0 1 00:00:21,570 --> 00:00:22,150 Hello. 1 2 00:00:22,200 --> 00:00:27,630 In this video we are going to learn how to use a st language in delta plcs. 2 3 00:00:27,870 --> 00:00:36,690 I will create a new project and controller type will be AS and the plc type will be AS332T say 3 4 00:00:36,690 --> 00:00:44,070 OK in the project tree we will see program section in the program section already. 4 5 00:00:44,080 --> 00:00:51,190 We are always creating our programs with the ladder language but now we will select structure text 5 6 00:00:51,490 --> 00:01:00,580 language and say OK and we will see complete interface of program is changed than you see now. 6 7 00:01:00,580 --> 00:01:03,860 There is no networks and also the lines. 7 8 00:01:03,940 --> 00:01:13,270 Now we have an editor like C programming or another high level languages programming areas but now 8 9 00:01:13,630 --> 00:01:16,260 we can write our code to here. 9 10 00:01:16,570 --> 00:01:26,650 I will define two variable first variable will be start motor and type will be bool and the second variable 10 11 00:01:26,800 --> 00:01:39,440 will be motor turning forward type will be bool and I will use it in our a still language programming 11 12 00:01:39,800 --> 00:01:40,610 page. 12 13 00:01:40,850 --> 00:01:44,030 If start motor 13 14 00:01:51,880 --> 00:01:53,060 what will happen. 14 15 00:01:53,170 --> 00:01:59,160 Motor turning forward will be 15 16 00:02:05,350 --> 00:02:09,250 and if this is our very basic very similar code. 16 17 00:02:09,610 --> 00:02:18,290 And I will create a device monitor table also to see what will happen in here I will let my identifiers 17 18 00:02:18,290 --> 00:02:27,260 from program 0 motor turning forward then also in here I will select start motor in here also program 18 19 00:02:27,260 --> 00:02:41,030 0 in program section I will go here I will send these codes to our plc now it will send it and transfer 19 20 00:02:41,480 --> 00:02:49,010 it is transferring and transfer is finished I will say run plc start motor what will happen if I say 20 21 00:02:49,010 --> 00:02:49,930 start motor. 21 22 00:02:49,970 --> 00:02:57,620 Now you see it is green now motor turning forward is activated stop motorist high motor turning forward 22 23 00:02:57,680 --> 00:03:03,620 is high start motorist set off but motor turning is still forward. 23 24 00:03:03,620 --> 00:03:04,140 Why. 24 25 00:03:04,220 --> 00:03:11,810 Because it is similar in the if loop it reads start motor then motor turning became through and then 25 26 00:03:12,020 --> 00:03:13,220 start motor is gone. 26 27 00:03:13,250 --> 00:03:14,660 But what will happen. 27 28 00:03:14,660 --> 00:03:17,030 We didn't put anything else. 28 29 00:03:17,030 --> 00:03:28,360 Let us put something else in here else if not start motor means motor turning 29 30 00:03:32,540 --> 00:03:35,300 forward will be false. 30 31 00:03:36,020 --> 00:03:44,940 So let's take a look again and say okay in here I made a mistake. 31 32 00:03:44,950 --> 00:03:47,300 Now go on line 32 33 00:03:50,420 --> 00:04:00,480 and yes it is transferring this project and project is transferred to simulator. 33 34 00:04:00,480 --> 00:04:08,430 Now you see motor turning is false because of here start motor and motors turning forward and somebody 34 35 00:04:08,430 --> 00:04:17,650 released push button start motor and motor turning forward this false and now I will open my online 35 36 00:04:17,740 --> 00:04:27,270 it area and use timer if if not start motor 36 37 00:04:31,460 --> 00:04:32,810 so I can write the here 37 38 00:04:37,380 --> 00:04:52,820 let's run our timer 3 second and else t 0 will be 0 and if so what will happen now. 38 39 00:04:52,840 --> 00:04:54,110 Let's take a look. 39 40 00:04:54,160 --> 00:04:59,120 I will send this to missing error. 40 41 00:04:59,180 --> 00:05:06,070 command that else because of why?should I use this. 41 42 00:05:06,070 --> 00:05:08,390 Let's take a look now. 42 43 00:05:08,410 --> 00:05:13,690 Yes I forgot it then update is completed now. 43 44 00:05:13,690 --> 00:05:25,880 So it is 30 because of motors start this of I Will Run motor start set on you say it is zero. 44 45 00:05:25,890 --> 00:05:34,090 Motorist turning forward and forward and forward then look this timer if start motor is goes off timer 45 46 00:05:34,120 --> 00:05:48,670 is counting counting and counting and now our time worries on so I will go I do it again in here according 46 47 00:05:50,660 --> 00:05:51,860 to timer 47 48 00:05:53,340 --> 00:05:57,910 We will get system error 48 49 00:06:00,720 --> 00:06:14,700 message how it will work if t 0 then I will create a two more or one more variable in here but now 49 50 00:06:14,700 --> 00:06:25,620 we are at on line it at mode so it is not possible so I will say go off line and I will say no if timer 50 51 00:06:25,790 --> 00:06:28,590 done then time timer coming. 