A technical method for automatically testing the dead weight of a finishing mill loop

Abstract

The present invention discloses an automation system for the deadweight test process of a finishing rolling looper, comprising a looper and a control tool thereof. The control tool is Engineering Tool 4 software, which is newly program-designed. The control tool triggers action instructions through the PLC program of TC_MS024 in the Engineering Tool 4 software to control the action cylinder of the looper to extend or retract, thereby causing the looper to be lifted or lowered respectively. The present invention also discloses a technical method for automating the deadweight test process of a finishing rolling looper, which is achieved through the automation system. The present invention effectively combines automatic parameter setting and PLC program control to realize process automation, thereby achieving the purpose of automatically completing the deadweight test with one click, effectively improving labor efficiency, accurately completing projects, and reducing the completion time of the deadweight test and the probability of human process operation errors.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of finishing rolling control, more particularly to a finishing rolling loop self-weight testing process automation system and a technical method for realizing finishing rolling loop self-weight testing process automation by using the system. BACKGROUND

[0002] In the rolling process of a hot continuous rolling finishing rolling mill, the loop precision directly affects the rolling stability and product precision. In actual production, the loop roller weight is not constant, and may change due to equipment wear and tear or replacement, so that the self-weight coefficient becomes larger or smaller, which may cause the strip to deviate, narrow, break, tail off, and generate scrap, etc. in the rolling process, resulting in quality or economic losses.

[0003] The original loop self-weight testing needs to be manually short-circuited step by step in the program, and the whole process needs to be operated 19 times in the program and screen, and the production and electrical personnel need to track on site, and it is estimated that it takes 4-5 minutes to complete the whole process. In some specific cases, the short-circuit signal cannot be cancelled in time, which will affect the subsequent normal production. SUMMARY

[0004] The purpose of the present application is to provide a technical method for finishing rolling loop self-weight testing process automation, which effectively combines parameter automatic setting and PLC program control to realize process automation and achieve one-key automatic completion of self-weight testing.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] In a first aspect, the present application provides a finishing mill loop self-weight test process automation system, comprising a loop and a control tool thereof, the loop comprising a frame (1), a rotating mechanism (2), a loop roller (3), a pressure measuring head (4), and an action oil cylinder (5), the rotating mechanism (2) being fixedly connected to an upper portion of the frame (1), the action oil cylinder (5) being shaft-connected to a lower portion of the frame (1), the loop roller (3) being installed on the rotating mechanism (2), and the loop roller (3) being provided with the pressure measuring head (4); the control tool is an Engineering Tool 4 software, the Engineering Tool 4 software is newly programmed, a TC_MS024 program is added under an original 014N_NV4101A (LPPLC_LR_TCSC) (NV STATION) station of the Engineering Tool 4 software and under a 06 (PU866):TCSC directory, the 06 (PU866):TCSC directory is composed of the following parts: original programs TC_MS011, TC_MS012, TC_MS013, TC_MS021, TC_MS022, TC_MS023, and the newly added program TC_MS024; the six original programs TC_MS011-TC_MS023 independently control six loops respectively, after the newly added program TC_MS024, a loop angle judgment control model, a process automation running model, a program running alarm model, and a program termination model are established in the TC_MS024, the newly added program TC_MS024 short-circuits a "loop tension calculation ON condition" signal in the six programs TC_MS011-TC_MS023 through a network variable, and necessary interlocking conditions for program running are met.

[0007] The 014N_NV4101A station is mainly composed of the following parts:

[0008] Program Name Explanation Remark TC_MS011 L1 Tension Calcalation (PT) Original Program TC_MS012 L2 Tension Calcalation (PT) Original Program TC_MS013 L3 Tension Calcalation (PT) Original Program TC_MS021 L4 Tension Calculation (PT / LC) Original Program TC_MS022 L5 Tension Calculation (PT / LC) Original Program TC_MS023 L6 Tension Calculation (PT / LC) Original Program TC_MS024 LP 1-6 AUTO WEIGHT CALCALATION New Program

[0009] The control tool triggers an action instruction through a PLC program of the TC_MS024 in the Engineering Tool 4 software, the instruction is transmitted to a valve box in the field through an I / O disk cabinet, and then to an action oil cylinder of the loop, the action oil cylinder is executed to extend or retract, and the loop is respectively lifted or lowered.

