6SN1123-1AA00-0DA1模块;
6SN1123-1AA00-0DA1模块;
6SN1123-1AA00-0DA1模块
![6SN1123-1AA00-0DA1模块](//l.b2b168.com/2023/05/08/10/202305081014128691464.jpg)
PLC点阵键盘
在工控行业中,有时候会碰到因为可编程控制器(PLC)输入点的不够,而导致需要更换设备,浪费资源。对此,当实时性不需要那么高时,我们可以编写一个键盘的扫描程序来扩展输入的点数。因为扫描的方式是循环扫描,所以在实时性方面会有一定的欠缺。
下面是用海为PLC编程软件编写的8乘6的48键扫描程序。需要用到8个输入点,6个输出点,硬件连接如下图所示:
注:当要求实现组合按键时上图的二极管必须加,反之二极管可加可不加。
扫描的点是令Y0~Y5循环输出,当有按钮按下时,就会做出相应的动作,例如:当按钮键0按下时,则X0接通,当程序扫描到Y0时,X0与Y0形成一个回路, 表示按键“0”按下。程序如下图所示:
结论:键盘是以循环扫描的方式来进行输入,而扫描的时间越短则实时性越好。但是当扫描时间过短时会因Y0~Y5输出结束时,X0仍未接通导致无法产生输出信号。或者当Y0输出结束,Y1也输出结束时,X0仍未断开,导致误判断。
经过型号SW-S32ZS220T测试可知每次循环扫描的时间T0不得低于20ms。建议可将滤波时间设得短一点,则可以缩短每次循环扫描的时间T0,例如:本例中将滤波时间设为0.8ms,则每次循环扫描的时间T0可以设到较短10ms。
Panasonic AC Servo Driver MADDT1207052 Free ship
OKUMA BL-MC100E-20TB USPP BLMC100E20TB
Texas Instruments 305-02B
PANASONIC AC SERVO DRIVER MSD5A1E
TEXAS INSTRUMENTS PLC 505-4317 NSFP 5054317
TEXAS INSTRUMENTS PLC 505-7003 USPP 5057003
TEXAS INSTRUMENTS PLC 2600634-0001 USPP 26006340001
HBM 208479A USPP 208479A
ASEA BROWN BOVERI NDCU-21C NSFP NDCU21C
TEXAS INSTRUMENTS PLC 120-1113 NSFP 1201113
Perceptron Repeater Enclosure Assembly 926-0127 G 2025
SQUARE D KHL3612517DC1616 NSPP KHL3612517DC1616
ASEA BROWN BOVERI PSS105/181-500F NSFP PSS105181500F
Texas Instruments 2497447 PC Board
ASEA BROWN BOVERI 289B456A13 NSFP 289B456A13
One Panasonic Servo Driver MBDDT2210 Free Ship
TECNO ELETTRONICA 1043506114720 USPP 1043506114720
**NAR SYSTEMS EL640.400-C2 USPP EL640400C2
FISHER ROSEMOUNT 895C NSPP 895C
TEXAS INSTRUMENTS PLC PM550-100 USPP PM550100
TEXAS INSTRUMENTS PLC 5TI-1032-1 USPP 5TI10321
SIEMENS 6ES5-943-7UA11 USPP 6ES59437UA11
TEXAS INSTRUMENTS 545-1101 TI545 CPU MODULE 5451101
ASEA BROWN BOVERI EH250-36VDC-T NSPP EH25036VDCT
(AG01) PANASONIC MSM041A1F AC SERVO MOTOR WORKING
TEXAS INSTRUMENTS PLC VPU-200-3104 USPP VPU2003104
MEASUREX 05353500 NSPP 05353500
Panasonic AC Servo Driver MDD083A1VV Free Ship
TOTAL CONTROL PRODUCTS GCK2D100L2P USPP GCK2D100L2P
TEXAS INSTRUMENTS PLC 560-2130 USPP 5602130
Panasonic DV83020LE201 AC Servo Motor Driver with 60 day warranty
ALLEN BRADLEY 1771-DE NSFP 1771DE
Panasonic AC SERVO MOTOR MSMA082A1G USED AND GOOD IN CONDITION
HEWLETT PACKARD TEST & MEASURE 1645A USPP 1645A
TEXAS INSTRUMENTS PLC 505-CP5434--L2-DP USPP 505CP5434L2DP
ASEA BROWN BOVERI 57360001-KG USPP 57360001KG
EXLAR GS30-0305-MSM-EM2-M6 NSFP GS300305MSMEM2M6
ASEA BROWN BOVERI YM222001 NSPP YM222001
ONLINE DEVELOPMENT INC 97282901 NSPP 97282901
TEXAS INSTRUMENTS PLC 24-901-30-000 NSPP 2490130000
TEXAS INSTRUMENTS PLC 305-25T USPP 30525T
OMRON F3SN-A0207P14 USPP F3SNA0207P14
Siemens TI 565 PLC Memory Card 560-2136
TEXAS INSTRUMENTS PLC 505-2571 NSPP 5052571
TEXAS INSTRUMENTS 305 05B PROGRAMMABLE CONTROLLER ASSEMBLY
GE FANUC TGT-S000-1-1-AA USPP TGTS00011AA
TEXAS INSTRUMENTS PLC 5TI-1013-1 USPP 5TI10131
Texas Instruments 305-01AB
ASEA BROWN BOVERI ACS601-0025-4-000B1200801 USPP ACS60100254000B1
ORIENTAL MOTOR BLD180A-MK USPP BLD180AMK
ASEA BROWN BOVERI 3ADT306200R1 NSPP 3ADT306200R1
TEXAS INSTRUMENTS PLC U-01Z USPP U01Z
ELECTRO CRAFT 9101-1131 USPP 91011131
TEXAS INSTRUMENTS PLC 500-5052 USPP 5005052
ASEA BROWN BOVERI 3HAA3573-ACA NSPP 3HAA3573ACA
Panasonic MDDA153A1A AC Servo Driver tested
MILLTRONICS 82211001 NSFP 82211001
Texas Instruments 510-1101
ASEA BROWN BOVERI 3HAC-17484-2/00 NSPP 3HAC17484200
SIEMENS 6ES7-315-1AF03-0AB0 NSPP 6ES73151AF030AB0
ROBERTSHAW DMS-350AC USPP DMS350AC
TEXAS INSTRUMENTS PLC 560-2134 USPP 5602134
GE FANUC IC600LX648 USPP IC600LX648
TEXAS INSTRUMENTS PLC 505-6851B NSFP 5056851B
Texas Instruments 500-5032
ASEA BROWN BOVERI APSAF-03 USPP APSAF03
Texas Instruments 500-5056 Output Module
CTI 2572 for Texas Instruments/Siemens TI 2572
Panasonic MSD023A1XXV AC Servo Driver
Texas Instrument Siemens thermocouple input module 500-5051 3 ailable
ASEA BROWN BOVERI 289B456A13 NSFP 289B456A13
SABROE 1572.008 NSPP 1572008
Siemens TI 565 PLC Memory Card 560-2136
TEXAS INSTRUMENTS PLC PWB-2599168-0001 USPP PWB25991680001
TEXAS INSTRUMENTS PLC 505-5518 USPP 5055518
TEXAS INSTRUMENTS PLC 505-4016A USPP 5054016A
IMPCO 14339A NSFP 14339A
ALLEN BRADLEY 8520-3APA1 USPP 85203APA1
http://1895086873173.b2b168.com