Bachmann(巴赫曼) PTAI216

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              Bachmann(巴赫曼)PTAI216

     咨询电话:**18050036945**

 

 

 

结构框图

    1)使用PID过程控制模块。这种模块的PID控制程序是PLC生产厂家设计的,并存放在模块中,用户在使用时只需要设置一些参数,使用起来非常方便,一块模块可以控制几路甚至几十路闭环回路。但是这种模块的价格昂贵,一般在大型控制系统中使用。如三菱的A系列、Q系列PLC的PID控制模块。

    2)使用PID功能指令。现在很多中小型 PLC都提供PID控制用的功能指令,如FX2N系列PLC的PID指令。它们实际上是用于PID控制的子程序,与A/D、D/A模块一起使用,可以得到类似于使用PID过程控制模块的效果,价格却便宜得多。

3)使用自编程序实现PID闭环控制。有的PLC没有有PID过程控制模块和 PID控制指令,有时虽然有PID控制指令,但用户希望采用变型PID控制算法。在这些情况下,都需要由用户自己编制PID控制程序。

 


3. FX2N的PID指令

 

PID指令的编号为FNC88,如图6-36所示源操作数[S1]、[S2]、[S3]和目标操作数[D]均为数据寄存器D,16位指令,占9个程序步。[S1]和[S2]分别用来存放给定值SV和当前测量到的反馈值PV,[S3]~[S3]+6用来存放控制参数的值,运算结果MV存放在[D]中。源操作数[S3]占用从[S3]开始的25个数据寄存器。

 

 

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ConTRAVES INTERSYS TA 200 DISPLAY SCREEN
 
NEMATRON CIRCUIT BOARD 110A0430 REV C
 
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ALLEN BRADLEY 9/SERIES MONO INDUSTRIAL MonITOR 8520-MOP7 *DAMAGE #3*
 
SYMBOL TECHNOLOGIES MICROLISE ENGINEERING KEYBOARD KYBD8900-00 *DAMAGED #2*
 
ALLEN BRADLEY DATALINER DISPLAY PANEL 2706-E43J32B1 SER. D *DAMAGE #2*
 
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ALLEN BRADLEY VISION COLOR MonITOR 2801-N8 SER. A *PARTS/REPAIR*
 
ALLEN BRADLEY PANELVIEW 900 OPERATOR PANEL 2711-T9C1 SER. A FRN 2.01 *FOR REPAIR
 
ALLEN BRADLEY DATALINER DISPLAY PANEL 2706-E43J32B1 SER. D *DAMAGE #3*
 
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ALLEN BRADLEY PANELVIEW 900 OPERATOR PANEL 2711-K9A1 SER. F FRN 3.03 *SCREEN #1*
 
ALLEN BRADLEY PANELVIEW 1400e TERMINAL 2711E-T14C6 SER. A REV. B FRN. 1.03.00
 
MITSUBISHI GRAPHIC OPERATION TERMINAL A77GOT-L-S5 *PARTS/REPAIR*
 
ALLEN BRADLEY 9/SERIES COLOR OPERATOR PANEL 8520-VOP1 REV. 01 *DAMAGED #2*
 
ALLEN BRADLEY 9/SERIES MONO INDUSTRIAL MonITOR 8520-MOP7 *DAMAGE #4*
 
CUTLER-HAMMER D7A OPERATOR INTERFACE PANEL D7AVISTEON *P/R #1*
 
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ALLEN BRADLEY OPERATOR INTERFACE 2711-TC1 SER. E FRN 5.00.00 *PARTS/REPAIR*
 
ALLEN BRADLEY Panelview TERMINAL 2711-T SER. E FRN 5.02.00 *PARTS/REPAIR*
 
ALLEN BRADLEY PanelView 1200 TERMINAL 2711-T SER. F FRN 5.13.01 *PARTS/REPAIR*
 
ALLEN BRADLEY PanelView 1200 TERMINAL 2711-T SER. F FRN 5.11.00 *PARTS/REPAIR*
 
CUTLER-HAMMER D7A OPERATOR INTERFACE PANEL D7AVISTEON *P/R #2*
 
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TELEMECANIQUE SCHNEIDER ELECTRIC PANEL TCCX1730LW *PLASTIC CASE / SCREEN*
 
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ALLEN BRADLEY DATALINER DISPLAY PANEL 2706-E43J32B1 SER. D *DAMAGE 1*
 
COOPER OPERATOR INTERFACE Y2K-OS9-V2.9 68K *DIM SCREEN*
 
ALLEN BRADLEY Panelview TERMINAL 2711-TC1 SER. E FRN 5.02.00 *PARTS/REPAIR*
 
ALLEN BRADLEY 9/SERIES COLOR OPERATOR PANEL 8520-VOP1 REV. 1 *PARTS/REPAIR*
 
ALLEN BRADLEY PanelView 1400e TERMINAL 2711E-K14C6 SER. A FRN 1.03 *DAMAGED #2*
 
ALLEN BRADLEY OPERATOR INTERFACE 2711-KC1 SER. C FRN 3.01.00 *PARTS/REPAIR*
 
FANUC ROBOTICS FUJITSU MDI/CRT UNIT A02B-0051-0032 *PARTS/REPAIR*
 
ALLEN BRADLEY PanelView 1200 OPERATOR INTERFACE 2711-TC1MC SER. F *PARTS/REPAIR*
 
ALLEN BRADLEY Panelview 1200 TERMINAL INTERFACE 2711-TC1MC SER. G *PARTS/REPAIR*
 
SYMBOL MICROLISE VEHICLE MOUNT COMPUTER VRC8946-12SZ02W?W *PARTS/REPAIR*
 
ALLEN BRADLEY PanelView 1200 TERMINAL 2711-TC1 SER. F *PARTS/REPAIR*
 
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