Changes for page 11 PID Control Instruction
Last modified by Iris on 2025/10/22 16:39
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... ... @@ -31,17 +31,18 @@ 31 31 32 32 This instruction is to complete the PID operation and is used to control the parameters of the closed-loop control system. PID control has a wide range of applications in mechanical equipment, pneumatic equipment, constant pressure water supply and electronic equipment, etc. among them: 33 33 34 -[[image:11_html_1c6bb88c06ac24cf.png]] is the target value of PID control; 34 +[[image:11_html_1c6bb88c06ac24cf.png||height="18" width="32"]] is the target value of PID control; 35 35 36 -[[image:11_html_fb5122fb6e3a43d5.png]] is the measured feedback value; 36 +[[image:11_html_fb5122fb6e3a43d5.png||height="19" width="34"]] is the measured feedback value; 37 37 38 -[[image:11_html_6c3fad4a32a3db43.png]] The starting address of the buffer area for setting parameters required for PID operation and saving intermediate results, occupies a total of 26 variable units in the subsequent addresses, the value range is D0 to D7974, it is best to specify the power failure retention area, which will remain after the power is OFF Set the value, otherwise the buffer area needs to be assigned value before starting the operation for the first time. The function and parameter description of each unit are described in this section; 38 +[[image:11_html_6c3fad4a32a3db43.png||height="19" width="34"]] The starting address of the buffer area for setting parameters required for PID operation and saving intermediate results, occupies a total of 26 variable units in the subsequent addresses, the value range is D0 to D7974, it is best to specify the power failure retention area, which will remain after the power is OFF Set the value, otherwise the buffer area needs to be assigned value before starting the operation for the first time. The function and parameter description of each unit are described in this section; 39 39 40 -[[image:11_html_b126b1b2673dc1f4.png]] is the storage unit of the PID calculation result. Please designate [[image:11_html_d47cd1f59b766ed3.png]] as a non-battery holding area, otherwise it needs to be initialized and cleared before starting the calculation for the first time. 40 +[[image:11_html_b126b1b2673dc1f4.png||height="22" width="39"]] is the storage unit of the PID calculation result. Please designate [[image:11_html_d47cd1f59b766ed3.png||height="24" width="47"]] as a non-battery holding area, otherwise it needs to be initialized and cleared before starting the calculation for the first time. 41 41 42 42 **Programming example** 43 43 44 -[[image:1758108900843-990.png]] 44 +(% style="text-align:center" %) 45 +[[image:1758108900843-990.png||height="24" width="396"]] 45 45 46 46 The parameter description is as follows: 47 47 ... ... @@ -51,34 +51,34 @@ 51 51 52 52 The D130 unit is used to store the calculated control output value to control the execution of the action. 53 53 54 -The function and setting method of the parameter value of each unit about starting of [[image:11_html_6c3fad4a32a3db43.png]] are described in the following table: 55 +The function and setting method of the parameter value of each unit about starting of [[image:11_html_6c3fad4a32a3db43.png||height="27" width="48"]] are described in the following table: 55 55 56 56 |**Unit**|**Features**|**Setting instructions** 57 -|[[image:11_html_6c3fad4a32a3db43.png]]|Sampling time (TS)|The setting range is 1 to 32767 (ms), but it needs to be greater than the PLC program scan period 58 -|[[image:11_html_6c3fad4a32a3db43.png]] +1|Action direction (ACT)|((( 58 +|[[image:11_html_6c3fad4a32a3db43.png||height="24" width="43"]]|Sampling time (TS)|The setting range is 1 to 32767 (ms), but it needs to be greater than the PLC program scan period 59 +|[[image:11_html_6c3fad4a32a3db43.png||height="22" width="39"]] +1|Action direction (ACT)|((( 59 59 bit0: 0 = positive action; 1 = reverse action bit3: 0 = unidirectional; 1 = bidirectional 60 60 61 61 bit4: 0 = auto-tuning does not work; 1 = auto-tuning is executed, others cannot be used. 62 62 ))) 63 -|[[image:11_html_6c3fad4a32a3db43.png]] +2|Maximum ascent rate (DeltaT)|Setting range 0 to 