[0010] In a second aspect, the present application provides a technical method for finishing mill loop self-weight test process automation, which is realized through the finishing mill loop self-weight test process automation system.

[0011] (1) The loop self-weight test program is started through a network variable added in the TC_MS024;

[0012] (2) TC_MS024 program automatically writes in the preset loop target angle and loop action rate value;

[0013] (3) Trigger the automatic position control APC of the loop to start;

[0014] (4) The loop is given a torque according to the preset fixed angle in the program;

[0015] (5) Control the opening degree of the action oil cylinder servo valve of the loop;

[0016] (6) Drive the action of the loop action oil cylinder: if the loop angle detection deviation does not exceed 0.1 during the process, i.e. the target angle precision range is reached; otherwise, the loop torque integral compensation will be activated to superimpose the action oil cylinder servo valve given opening degree, drive the loop action oil cylinder action adjustment, until the loop angle detection deviation does not exceed 0.1.

[0017] Further, the self-weight test program comprises the following steps:

[0018] (1) Program starting point: trigger the loop self-weight test program running signal, enter S1;

[0019] (2) S1, loop angle judgment: if the loop angle is ≤11°, jump to execute S4; if the loop angle is >11°, execute S2;

[0020] (3) S2, loop lowering instruction: trigger the loop lowering action through the network variable, after receiving the loop lowering in-place signal, execute S3;

[0021] (4) S3, rack automatic mode instruction: trigger the mode switching action through the network variable, so that the rack mode is switched to the automatic mode, after receiving the rack automatic mode in-place signal, execute S4;

[0022] (5) S4, loop manual mode instruction: trigger the instruction action through the network variable, so that the loop is in manual mode, after receiving the loop manual mode in-place signal, execute S5;

[0023] (6) S5, loop cooling water manual mode instruction: trigger the instruction action through the network variable, so that the loop cooling water is in manual mode, after receiving the loop cooling water mode in-place signal, execute S6;

[0024] (7) S6, loop cooling water opening instruction: trigger the instruction action through the network variable, the loop cooling water is in the open state, after receiving the loop cooling water opening in-place signal, execute S7;

[0025] (8) S7, loop test mode open instruction: through the network variable trigger instruction action, make the loop test mode in the state of putting into use, after receiving the loop test mode open to the bit signal, execute S8;

[0026] (9) S8, input the angle data of rising: automatically set the loop angle parameter, program set 61 ° value to TARGET POSITION, automatically set 1 ° / s to the whole process of the loop rising speed slope, after receiving the angle input completion signal and the rate input completion signal, execute S9;

[0027] (10) S9, angle rising APC: through the network variable trigger instruction action, the loop starts to rise at the rate of 1 ° / s, after the command trigger of the loop APC, wait to execute S10;

[0028] (11) S10, whether the loop angle rising reaches the set value: if ΔθLiup-60<0, the running time exceeds 60 s, the loop angle does not reach the set value signal, execute S11 module, the rising timeout alarm signal is connected, output the rising timeout alarm signal for alarm; if ΔθLiup-60≥0, the running time does not exceed 60 s, the loop angle reaches the set value signal, then execute S12;

[0029] (12) S12, input the angle data of falling: automatically set the loop angle parameter, program set 9 ° value to TARGET POSITION, automatically set 1 ° / s to the whole process of the loop falling speed slope, after receiving the angle input completion signal and the rate input completion signal, execute S13;

[0030] (13) S13, angle falling APC: through the network variable trigger instruction action, the loop starts to fall at the rate of 1 ° / s, after the command trigger of the loop APC, wait to execute S14;

