source value 17 18 00:01:38,410 --> 00:01:51,810 is going to be four thousand and our destination value will be maximum as maximum one hundred according 18 19 00:01:51,810 --> 00:01:54,280 to our desired range. 19 20 00:01:54,300 --> 00:01:59,170 We want to see this data as 0 to 100. 20 21 00:01:59,430 --> 00:02:01,430 So this is our graphs 21 22 00:02:01,440 --> 00:02:10,610 So in the PLC for example the data will be equal to two thousand and the output of these two thousand 22 23 00:02:10,620 --> 00:02:16,490 data will be half of our destination value = 50. 23 24 00:02:16,500 --> 00:02:27,740 So in the HMI for example we are going to say okay for example the tank is half full or half of 24 25 00:02:27,770 --> 00:02:36,710 our tank is empty or let's take a look to another example and let's learn how to use scale command in 25 26 00:02:36,710 --> 00:02:38,620 our plc projects. 26 27 00:02:38,690 --> 00:02:45,790 Imagine 0 to 20 mA our pressure sensor connected to 04AD analod card 27 28 00:02:45,830 --> 00:02:55,400 And in the this analog card we are giving this value as example for a moment 0 to 20 ma 28 29 00:02:55,430 --> 00:02:59,300 equal to 0 to 4000 value inside of the PLC. 29 30 00:02:59,570 --> 00:03:06,860 And the scaled value should be between zero to one hundred as percentage the analog value between 30 31 00:03:06,920 --> 00:03:13,370 0 to 4000 is going to be in d20 data register. 31 32 00:03:13,430 --> 00:03:17,960 So we are going to write this value in d20 and in here. 32 33 00:03:17,960 --> 00:03:25,700 Let's take a look what we have maximum analog input value as digital in PLC is going to be 4000 according 33 34 00:03:25,700 --> 00:03:35,030 to our example minimum analog input value as digital in plc is going to be zero and maximum desired 34 35 00:03:35,060 --> 00:03:44,960 output range will be one hundred and minimum desired output range is going to be zero and in here. 35 36 00:03:44,990 --> 00:03:46,970 Let's take a look our example. 36 37 00:03:47,210 --> 00:03:52,340 So our source maximum value is D100. 37 38 00:03:52,340 --> 00:03:54,820 This is just an example. 38 39 00:03:54,980 --> 00:04:02,910 But this is K4000 is our analog input value as maximum value. 39 40 00:04:03,090 --> 00:04:08,170 Source Max we are moving it always on with the always on contact. 40 41 00:04:08,170 --> 00:04:17,450 In here we are moving this value to D100 and source min value is zero is we are moving is this value 41 42 00:04:17,780 --> 00:04:23,040 to D101 and now target max value. 42 43 00:04:23,210 --> 00:04:29,750 So our target maximum value or desired output range maximum value is one hundred and we are moving it 43 44 00:04:29,750 --> 00:04:36,370 to be D102 and minimum desired output range is zero. 44 45 00:04:36,380 --> 00:04:45,130 So we are moving the zero value to D103 and in here we are using our scale command 45 46 00:04:45,390 --> 00:04:50,870 SCLP D20 remember what was it. 46 47 00:04:51,290 --> 00:05:01,840 It is our written reading value as it is coming from the our pressure sensor and D100 is remember 47 48 00:05:01,910 --> 00:05:10,790 it is coming from here it is our maximum value and this scale command is going to use this for parameter 48 49 00:05:11,120 --> 00:05:21,260 in the instruction and d200 is our reading value what we are reading in D200 49 50 00:05:21,590 --> 00:05:31,550 for example if the data is written from the reading not written reading from the pressure sensor 50 51 00:05:31,650 --> 00:05:42,260 equals to let's say 5 mA and 5 mA is going to be equal to 1000 inside of the plc and according 51 52 00:05:42,260 --> 00:05:51,020 to our scale command and according to our source max and min and target max and min values we are 52 53 00:05:51,020 --> 00:05:55,300 going to see 25 in d200 53 54 00:05:55,520 --> 00:06:07,510 So in in D200 is to 25 , %25 It means quarter 54 55 00:06:08,110 --> 00:06:17,870 value is reading from the pressure sensor for example if the reading data is 2000 so we are 55 56 00:06:17,870 --> 00:06:27,550 going to see a 50% in D200 data registers for example if this value is 4000 it 56 57 00:06:27,550 --> 00:06:39,010 is coming from the 4000 from the pressure sensor so we are going to see 100 inside of D200 data register. 57 58 00:06:39,080 --> 00:06:42,430 So in this video I am finished here. 58 59 00:06:42,440 --> 00:06:44,200 See you in the next video.