32000 is the threshold of integral increment 64 -|[[image:11_html_6c3fad4a32a3db43.png]] +3|Proportional gain (Kp)|Setting range 0 to 32767, note that this value is enlarged by 256 times, the actual value is Kp/256 65 -|[[image:11_html_6c3fad4a32a3db43.png]] +4|Integral gain (Ki)|Setting range 0 to 32767, Ki=16384Ts/Ti, Ti is the integral time 66 -|[[image:11_html_6c3fad4a32a3db43.png]] +5|Differential gain (Kd)|Setting range 0 to 32767, Kd≈Td/Ts, Td is the derivative time 67 -|[[image:11_html_6c3fad4a32a3db43.png]] +6|Filtering (C0)|Setting range 0 to 1023, integral part filtering 68 -|[[image:11_html_6c3fad4a32a3db43.png]] +7|Output lower limit|((( 64 +|[[image:11_html_6c3fad4a32a3db43.png||height="24" width="43"]] +2|Maximum ascent rate (DeltaT)|Setting range 0 to 32000 is the threshold of integral increment 65 +|[[image:11_html_6c3fad4a32a3db43.png||height="24" width="43"]] +3|Proportional gain (Kp)|Setting range 0 to 32767, note that this value is enlarged by 256 times, the actual value is Kp/256 66 +|[[image:11_html_6c3fad4a32a3db43.png||height="24" width="43"]] +4|Integral gain (Ki)|Setting range 0 to 32767, Ki=16384Ts/Ti, Ti is the integral time 67 +|[[image:11_html_6c3fad4a32a3db43.png||height="23" width="41"]] +5|Differential gain (Kd)|Setting range 0 to 32767, Kd≈Td/Ts, Td is the derivative time 68 +|[[image:11_html_6c3fad4a32a3db43.png||height="23" width="41"]] +6|Filtering (C0)|Setting range 0 to 1023, integral part filtering 69 +|[[image:11_html_6c3fad4a32a3db43.png||height="24" width="43"]] +7|Output lower limit|((( 69 69 Recommended setting range -2000 to 2000 70 70 71 71 {{id name="OLE_LINK630"/}}When bit3 of S3+1=0, set to 0; When bit3 of S3+1=1, set to -2000; 72 72 ))) 73 -|[[image:11_html_6c3fad4a32a3db43.png]] +8|Output upper limit|Recommended setting value 2000 74 -|[[image:11_html_6c3fad4a32a3db43.png]] +9|Reserved|Reserved 74 +|[[image:11_html_6c3fad4a32a3db43.png||height="23" width="41"]] +8|Output upper limit|Recommended setting value 2000 75 +|[[image:11_html_6c3fad4a32a3db43.png||height="25" width="44"]] +9|Reserved|Reserved 75 75 |︙|︙|︙ 76 -|[[image:11_html_6c3fad4a32a3db43.png]] +25|Reserved|Reserved 77 +|[[image:11_html_6c3fad4a32a3db43.png||height="22" width="39"]] +25|Reserved|Reserved 77 77 78 78 **Auto tuning example** 79 79 80 80 (% style="text-align:center" %) 81 -[[image:11_html_c64303b9c6a47ae9.png||class="img-thumbnail"]] 82 +[[image:11_html_c64303b9c6a47ae9.png||height="583" width="567" class="img-thumbnail"]] 82 82 83 83 **✎Note:** 84 84 ... ... @@ -158,7 +158,7 @@ 158 158 |4D81H|Input filter constant (α) is out of range (α<0 or α>1023) 159 159 |4D82H|The maximum ascent rate (△//T//) is out of range.(△//T//<0 or △//T//>1023) 160 160 |4D86H|The sampling time (Ts) is less than the operation cycle.(T//s//<Scanning cycle) 161 -|4D87H|The proportional gain (K//p//) is out of range.(K//p//<1 or K//p//>32000) 162 +|4D87H|The proportional gain (K//p//) is out of range.(K//p//<1 or K//p//>32000) 162 162 |4D88H|The integral time constant (Ti) is out of range.(K//i//<0 or K//i//>3600) 163 163 |4D89H|The differential time constant (T//d//) is out of range.(K//d//<0 or K//d//>1000) 164 164 |4D90H|The upper limit of CCPID output is less than the lower limit. ... ... @@ -315,7 +315,7 @@ 315 315 **Content, range and data type** 316 316 317 317 |**Name**|**Features**|**Bits (bits)**|**Whether pulse type**|**Instruction format**|**Step count** 318 -|CCPID|PID Operation|16|No|CCPID [[image:11_html_253eb1176b58e989.png]] [[image:11_html_80fccb1046bf8776.png]] [[image:11_html_8760537828f7beaf.png]] [[image:11_html_8b4fbd61f8ea9808.png]]|9 319 +|CCPID|PID Operation|16|No|CCPID [[image:11_html_253eb1176b58e989.png||height="23" width="44"]] [[image:11_html_80fccb1046bf8776.png||height="25" width="44"]] [[image:11_html_8760537828f7beaf.png||height="26" width="49"]] [[image:11_html_8b4fbd61f8ea9808.png||height="27" width="51"]]|9 319 319 320 320 |(% rowspan="2" %)**Instruction**|(% rowspan="2" %)**Parameter**|(% colspan="3" %)**Devices**|**Offset modification**|**Pulse extension** 321 321 |**D**|**R**|**SD**|**[D]**|**XXP** ... ... @@ -614,7 +614,152 @@ 614 614 (% style="text-align:center" %) 615 615 [[image:11_html_74a7527eace55103.gif||class="img-thumbnail"]] 616 616 618 +== ** CCPIN_SHT operation** == 617 617 620 +**CCPIN_SHT** 621 + 622 +This instruction is used to perform PID control that changes the output value according to the variation of the input. 