[0031] (14) S14, whether the loop angle falling reaches the set value: if ΔθLidw-11≥0.1, the running time exceeds 60 s, the loop angle does not reach the set value signal, execute S15 module, the falling timeout alarm signal is connected, output the falling timeout alarm signal for alarm; if ΔθLidw-11<0.1, the running time does not exceed 60 s, the loop angle reaches the set value signal, then execute S16;

[0032] (15) S16, loop automatic mode instruction: through the network variable trigger instruction action, make the loop in the automatic mode, after receiving the loop automatic mode to the bit signal, execute S17;

[0033] (16) S17, automatic instruction of loop cooling water: trigger instruction action through network variable, so that the loop cooling water is in automatic mode, after receiving the automatic loop cooling water in place signal, execute S_end;

[0034] (17) S_end, automatic completion of loop: output a completion signal, use the on value connected by the signal to interrupt the program running interlock signal, output a DUMMY signal by emptying the program, and clear the start count value.

[0035] Compared with the prior art, the present application has the beneficial effects that:

[0036] The present application adds TC_MS024 program to short circuit the "loop tension calculation ON condition" signal in TC_MS011-TC_MS023 six programs through network variables, meets the necessary interlocking condition of program running, establishes a loop angle judgment control model, a process automation running model and a program running alarm model, the loop angle judgment control model judges the current loop angle value, when the loop angle exceeds the specified value or range, the loop angle judgment control model is started to adjust the loop angle, to correct the loop angle deviation, so that it is within the specified range. The present application is a one-key automatic control, which effectively combines parameter automatic setting and PLC program control, realizes process automation, achieves the purpose of one-key automatic completion of self-weight test, can effectively improve labor efficiency, accurately complete the project, and reduce the self-weight test completion time and the probability of personnel process operation error. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is the schematic diagram of the loop angle action principle of the present application;

[0038] Figure 2 is the mutual control relationship diagram among the programs of the present application;

[0039] Figure 3 is the program control loop action flowchart of the present application;

[0040] Figure 4 is the loop angle judgment control model diagram;

[0041] Figure 5 is the program running alarm model diagram of the present application;

[0042] Figure 6 is the program termination module diagram of the present application;

[0043] Figure 7 is the technical method flowchart of process automation of the present application;

[0044] Wherein, 1-pavilion, 2-rotating mechanism, 3-looper roller, 4-pressure head, 5-action oil cylinder. DETAILED DESCRIPTION

[0045] The specific embodiments of the technical solutions of the present application are further described below in combination with the drawings, and these embodiments are for detailed description of the technical solutions of the present application, but not for limiting the technical solutions of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0046] In an embodiment of the present application, as shown in Figure 1 The looper includes a pavilion (1), a rotating mechanism (2), a looper roller (3), a pressure head (4), and an action oil cylinder (5). The rotating mechanism (2) is fixedly connected to the upper part of the pavilion (1), the action oil cylinder (5) is connected to the lower part of the pavilion (1), the looper roller (3) is installed on the rotating mechanism (2), and the looper roller (3) is installed with the pressure head (4).

[0047] The principle is that the action oil cylinder is extended, the looper is lifted, the action oil cylinder is retracted, and the looper is lowered.

[0048] In an embodiment of the present application, the looper angle judgment control model includes the following steps:

[0049] As shown in FIG. 4, the looper angle judgment control model is established. When the program runs, the looper angle position at this time is first judged. If the looper angle exceeds the specified value 11°, the looper angle judgment control model is started, and the looper angle adjustment stage is entered. The looper is adjusted to below 11°, and then the corresponding rack group mode is switched to the automatic mode.