51 52 00:06:28,680 --> 00:06:41,790 Start motor then start motor is off so motor is stopping we will create these variable motor stop and 52 53 00:06:41,970 --> 00:06:46,440 type will be bool and say OK motor 53 54 00:06:52,870 --> 00:07:10,410 will be true else motor stopped falls end_if, send changes to our simulator or in the reality 54 55 00:07:10,450 --> 00:07:13,300 plc doesn't matter. 55 56 00:07:13,350 --> 00:07:22,430 Yes I want to download the execution code now it's transferring our code to plc. 56 57 00:07:22,590 --> 00:07:32,050 It is sended and you see timer started to count that it's okay time is high and time high. 57 58 00:07:32,080 --> 00:07:33,670 Motor stop this high. 58 59 00:07:33,720 --> 00:07:35,580 You see now Motorstop. 59 60 00:07:35,960 --> 00:07:47,480 And if I say start motor now you see motor stopped is still true and we need to see why it is not stopped. 60 61 00:07:47,490 --> 00:07:53,280 This is another one question but in here start motor is okay motor is turning forward. 61 62 00:07:53,400 --> 00:07:57,330 If not start motor so stop motor is coming timer 62 63 00:07:57,480 --> 00:08:11,720 Didn't came(high) but in here we set timer is timer0 is should be zero but the timers contact is not 63 64 00:08:12,470 --> 00:08:14,340 not reset. 64 65 00:08:14,390 --> 00:08:19,700 So we need to reset this timer but this is another one point for a moment. 65 66 00:08:19,700 --> 00:08:20,900 Doesn't matter. 66 67 00:08:21,770 --> 00:08:30,140 If timer contact is goes off that moment they will say motor stop will be false. 67 68 00:08:30,320 --> 00:08:39,470 That's all but these are if loops and in here we have if repeat and while and for and case loops for example 68 69 00:08:40,490 --> 00:08:46,540 I can create in here just briefly and other one thing. 69 70 00:08:47,420 --> 00:08:51,600 How can I say for example steps. 70 71 00:08:51,690 --> 00:08:56,150 And this will be word and I can use it. 71 72 00:08:56,210 --> 00:09:02,010 Case steps of like this. 72 73 00:09:02,220 --> 00:09:13,980 And then for example 10 I can say start. 73 74 00:09:15,440 --> 00:09:16,490 Will be true 74 75 00:09:20,540 --> 00:09:21,550 case. 75 76 00:09:21,650 --> 00:09:23,000 So what will happen. 76 77 00:09:23,240 --> 00:09:31,640 I will go online again and I will send these things to the case because integer expressions so I need 77 78 00:09:31,640 --> 00:09:37,110 to change it to integer it s okay and go on line again. 78 79 00:09:37,260 --> 00:09:38,580 And yes right. 79 80 00:09:38,620 --> 00:09:43,150 This project to my plc and it's downloading 80 81 00:09:48,460 --> 00:09:49,440 yes. 81 82 00:09:49,480 --> 00:09:54,000 So now you see our steps as integer is 0. 82 83 00:09:54,370 --> 00:09:58,750 So I will say change present value to 10. 83 84 00:09:58,750 --> 00:09:59,820 What will happen now. 84 85 00:09:59,910 --> 00:10:01,010 Let's focus to here. 85 86 00:10:01,030 --> 00:10:09,740 You see now motor is 2 because a step ten is activated and now it is to say 9. 86 87 00:10:11,280 --> 00:10:16,390 And you see it is still true because we didn't reset it . 87 88 00:10:16,710 --> 00:10:24,720 So what will happen if start motor set of timer will count and etc. our motors stop falls or true 88 89 00:10:24,720 --> 00:10:26,260 commands an etc.. 89 90 00:10:26,670 --> 00:10:35,280 But my idea my goal in this video to show you how to create and a step programs and how to write is 90 91 00:10:35,280 --> 00:10:41,800 the language programming and how is the structure of a still language. 91 92 00:10:41,880 --> 00:10:50,070 This is there is still language you can add in here if and case and repeat file and for loops and they 92 93 00:10:50,070 --> 00:10:59,490 can continue to write our projects or programs I'm using for st languages to met instructions but 93 94 00:10:59,910 --> 00:11:08,300 in the detail st videos and the in advance st commands and the usage of st commands we will 94 95 00:11:08,500 --> 00:11:14,610 will look them all in the one by one in the next videos for this video I'm finished here. 95 96 00:11:14,610 --> 00:11:18,690 This one's the just for the show to you st basics. 96 97 00:11:18,780 --> 00:11:26,400 So we already learned how to create st program and have to add variables in st languages 97 98 00:11:26,400 --> 00:11:32,570 and how to use it and how to set on and set off of ,true and false and the cases and the loops. 98 99 00:11:32,640 --> 00:11:34,850 So I'm finished for this video. 99 100 00:11:34,860 --> 00:11:36,270 See you in the next video.