描述
首先我们从集成I/O数量和类型来看,由于小型PLC绝大部分应用都在机械设备的自动化控制,因此以数字量的控制需求为主,PLC的高速计数点可读取普通的输入点读取不到的高速脉冲,并对之进行计数,使用脉冲输出功能和脉冲序列指令型伺服电机马达配合,可构成轴定位装置,具备这些配置的小型PLC会在具体应用中显得更加得心应手。
再看CPU的运算速度,以最基本的位指令运算速度为例,三菱用时最短,仅需0.08微秒,紧随其后的是汇川,而大工计控提供的数据则与其它品牌产品相差较大。
就存储容量来看,由于各品牌提供的表示方式不一,可分为数据空间和程序空间两种表示方式,比较充裕的是南大傲拓、大工计控和矩形科技。当然,由于小型PLC的应用领域所限,多数情况下并不需要这么多的存储空间,各厂家的产品达到“够用”的需求还是都可以满足的。
由于用户在使用PLC时经常需要用到各类型的通讯接口,所以内置接口数量多少和类型是否丰富也是考核小型PLC的一项重要指标。在这项参数中,表现突出的当属腾控科技和大工计控的两款产品,不仅配备基本的串口,还内置了以往很少在小型PLC中出现的以太网接口,是值得鼓励的设计亮点。
在以上各款PLC支持的通讯协议方面,各家基本都支持常用的Modbus协议,方便进行系统的连接与扩展。另外,信捷、台达等几家国产PLC厂商开发了CAN通信接口,有效增强了其互联能力,使不同厂商的设备可以快速进行通讯,构成一套完善的控制系统。
欧美品牌停产的,常用的“PLC”备品备件
我司产品应用于以下领域:
1,《发电厂DCS监控系统》
2,《智能平钢化炉系统制造》
3,《PLC可编程输送控制系统》
4,《DCS集散控制系统》
5,《智能型消防供水控制系统》
6,《化工厂药液恒流量计算机控制系统》
7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列
本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。
CONTROL TECHNIQUES 9500-8602-R QUANTUM III DC DRIVE*RFB
TOOLS&TECHNIQUES 1986 SUPP GM COMPUTOR ENGINE CONTROL
TOOLS&TECHNIQUES 1987 SUPP GM COMPUTOR ENGINE CONTROL
Emerson/Control Techniques UNI3403 Servo Drive
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CONTROL TECHNIQUES 9500-8602 QUANTUM III DC DRIVE*NIB*
1974 Yoga Release Tension Techniques Mind Control HC/DJ
EMERSON/CONTROL TECHNIQUES 566-857-000/M75R-14M**XLNT**
CONTROL TECHNIQUES LX-400 USPP LX400
Painless Pain Control NDT Neuro Dynamic Techniques
CONTROL TECHNIQUES SP1403-ICD AC SERVO DRIVE**XLNT**
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CONTROL TECHNIQUES MDA2B/MDA-2B INTERFACE BOARD*XLNT*
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CONTROL TECHNIQUES QUANTUM III SIDE PANELS**XLNT**
CONTROL TECHNIQUES MDA3/MDA-3 FIELD CONTROLLER**XLNT**
CONTROL TECHNIQUES MDA2/MDA-2 INTERFACE BOARD*XLNT*
CONTROL TECHNIQUES M45/9500-8302 MENTOR/QUANTUM BASE
CONTROL TECHNIQUES 9500-8302 QUANTUM III MID SECTION
CONTROL TECHNIQUES CMDS-015 USPP CMDS015
CONTROL TECHNIQUES 9500-8303 QUANTUM III MID SECTION
CONTROL TECHNIQUES M75/9500-8303 MENTOR/QUANTUM BASE
Emerson Control techniques FM-3DN P/N 960506-02 rev.A5
CONTROL TECHNIQUES EI-205-00-000 INDEXING SERVO DR*NIB
CONTROL TECHNIQUES CFOS-005 NSPP CFOS005
CONTROL TECHNIQUES DIN3380150BM DINVERTER
CONTROL TECHNIQUES UNI1402 UNIDRIVE 2HP AC DRIVE*XLNT*
Control techniques DXM-205 PN:861114-50 A3
Control Techniques NTM-330-CONS-W024|Servo Motor*NNB
Control Techniques NTM-330-TONS-KE05|Servo Motor