[0050] In an embodiment of the present application, the program running alarm model includes the following steps:

[0051] As Figure 5As shown in the figure, when the loop angle is controlled at 61°, if ΔθLiup-60 is less than 0, the running time exceeds 60s, the loop angle does not reach the rising set value signal, and the rising timeout alarm signal is connected through the S11 module, and the rising timeout alarm signal is output to alarm, and the program forms a self-locking. After a 0.5s power-off delay, the rising timeout alarm circuit is interrupted, so that the program can be executed normally next time. When the loop angle is controlled at 9°, if ΔθLidw-11 is greater than or equal to 0.1, the running time exceeds 60s, the loop angle does not reach the falling set value signal, and the falling timeout alarm signal is connected through the S15 module, and the falling timeout alarm signal is output to alarm, and the program forms a self-locking. After a 0.5s power-off delay, the falling timeout alarm circuit is interrupted, so that the program can be executed normally next time.

[0052] In one embodiment of the present invention, the program termination module includes the following steps:

[0053] like Figure 6 As shown, a loop automatic completion signal is set at the end position of the PLC program segment, and the inverted value of the signal is used to interrupt the program running interlock signal, the program termination module signal is turned on, S0 is turned on, and then a DUMMY signal is output by setting the program module to zero to clear the count value of S0 to prevent the module S0 from being in infinite counting, so that the loop deadweight test program can be normally enabled next time.

[0054] In this embodiment, if an exception occurs, the operator can manually intervene and switch the group mode to automatic mode to terminate the program operation chain. Manual intervention takes precedence. The mode can be switched to automatic mode manually through the group mode screen. The automatic mode signal is triggered, and the "rolling mill group mode - automatic mode" inversion signal in the looper automatic operation program operation chain is disconnected, the automatic operation program operation chain is interrupted, and the program operation is terminated.

[0055] Example 1

[0056] The present invention provides an automated system for the deadweight testing process of a finishing rolling loop, comprising a loop and a control tool thereof, wherein the loop comprises a gate (1), a rotating mechanism (2), a loop roller (3), a pressure measuring head (4), and an actuating oil cylinder (5); the rotating mechanism (2) is fixedly connected to the upper part of the gate (1); the actuating oil cylinder (5) is axially connected to the lower part of the gate (1); the loop roller (3) is mounted on the rotating mechanism (2); and the pressure measuring head (4) is mounted on the loop roller (3);

[0057] The control tool is Engineering Tool 4 software, the Engineering Tool 4 software is newly programmed, a TC_MS024 program is added under the original 014N_NV4101A (LPPLC_LR_TCSC) (NVSTATION) station 06 (PU866): TCSC directory of the Engineering Tool 4 software, the 06 (PU866): TCSC directory is composed of the following parts: original programs TC_MS011, TC_MS012, TC_MS013, TC_MS021, TC_MS022, TC_MS023 and the newly added program TC_MS024; the original programs TC_MS011-TC_MS023 six programs independently control six looper respectively, after the newly added program TC_MS024, a looper angle judgment control model, a process automation operation model are established in the TC_MS024, a program operation alarm model and a program termination model are established, the newly added program TC_MS024 is short-circuited to the "looper tension calculation ON condition" signal in the six programs TC_MS011-TC_MS023 through network variables (such as Figure 2 The 014N_NV4101A station is mainly composed of the following parts:

[0058] Program Name Explanation Remark TC_MS011 L1 Tension Calcalation (PT) Original Program TC_MS012 L2 Tension Calcalation (PT) Original Program TC_MS013 L3 Tension Calcalation (PT) Original Program TC_MS021 L4 Tension Calculation (PT / LC) Original Program TC_MS022 L5 Tension Calculation (PT / LC) Original Program TC_MS023 L6 Tension Calculation (PT / LC) Original Program TC_MS024 LP 1-6 AUTO WEIGHT CALCALATION New Program

[0059] The control tool triggers the action instruction through the PLC program of TC_MS024 in the Engineering Tool 4 software, the instruction is transmitted to the valve box in the field through the I / O disk cabinet, and then to the action oil cylinder of the looper, the action oil cylinder executes extension or retraction, which respectively causes the looper to lift or drop.