623 + 624 +-[CCPID_SHT (s1) (s2) (s3) (d)] 625 + 626 +**Content, range and data type** 627 + 628 +|**Parameter**|**Content**|**Range**|**Data type**|**Data type (label)** 629 +|(s1)|The device number that stores the target value (SV)|-32767 to 32767|Signed BIN 16 bit|ANY16 630 +|(s2)|The device number that stores the measured value (SV)|-32767 to 32767|Signed BIN 16 bit|ANY16 631 +|(s3)|The device number that stores parameters|1 to 32767|Signed BIN 16 bit|ANY16 632 +|(d)|The device number that stores the output value (SV)|-32767 to 32767|Signed BIN 16 bit|ANY16 633 + 634 +**Device used** 635 + 636 +|(% rowspan="2" %)**Instruction**|(% rowspan="2" %)**Parameter**|(% colspan="3" %)**Devices**|((( 637 +**Offset** 638 + 639 +**modification** 640 +)))|((( 641 +**Pulse** 642 + 643 +**extension** 644 +))) 645 +|**D**|**R**|**SD**|**[D]**|**XXP** 646 +|(% rowspan="4" %)CCPID_SHT|Parameter 1|●|●|●| | 647 +|Parameter 2|●|●|●| | 648 +|Parameter 3|●|●|●| | 649 +|Parameter 4|●|●|●| | 650 + 651 +**Features** 652 + 653 +This instruction is to complete the temperature control operation, used to control the parameters of the closed-loop control system. 654 + 655 +[[image:1758113204827-229.png]] is the target value of CCPID SHT control (SV). 656 + 657 +[[image:1758113217569-229.png]] is the measured feedback value (PV). 658 + 659 +[[image:1758113227549-844.png]] is the start address of the cache where the parameters required by CCPID_SHT operation and intermediate results are saved, 660 + 661 +occupying a total of 36 variable units of subsequent addresses. The value range is from D0 to D7946 or from R0 to R29964. It is better to specify power failure retention, and the setting value remains after power supply is off. Otherwise, the cache needs to be assigned value before starting the calculation for the first time. The function and parameter description of each unit are described in this section. 662 + 663 +[[image:1758113243743-809.png]] is the storage unit of the CCPID_SHT calculation result. Please specify it as a non-battery retentive area, otherwise it needs to be initialized and cleared before the first start of calculation. 664 + 665 +**Programming example** 666 + 667 +[[image:1758113269397-376.png]] 668 + 669 + 670 +The parameter description is as follows: 671 + 672 +The target value of CCPID_SHT adjustment is stored in D1, and D0 is the closed-loop feedback value. Note that D0 and D9 must be of the same dimension, such as both 0.01MPa units, or 1℃ units, etc.. 673 + 674 +A total of 36 units of D1000 to D1035 are used to store the set value and process value of CCPID_SHT operation. These values must be set item by item before the first CCPID_SHT calculation. 675 + 676 +D100 unit is used to store the calculated control output value to control the execution of the action. 677 + 678 +[[image:1758113227549-844.png]]The functions and setting methods of the parameter values of each unit at the beginning are described in the table below: 679 + 680 + [[image:1758113227549-844.png]]to[[image:1758113227549-844.png]] +15 is the parameter range that can be set (parameters set when CCPID_SHT is executed). 681 + 682 +[[image:1758113227549-844.png]]+2 to [[image:1758113227549-844.png]]+31 is the parameter space used in the self-tuning process. (This space is multiplexed with the parameter space during control) 683 + 684 + 685 +The functions and setting methods of the parameter values of each unit started by are described in the following table: 686 + 687 +|(% style="width:106px" %)**Unit**|(% style="width:146px" %)**Function**|**Description** 688 +|(% style="width:106px" %)[[image:1758113227549-844.png]]|(% style="width:146px" %)Sampling time (TS)|Range: 1 to 32767 (ms). It must be longer than PLC program scan cycle. 689 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+1|(% style="width:146px" %)Control flag bit|((( 690 +bit0: 0=Forward action; 1=Reverse action 691 + 692 +bit3: 0=one-way; 1=two-way 693 + 694 +bit4: 0=Self-tuning does not act; 1=Perform self-tuning and the others are not available. 