NEW IN BOX VARIABLE SPEED AC CONTROL TECHNIQUES DRIVE
CONTROL TECHNIQUES UNI1403 3HP 460VAC DRIVE**XLNT**
CONTROL TECHNIQUES V400 FLUX VECTOR DRIVE**XLNT**
Control Techniques NTE-207-TONS-0000 Servo Motor
CONTROL TECHNIQUES RC-030 USPP RC030
CONTROL TECHNIQUES 9500-8602 QUANTUM III DC DRIVE*XLNT*
Advanced Computing Concepts and Techniques in Control Engineering(1988,Hardcover)
CONTROL TECHNIQUES UD-BV-1 USPP UDBV1
CONTROL TECHNIQUES MGE-455-CONS-0000 SERVO MOTOR
Control Techniques Worldwide Dinverter DIN1220150B
CONTROL TECHNIQUES FCR-025 NSFP FCR025
CONTROL TECHNIQUES RU-653 NSPP RU653
CONTROL TECHNIQUES TIA-025 NSFP TIA025
CONTROL TECHNIQUES 6180-9007 NSFP 61809007
CONTROL TECHNIQUES SE51 NSPP SE51
Tools OTC Techniques GM Computerized Engine Controls
CONTROL TECHNIQUES ECF-015/810492-15 CABLE***NIB***
Controls from Within by David Wineman,Fritz Redl(1965,Paperback)
CONTROL TECHNIQUES PTOOLS-FM NSFP PTOOLSFM
CONTROL TECHNIQUES 2400-9002 NSFP 24009002
CONTROL TECHNIQUES SKB3400055 NSFP SKB3400055
CONTROL TECHNIQUES SKB3400110 NSFP SKB3400110
CONTROL TECHNIQUES SKBD200150 NSFP SKBD200150
CONTROL TECHNIQUES DCN-93825 USPP DCN93825
CONTROL TECHNIQUES UBDV3 USPP UBDV3
Control Techniques DB220 Digit AX Brushless Servo Drive
Control Techniques DB220 Digit AX Brushless Servo Drive
CONTROL TECHNIQUES 5K POTENTIOMETER(SET OF 6)NNB!!
New Control Techniques Focus 3 Toggle Switch
CONTROL TECHNIQUES SKKEYPADREMOTE NSFP SKKEYPADREMOTE
CONTROL TECHNIQUES SMIOLITE NSFP SMIOLITE
CONTROL TECHNIQUES M155R-14ICDQ USPP M155R14ICDQ
CONTROL TECHNIQUES 960503-01 NSFP 96050301
CONTROL TECHNIQUES SSC-06 USPP SSC06
CONTROL TECHNIQUES ITEM#P399-00-000
CONTROL TECHNIQUES UD51 ENCODER OPTION MODULE**XLNT**
CONTROL TECHNIQUES SMIOPLUS NSFP SMIOPLUS
CONTROL TECHNIQUES DCD60X10/20 NSFP DCD60X1020
CONTROL TECHNIQUES 810721-15 USPP 81072115
CONTROL TECHNIQUES DB420NP USPP DB420NP
CONTROL TECHNIQUES DEIRECTAX-2 USPP DEIRECTAX2
CONTROL TECHNIQUES MD29 NSFP MD29
CONTROL TECHNIQUES ALP-130 USPP ALP130
CONTROL TECHNIQUES ECM-025 NSPP ECM025
Control Techniques Unidrive SP1402
CONTROL TECHNIQUES,COMMANDER SE AC DRIVE,SE2D200075
Control Techniques Commander SE SE2D200150 200-240V 2hp
CONTROL TECHNIQUES CFCS-025 USPP CFCS025
CONTROL TECHNIQUES APC-006 NSFP APC006
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CONTROL TECHNIQUES MX-280NP USPP MX280NP
CONTROL TECHNIQUES UNI1402 USPP UNI1402