[0060] The application provides a kind of precision rolling looper self weight test process automation technical method, and the precision rolling looper self weight test process automation system is realized (such as Figure 3 The application provides a kind of precision rolling looper self weight test process automation technical method, and the precision rolling looper self weight test process automation system is realized (such as

[0061] 1) the network variable of the newly added TC_MS024 triggers the looper self weight test program to start;

[0062] 2) TC_MS024 program is automatically written into looper target angle and looper action rate value according to pre-setting;

[0063] 3) trigger looper automatic position control APC to start;

[0064] 4) looper is given force according to the fixed angle of pre-setting in the program corresponding to looper torque;

[0065] 5) control the opening degree of the action oil cylinder servo valve of the looper.

[0066] 6) Drive the loop action oil cylinder action: if the loop angle detection deviation in the process is not more than 0.1, i.e. the target angle precision range is reached; otherwise, the loop torque integral compensation is activated to superimpose the action oil cylinder servo valve given opening degree, drive the loop action oil cylinder action adjustment, until the loop angle detection deviation is not more than 0.1.

[0067] Table 1 pre-set target angle and corresponding torque

[0068] 15° 17.5° 20° 22.5° 25° 30° 35° 40° 50° 60° LP1 5239.62 5186.3 5115.32 5025.04 4908.39 4688.61 4409.70 4147.87 3564.79 2928.93 LP2 4961.86 4878.33 4797.42 4711.37 4613.63 4411.10 4137.92 3861.96 3260.01 2544.00 LP3 5026.98 4945.33 4846.30 4777.96 4677.90 4475.97 4220.13 3929.51 3295.43 2577.64 LP4 5591.46 5522.91 5433.01 5342.93 5230.63 4976.09 4699.22 4388.95 3675.85 2866.19 LP5 5535.35 5447.41 5369.56 5268.97 5157.04 4916.19 4636.53 4325.28 3599.21 2852.42 LP6 5896.63 5826.86 5739.55 5645.43 5541.70 5301.48 5040.91 4720.77 3982.02 3130.55

[0069] The self-weight test program running steps are as follows (as shown in Figure 7 ):

[0070] (1) Program starting point: trigger the loop self-weight test program running signal, enter S1;

[0071] (2) S1, loop angle judgment: if the loop angle is less than or equal to 11°, jump to execute S4; if the loop angle is greater than 11°, execute S2;

[0072] (3) S2, loop descending instruction: trigger the loop descending action through the network variable, after receiving the loop descending in-place signal, execute S3;

[0073] (4) S3, rack automatic mode instruction: trigger the mode switching action through the network variable, so that the rack mode is switched to the automatic mode, after receiving the rack automatic mode in-place signal, execute S4;

[0074] (5) S4, loop manual mode instruction: trigger the instruction action through the network variable, so that the loop is in the manual mode, after receiving the loop manual mode in-place signal, execute S5;

[0075] (6) S5, loop cooling water manual mode instruction: trigger the instruction action through the network variable, so that the loop cooling water is in the manual mode, after receiving the loop cooling water mode in-place signal, execute S6;

[0076] (7) S6, loop cooling water opening instruction: trigger the instruction action through the network variable, the loop cooling water is in the open state, after receiving the loop cooling water opening in-place signal, execute S7;

[0077] (8) S7, loop test mode opening instruction: trigger the instruction action through the network variable, so that the loop test mode is in the commissioning state, after receiving the loop test mode opening in-place signal, execute S8;

[0078] (9) S8, input the angle data of the loop: the loop angle parameter is automatically set, the program sets 61° value to the TARGET POSITION, the loop speed slope is automatically set 1° / s, after the angle input completion signal and the speed input completion signal are obtained, S9 is executed;

[0079] (10) S9, angle up APC: the instruction action is triggered by the network variable, the loop starts to rise at the speed of 1° / s, after the command trigger of the loop APC, S10 is executed;

