Changes for page 01 Program execution
Last modified by Leo Wei on 2024/12/24 22:42
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... ... @@ -1,138 +1,11 @@ 1 -= **S ummary** =1 += **Scan structure** = 2 2 3 -This manual has a comprehensive introduction to the basic functions of WECON PLC Editor and the actual use. This book is completely aimed at zero-based readers, is an essential reference book for entry-level readers to quickly and fully grasp WECON PLC and WECON PLC Editor. 4 - 5 -This book starts from the basic product of WECON PLC and the basic concept and operation of WECON PLC Editor. It combines with a large number of cases and graphic analysis to comprehensively and deeply explain the use of WECON PLC Editor Software, as well as PLC program. 6 - 7 -WECON technology Co., Ltd. All rights reserved. 8 - 9 -= Precautions = 10 - 11 -Before the installation, operation, maintenance and repair of the micro programmable control, please read this manual and other related manuals to ensure correct use. Please use it after you have mastered the operation method, safety information and all 12 - 13 -== Design == 14 - 15 -In the event of an abnormality in the external power supply or failure of the programmable controller, to ensure the safe operation of the entire system, be sure to install a safety circuit outside the programmable controller. 16 - 17 -1. Be sure to install an emergency brake circuit, a protection circuit, an interlock circuit for reverse operation, such as an emergency brake circuit, a protection circuit, a forward and reverse circuit, and an interlock circuit for the upper and lower positioning limits to prevent machine damage, in the external circuit of the programmable controller. 18 -1. When the programmable controller CPU detects abnormal conditions such as WDT errors through self-diagnosis, all outputs are shut off. In addition, when the programmable controller CPU cannot detect abnormalities in the input/output control part, etc., it cannot control the output. At this time, in order to make the machine operate safely, please design the external circuit and mechanism. 19 -1. Due to the failure of the relay and transistor of the output unit, it is impossible to control the state of the output to ON or OFF. In order to ensure the safe operation of the machine, please design external circuits and mechanisms for output signals related to major accidents. 20 - 21 -== Installation == 22 - 23 -1. Please use it in the general specification environment described in the manual. 24 - 25 -Do not use in the following places: places with dust, oily smoke, conductive dust, corrosive gas, flammable gas; places exposed to high temperature, condensation, wind and rain; places with vibration or impact. Electric shock, fire, and misoperation can also cause product damage. 26 - 27 - 2. When processing screw holes and wiring, do not let iron filings or wire ends fall into the ventilation window of the programmable controller. It may cause fire, malfunction, or misoperation. 28 - 29 - 3. Please insert the connecting cable and display module accurately into the specified sockets. Poor contact may cause misoperation. 30 - 31 -(% class="box infomessage" %) 32 -((( 33 -**✎Note:** 34 - 35 -* To prevent the temperature from rising, do not install at the bottom, top or vertical direction.Be sure to install it horizontally on the wall as shown on the right. 36 -* Please leave a space of more than 50mm between the host and other equipment or structures.Try to avoid high-voltage lines, high-voltage equipment, and power equipment. 37 -))) 38 - 39 -== Wiring == 40 - 41 -The signal input and output lines of the programmable controller cannot pass through the same cable. 42 - 43 -In addition, signal input lines and output lines cannot pass through the same pipeline with other power lines and output lines, and cannot be bundled together. 44 - 45 -If implemented according to the above precautions, even if the input and output wiring is as long as 50 to 100m, there is almost no noise problem. But generally for safety, the wiring length should be within 20m. 46 - 47 -(% style="text-align:center" %) 48 -[[image:PLC Editor2.01 Program execution.WebHome@1652145475206-244.png||height="179" width="200" class="img-thumbnail"]] 49 - 50 -(% class="box infomessage" %) 51 -((( 52 -**✎Note:** 53 - 54 -* The installation and wiring must be performed when the external power supply is cut off. Otherwise, it may cause electric shock or product damage. 