695 + 696 +bit6: 0=Two-segment self-tuning does not act; 1=Perform two-segment self-tuning (bit4 must set to 1) 697 + 698 +bit7: 0=Three-segment self-tuning does not act; 1=Perform three-segment self-tuning (bit4 must set to 1) 699 + 700 +Bit15: The instruction initialization flag bit. When initialization is complete, it is set to 1. 701 +))) 702 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+2|(% style="width:146px" %)Maximum rate of increase (DeltaT)|Range: 0 to 32000. Threshold of integral increment 703 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+3|(% style="width:146px" %)Proportional gain (Kp)|Range: 0 to 32767. This value is magnified 256 times and the actual value is Kp/256. 704 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+4|(% style="width:146px" %)Integral gain (Ki)|Range: 0 to 32767, Ki=16384Ts/Ti,Ti is integral time 705 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+5|(% style="width:146px" %)Differential gain (Kd)|Range: 0 to 32767, Kd≈Td/Ts, Td is differential time 706 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+6|(% style="width:146px" %)Filter constant (Co)|Range: 0 to 1023, Integral partial filtering. 707 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+7|(% style="width:146px" %)Output lower limit|Recommended setting range: -2000 to 2000 708 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+8|(% style="width:146px" %)Output upper limit|Recommended setting value: 2000. When the upper and lower limits are both 0, the upper limit becomes 2000 and the lower limit becomes 0. 709 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+9|(% style="width:146px" %)Reserved|Reserved for internal use 710 +|(% style="width:106px" %)┇|(% style="width:146px" %)┇|┇ 711 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+35|(% style="width:146px" %)Reserved|Reserved for internal use 712 + 713 +Parameter space corresponding to the self-tuning time 714 + 715 +|(% style="width:106px" %)**Unit**|(% style="width:141px" %)**Function**|**Description** 716 +|(% style="width:106px" %)[[image:1758113227549-844.png]]|(% style="width:141px" %)Sampling time (TS)|Range: 1 to 32767 (ms). It must be longer than PLC program scan cycle. 717 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+1|(% style="width:141px" %)Control flag bit|((( 718 +bit0: 0=Forward action; 1=Reverse action 719 + 720 +bit3: 0=one-way; 1=two-way 721 + 722 +bit4: 0=Self-tuning does not act; 1=Perform self-tuning and the others are not available. 723 + 724 +bit6: 0=Two-segment self-tuning does not act; 1=Perform two-segment self-tuning (bit4 must set to 1) 725 + 726 +bit7: 0=Three-segment self-tuning does not act; 1=Perform three-segment self-tuning (bit4 must set to 1) 727 + 728 +Bit15: This instruction initializes the flag bit. When initialization is complete, the position is set to 1. 729 +))) 730 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+2|(% style="width:141px" %)Sampling time of PID running after self-tuning|Setting range: 1 to 32767 ms(). When Ts≦0, Ts=3000 731 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+3|(% style="width:141px" %)Coefficient ukp for PID parameter calculation|Setting range: 0 to 500. When ukp≦0, ukp=100; When ukp≧500, ukp=500. 732 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+4|(% style="width:141px" %)Coefficient uki for PID parameter calculation|Setting range: 0 to 32767. When uki≦0, uki=50. 733 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+5|(% style="width:141px" %)Coefficient ukd for PID parameter calculation|Setting range: 0 to 32767. When ukd≦0, ukd=50. 734 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+6|(% style="width:141px" %)Reserved|Reserved 735 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+7|(% style="width:141px" %)Output lower limit|Recommended setting range: -2000 to 2000 736 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+8|(% style="width:141px" %)Output upper limit|Recommended setting value: 2000. When the upper and lower limits are both 0, the upper limit becomes 2000 and the lower limit becomes 0. 