[0080] (11) S10, whether the loop angle rises to the position judging module: if ΔθLiup-60<0, the running time exceeds 60s, the loop angle does not reach the rising set value signal, S11 module is executed, the rising overtime alarm signal is connected, the rising overtime alarm signal is outputted to alarm; if ΔθLiup-60≥0, the running time does not exceed 60s, the loop angle reaches the rising set value signal, S12 is executed;

[0081] (12) S12, input the angle data of the loop: the loop angle parameter is automatically set, the program sets 9° value to the TARGET POSITION, the loop speed slope is automatically set 1° / s, after the angle input completion signal and the speed input completion signal are obtained, S13 is executed;

[0082] (13) S13, angle down APC: the instruction action is triggered by the network variable, the loop starts to fall at the speed of 1° / s, after the command trigger of the loop APC, S14 is executed;

[0083] (14) S14, whether the loop angle falls to the position judging module: if ΔθLidw-11≥0.1, the running time exceeds 60s, the loop angle does not reach the falling set value signal, S15 module is executed, the falling overtime alarm signal is connected, the falling overtime alarm signal is outputted to alarm; if ΔθLidw-11<0.1, the running time does not exceed 60s, the loop angle reaches the falling set value signal, S16 is executed;

[0084] (15) S16, the loop automatic mode instruction: the instruction action is triggered by the network variable, so that the loop is in the automatic mode, after the loop automatic mode in place signal is received, S17 is executed;

[0085] (16) S17, the loop cooling water automatic instruction: the instruction action is triggered by the network variable, so that the loop cooling water is in the automatic mode, after the loop cooling water automatic in place signal is received, S_end is executed;

[0086] (17) S_end, automatic completion of the loop: outputs a completion signal, which is used to interrupt the program run interlock signal by taking the inverse value, and outputs a DUMMY signal by clearing the program, and clears the start count value.

[0087] While the embodiments of the present description have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the present description, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A technical method for automating the deadweight test process of a finishing rolling looper, characterized in that: The automatic system of finishing rolling loop weight test process is realized as follows: (1) the loop weight test program is triggered to start through the newly added network variable TC_MS024; (2) the TC_MS024 program automatically writes the loop target angle and loop action rate value according to the pre-set value; (3) the loop automatic position control APC is triggered to start; (4) the loop is given a loop torque corresponding to the target angle pre-set in the program; (5) the servo valve of the action cylinder of the loop is controlled to give a given opening degree; (6) the loop action cylinder is driven to act: if the loop angle detection deviation does not exceed 0.1 during the process, the target angle accuracy range is reached; otherwise, the loop torque integral compensation is activated to The superimposed action cylinder servo valve is given an opening degree, and the action adjustment of the loop action cylinder is driven until the loop angle detection deviation does not exceed 0.1; the finishing rolling loop deadweight test process automation system includes a loop and its control tool, the loop includes a door arch (1), a rotating mechanism (2), a loop roller (3), a pressure head (4), and an action cylinder (5), the rotating mechanism (2) is fixedly connected to the upper part of the door arch (1), the action cylinder (5) is axially connected to the lower part of the door arch (1), the loop roller (3) is installed on the rotating mechanism (2), and the pressure head (4) is installed on the loop roller (3); the control tool is Engineering Tool 4 software, and Engineering Tool 4 software has been newly programmed. 4 software, a new TC_MS024 program is added to the 06 (PU866): TCSC directory under the original 014N_NV4101A (LPPLC_LR_TCSC) (NVSTATION) station. The 06 (PU866): TCSC directory consists of the following parts: original programs TC_MS011, TC_MS012, TC_MS013, TC_MS021, TC_MS022, TC_MS023 and the newly added program TC_MS024; the six original programs TC_MS011 to TC_MS023 independently control six loops. After the newly added program TC_MS024, a loop angle judgment control model, a process automation operation model, a program operation alarm model and a program termination model are established in the TC_MS024. The newly added program TC_MS024 short-circuits the "loop tension calculation ON condition" signal in the six programs TC_MS011 to TC_MS023 through network variables to meet the necessary interlocking conditions for program operation; the control tool is controlled by Engineering The PLC program for TC_MS024 in the Tool 4 software triggers an action command, which is transmitted through the I / O panel to the valve box on site and then to the looper's actuating cylinder. The cylinder extends or retracts, causing the looper to raise or lower, respectively.