55 -* After installation and wiring, etc., the terminal cover must be installed before power-on operation to avoid electric shock. 56 -))) 57 - 58 -(% class="table-bordered" %) 59 -|=(% scope="row" %)((( 60 - 61 - 62 - 63 -[[image:PLC Editor2.01 Program execution.WebHome@1652145267405-613.png||class="img-thumbnail"]] 64 - 65 -**Danger** 66 -)))|((( 67 -(% style="text-align:center" %) 68 -[[image:PLC Editor2.01 Program execution.WebHome@0-1.png||height="141" width="400" class="img-thumbnail"]] 69 - 70 -It is very dangerous to close the positive and negative contactors at the same time. For loads like this, in addition to the interlock set by the internal program of the programmable controller, the interlock shown above must also be set outside the programmable controller. 71 -))) 72 -|=((( 73 - [[image:PLC Editor2.01 Program execution.WebHome@1652145275238-798.png||height="45" width="50" class="img-thumbnail"]] 74 - 75 -**Attention** 76 -)))|Do not connect the empty terminal to the outside, otherwise the product will be damaged. 77 - 78 -Please connect the AC power supply to the dedicated terminal according to the content in the manual. 79 - 80 -If the AC power supply is connected to the DC input/output terminal or the DC power supply terminal, the programmable controller will be burnt out. 81 - 82 -Please do not supply power to the 24+ terminal of the basic unit from the external power supply, and to the empty terminal . Do not wire from the outside, otherwise the product will be damaged. 83 - 84 -Please ground the ground terminal of the basic unit according to the third method. But please do not share the ground with the strong current system. 85 - 86 -**Attached** 87 - 88 -The programmable controller will continue to work if there is an instantaneous power failure of less than 10ms. 89 - 90 -When the power is cut for a long time or the voltage is low, the programmable controller will stop working and the output will turn OFF, but once the power supply is restored, it will automatically restart. 91 - 92 -== Startup and maintenance == 93 - 94 -(% class="table-bordered" %) 95 -(% class="warning" %)|=**Danger** 96 -|((( 97 -Please do not touch the terminals when the power is on, otherwise it may cause electric shock or misoperation. 98 - 99 -Please clean and disassemble the terminal after the power is turned off. Performing it while the power is on may cause electric shock. 100 - 101 -Please read the manual thoroughly and fully confirm the safety before proceeding with program changes, forced output, RUN/STOP, etc. during machine operation. 102 - 103 -Operation errors can damage the machine and cause accidents. 104 -))) 105 - 106 -(% class="table-bordered" %) 107 -(% class="warning" %)|=**Caution** 108 -|((( 109 -Please do not disassemble or modify, otherwise it may cause malfunction, malfunction, fire. 110 - 111 -※For repair matters, please contact Fuzhou Wecon Electronic Technology Co., Ltd. 112 - 113 -After the power is turned off, perform the installation and disassembly of the extension cables and other connecting cables, otherwise it may cause malfunctions and malfunctions. 114 -))) 115 - 116 -== **Maintenance** == 117 - 118 -Regular inspection: Whether the programmable controller is equipped with consumables with a shorter life. 119 - 120 -For relay output type, if the output relay works abnormally at a high frequency or drives a large-capacity load, you must pay attention to its impact on the service life. 121 - 122 -Check with other equipment, please pay attention to the following points: 123 - 124 -* Whether there is an abnormal increase in the temperature inside the machine due to other heating elements or direct sunlight. 125 -* Whether dust or conductive dust has penetrated into the machine. 126 -* Whether there are loose wiring and terminals or other abnormalities 127 - 128 -= Scan structure = 129 - 130 130 The scan configuration of the CPU module is as follows. 131 131 132 132 (% style="text-align:center" %) 133 133 [[image:1-1.png||height="455" width="700" class="img-thumbnail"]] 134 134 135 -== Initialization == 8 +== **Initialization** == 136 136 137 137 The initialization based on the status of the CPU module is as follows. 138 138 ... ... @@ -147,7 +147,7 @@ 147 147 |Device initialization|√|×|√ 148 148 |Error clear|√|×|√ 149 149 150 -== Input and output point refresh == 23 +== **Input and output point refresh** == 151 151 152 152 Perform the following before starting program calculation. 