737 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+9|(% style="width:141px" %)Reserved|Reserved for internal use 738 +|(% style="width:106px" %)┇|(% style="width:141px" %)┇|┇ 739 +|(% style="width:106px" %)[[image:1758113227549-844.png]]+35|(% style="width:141px" %)Reserved|Reserved for internal use 740 + 741 +**Error code** 742 + 743 +|**Error code**|**Content** 744 +|4085H|Read application instruction (S1), (S2), (S3) and (d) output results exceed the range of device. 745 +|4086H|The devices specified in write application instruction (S3) and (d) exceed the range of the corresponding device. 746 +|4DB0H|Sampling time (Ts) exceeds the range the object (Ts≦0) 747 +|4DB1H|Output filter constant (Co) exceeds the range the object (Co<0 or Co>1023) 748 +|4DB2H|Maximum rate of increase (DeltaT) exceeds the range the object (deltaT<0 or deltaT>32000) 749 +|4DB3H|Proportional gain (Kp) exceeds the range the object (Kp≦0) 750 +|4DB4H|Integral gain (Ki) exceeds the range the object (Ki≦0) 751 +|4DB5H|Differential gain (Kd) exceeds the range the object (Kd≦0) 752 +|4DB6H|Sampling time (Ts) < operation cycle 753 + 754 +**Example** 755 + 756 + 757 + 758 +(% style="text-align:center" %) 759 +[[image:企业微信截图_17581134583885.png]] 760 + 761 +(% style="text-align:center" %) 762 +[[image:企业微信截图_17581134696804.png]] 763 + 618 618 == **LAGCDL Large time-delay temperature control instruction** == 619 619 620 620 **LAGCDL** ... ... @@ -739,64 +739,10 @@ 739 739 (% style="text-align:center" %) 740 740 [[image:企业微信截图_17581120459254.png]] 741 741 742 -== **PRUN/Octal digit transmission (16-bit data)** == 743 - 744 ----- 745 - 746 -PRUN(P) 747 - 748 -After processing the device numbers of (s) and (d) with specified digits as octal numbers, transfer the data. 749 - 750 --[PRUN (s) (d)] 751 - 752 -Content, range and data type 753 - 754 -|=**Parameter**|=**Content**|=**Range**|=**Data type**|=**Data type (label)**|=**Custom variable type** 755 -|(s)|Digit specification*1|-|BIN16 bit|ANY16|~-~- 756 -|(d)|Transfer target device number*1|-|BIN16 bit|ANY16|~-~- 757 - 758 -Device used 759 - 760 -|=(% style="width: 64px;" %)**Instruction**|=(% style="width: 128px;" %)**Parameter**|=(% colspan="24" %)**Devices**|=**Index modification**|=**Pulse expansion** 761 -|(% style="width:64px" %) |(% style="width:128px" %) |**X**|**Y**|**M**|**S**|**SM**|**T(bit)**|**C(bit)**|**LC(bit)**|(% style="width:32px" %)**HSC(bit)**|(% style="width:94px" %)**D.b**|**KnX**|**KnY**|**KnM**|**KnS**|**T**|**C**|**D**|**R**|(% style="width:41px" %)**SD**|(% style="width:42px" %)**LC**|**HSC**|**K**|**H**|**E**|**[D]**|**XXP** 762 -|(% colspan="1" rowspan="2" style="width:64px" %)PRUN|(% style="width:128px" %)Parameter 1| | | | | | | | |(% style="width:32px" %) |(% style="width:94px" %) |●| |●| | | | | |(% style="width:41px" %) |(% style="width:42px" %) | | | | |●|● 763 -|(% style="width:128px" %)Parameter 2| | | | | | | | |(% style="width:32px" %) |(% style="width:94px" %) | |●|●| | | | | |(% style="width:41px" %) |(% style="width:42px" %) | | | | |●|● 764 - 765 -Function 766 - 767 -• Octal digit device→ decimal digit device 768 - 769 -(% style="text-align:center" %) 770 -[[image:1709790843788-781.png]] 771 - 772 -• Decimal digit device → octal digit device 773 - 774 -(% style="text-align:center" %) 775 -[[image:1709790863850-104.png]] 776 - 777 -Error code 778 - 779 -|=**Error code**|=**Content** 780 -|4085H|When the specified device range for reading exceeds the range of the corresponding device 781 -|4086H|When the specified device range for writing exceeds the range of the corresponding device 782 - 783 -Example 784 - 785 -(% style="text-align:center" %) 786 -[[image:1709790902188-165.png]] 787 - 788 -As shown in the above ladder diagram: X0~~X17 takes the value of octal digits and pass it to the devices corresponding to M. 789 - 790 -(% style="text-align:center" %) 791 -[[image:1709790924438-346.png]] 792 - 793 - 794 794 == **TRH/Wet and dry bulb temperature and humidity conversion** == 795 795 796 - ----890 +TRH 797 797 798 -[[image:file:///C:\Users\ADMINI~~1\AppData\Local\Temp\ksohtml13328\wps3.png]]TRH 799 - 800 800 This command completes the conversion of dry bulb temperature, wet bulb temperature and corresponding humidity. 801 801 802 802 -[TRH (d1) (s) (d2) (n)]
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