2. The technical method for automating the deadweight test process of the finishing rolling looper according to claim 1 is characterized in that: The deadweight test program includes the following steps: (1) Program starting point: trigger the loop deadweight test program running signal and enter S1; (2) S1, loop angle judgment: if the loop angle is ≤11°, jump to execute S4; if the loop angle is >11°, execute S2; (3) S2, loop descent instruction: trigger the loop descent action through the network variable, and execute S3 after receiving the loop descent position signal; (4) S3, rack automatic mode instruction: trigger the mode switching action through the network variable, so that the rack mode switches to the automatic mode, and execute S4 after receiving the rack automatic mode position signal; (5) S4, loop manual mode instruction: trigger the instruction action through the network variable, so that the loop is in manual mode, and execute S4 after receiving the loop manual mode signal. After the dynamic mode is in place signal, execute S5; (6) S5, manual mode instruction of the looper cooling water: trigger the instruction action through the network variable, so that the looper cooling water is in manual mode. After receiving the looper cooling water mode in place signal, execute S6; (7) S6, looper cooling water opening instruction: trigger the instruction action through the network variable, the looper cooling water is in the open state. After receiving the looper cooling water opening in place signal, execute S7; (8) S7, looper test mode opening instruction: trigger the instruction action through the network variable, so that the looper test mode is in the commissioning state. After receiving the looper test mode opening in place signal, execute S8; (9) S8, input rising angle data: the looper angle parameter is automatically set, and the program gives TARGET POSITION is set to 61°, and the slope of the looper's rising speed is automatically set to 1° / s throughout the process. After the angle input completion signal and the rate input completion signal are obtained at the same time, S9 is executed; (10) S9, angle rise APC: the instruction action is triggered by the network variable, and the looper starts to rise at a rate of 1° / s. When the looper APC command is triggered, wait for execution of S10; (11) S10, whether the looper angle rises in place judgment module: if ΔθLiup-60<0, the running time exceeds 60s, and the looper angle does not reach the rising set value signal is turned on, the S11 module is executed, the rising timeout alarm signal is turned on, and the rising timeout alarm signal is output to alarm; if ΔθLiup-60≥0 , the running time does not exceed 60s, the loop angle reaches the rising setting value signal is connected, then execute S12; (12) S12, input the descending angle data: the loop angle parameter is automatically set, the program sets the TARGETPOSITION value to 9°, and the loop descending speed slope is automatically set to 1° / s throughout the process. After the angle input completion signal and the rate input completion signal are obtained at the same time, execute S13; (13) S13, angle descending APC: trigger the instruction action through the network variable, the loop begins to descend at a rate of 1° / s. When the loop APC command is triggered, wait for execution of S14; (14) S14, loop angle descending judgment module: if ΔθLidw-11≥0.

1. If the running time exceeds 60s and the loop angle does not reach the lowering setting value signal, the S15 module will be executed, the lowering timeout alarm signal will be turned on, and the lowering timeout alarm signal will be output to alarm; if ΔθLidw-11 is less than 0.1, the running time does not exceed 60s, the loop angle reaches the lowering setting value signal, then S16 will be executed; (15) S16, loop automatic mode instruction: trigger the instruction action through the network variable to put the loop in automatic mode, and after receiving the loop automatic mode in place signal, S17 will be executed; (16) S17, loop cooling water automatic instruction: trigger the instruction action through the network variable to put the loop cooling water in automatic mode, and after receiving the loop cooling water automatic in place signal, S_end will be executed; (17) S_end, loop automatic completion: output a completion signal, use the inverted value of the signal to interrupt the program running interlock signal, and output a DUMMY signal by setting the program to clear the starting count value.

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