153 153 ... ... @@ -161,11 +161,11 @@ 161 161 162 162 When performing a constant scan, the I/O refresh is performed after the waiting time of the constant scan. 163 163 164 -== Operation of the program == 37 +== **Operation of the program** == 165 165 166 166 According to the program setting, the execution starts from step 0 of each program to the END instruction. This program is called the main program. 167 167 168 -== END processing == 41 +== **END processing** == 169 169 170 170 Perform the following processing. 171 171 ... ... @@ -174,7 +174,7 @@ 174 174 * Communication processing 175 175 * Setting the value of special relay/special register (when the setting timing is END processing) 176 176 177 -= Scan time = 50 += **Scan time** = 178 178 179 179 The CPU module repeats the following processing, and the scan time is the total of the following processing and execution time. 180 180 ... ... @@ -183,7 +183,7 @@ 183 183 184 184 The initial scan time indicates the time including this processing. 185 185 186 -== Initial scan time == 59 +== **Initial scan time** == 187 187 188 188 It is the first scan time of the CPU module in RUN. 189 189 ... ... @@ -191,7 +191,7 @@ 191 191 192 192 The value stored in SD134 (initial scan time (ms unit)) and SD135 (initial scan time (s unit)). 193 193 194 -= The flow of each procedure = 67 += **The flow of each procedure** = 195 195 196 196 When the CPU module changes to the RUN state, the programs are executed in sequence according to the program execution type and execution sequence settings. 197 197 ... ... @@ -206,9 +206,9 @@ 206 206 207 207 When executing instructions that can be completed with multiple cycles (such as OUT T, RAMP, RS, etc.), they should be programmed in the scan program. If it is used in event execution type programs and mid-stage execution type programs, these instructions may not be executed in multiple scan cycles, causing actual results to be different from the ideal results. Therefore, unless events, interrupts and subroutines can be executed in each scan cycle. It is not recommended to use multi-cycle execution instructions in other situations. 208 208 209 -= Types of program execution = 82 += **Types of program execution** = 210 210 211 -== Scan execution program == 84 +== **Scan execution program** == 212 212 213 213 Each scan is executed only once from the next scan of the initial execution type program. 214 214 ... ... @@ -233,7 +233,7 @@ 233 233 (% style="text-align:center" %) 234 234 [[image:1-6.png||class="img-thumbnail"]] 235 235 236 -== Event execution program == 109 +== **Event execution program** == 237 237 238 238 It uses the event specified by the user as a condition to trigger the program to start execution. 239 239 ... ... @@ -335,7 +335,7 @@ 335 335 336 336 When "ON event" or "TIME event" is specified, if "Clear or not" is set to "Clear", the event program will not be executed in one scan cycle, and all the internal outputs (Y) and current value of timer (T) will all be cleared (except for the cumulative type and subroutine type T). If the time set by the TIME event is less than the scan period, it is equivalent to executing the TIME event every scan period. Even if the clear output is set, the output and timer data in the event program will not be cleared. 337 337 338 -== Interrupt execution program == 211 +== **Interrupt execution program** == 339 339 340 340 In the process of executing the scan program, the program that can interrupt the priority execution of the scan program is called an interrupt execution program. 341 341 ... ... @@ -704,7 +704,7 @@ 704 704 ON: Mask interrupt OFF: Enable interrupt 705 705 )))|0 706 706 707 -== Subroutine == 580 +== **Subroutine** == 708 708 709 709 During the execution of the scan program, the executed program can be called by the CALL instruction. 710 710 ... ... @@ -729,7 +729,7 @@ 729 729 1. The subroutine can be nested up to 32 levels. If the level exceeds 32 levels, a serious error will be reported and the Circuit program operation will be forcibly stopped. 730 730 1. Unlike the LX3V series mainframe, the subroutine in the LX5V series mainframe ends with the END instruction instead of SRET. 731 731 732 -== Positioning instructions == 605 +== **Positioning instructions** == 733 733 734 734 ~1. Event 735 735
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