福建中立恒自动化设备有限公司
一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。
它采用可以编制程序的存储器,用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令,并能通过数字式或模拟式的输入和输出,控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体,易于扩展其功能的原则而设计。在工业生产的各个领域,机械加工企业为了提高生产效率,采用机械化流水作业的方式,对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代,生产线承担的加工对象也随之改变,这就需要改变控制程序,使生产线的机械设备按新的工艺过程运行,而继电接触器控制器系统是采用固定接线,很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多,随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。
发展趋势:1.向高速度、大容量方向发展
为了提高PLC的处理能力,要求PLC具有的响应速度和更大的存储容量。目前,有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。
在存储容量方面,有的PLC可达几十兆字节。为了扩大存储容量,有的公司已使用了磁泡存储器或硬盘。
2.向超大型、超小型两个方向发展
当前中小型PLC比较多,为了适应市场的多种需要,今后PLC要向多品种方向发展,特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC,其使用32位微处理器,多CPU并行工作和大容量存储器,功能强。
DRUCK PDCR 921-1742 SENSOR 5 VOLTS /-500 MBAR
DRUCK PTX1400 INDUSTRIAL PRESSURE TRANSMITTER 6 BAR G
DRUCK PTX1400 INDUSTRIAL PRESSURE TRANSMITTER 6 BAR G
DTE 370-3000-201 383-1-529 PROCESSOR BOARD 3703000201
DTE 370-3000-201 383-1-529 PROCESSOR BOARD 3703000201
DTE 370-3000-201 383-1-529 PROCESSOR BOARD 3703000201
DTE 370-3000-201 383-1-529 PROCESSOR BOARD 3703000201
DVD VC242 PC BOARD PX4700270001, 03004079
DVD VC242 PC BOARD PX4700270001, 03004079
DVD VC242 PC BOARD PX4700270001, 03004079
DVD VC242 PC BOARD PX4700270001, 03004079
DVT CORP. PCB601 BREAK OUT BOARD REV.2
DVT CORP. PCB601 BREAK OUT BOARD REV.2
DVT CORP. PCB601 BREAK OUT BOARD REV.2
DVT CORP. PCB601 BREAK OUT BOARD REV.2
DY-14 PCB CARD
DY-14 PCB CARD
DYNAMATIC 15-240-5 RELAY BOARD 152405
DYNAMATIC 15-240-5 RELAY BOARD 152405
DYNAMATIC 15-444-4 CIRCUIT BOARD 154444 70-154-4
DYNAMATIC 15-444-4 CIRCUIT BOARD 154444 70-154-4
DYNAMATIC 15-815-4 CIRCUIT BOARD 158154 15-874-1
DYNAMATIC 15-815-4 CIRCUIT BOARD 158154 15-874-1
DYNAMATIC 15-815-4 CIRCUIT BOARD 158154 15-874-1
DYNAMATIC 15-815-4 CIRCUIT BOARD 158154 15-874-1
DYNAMATIC EATON DIVISION 15-54-31 PC BOARD 155431
DYNAMATIC EATON DIVISION 15-54-31 PC BOARD 155431
DYNAMIC 15-141-32 BRIDGE ASSEMBLY BOARD 1514132
DYNAMIC 15-141-32 BRIDGE ASSEMBLY BOARD 1514132
DYNAMIC ASS'Y E-1450-2 E-1449 CIRCUIT BOARD E14502
DYNAMIC ASS'Y E-1450-2 E-1449 CIRCUIT BOARD E14502
DYNAMIC RESOLUTIONS 990035-01 BOARD 99003501
DYNAMIC RESOLUTIONS 990035-01 BOARD 99003501
DYNAMIC RESOLUTIONS 990035-01 BOARD 99003501
DYNAMIC RESOLUTIONS 990035-01 BOARD 99003501
DYNAMIC RESOLUTIONS 990035-01 BOARD 99003501
DYNAMIC RESOLUTIONS 990035-01 BOARD 99003501
DYNISCO SCM600/115V/0/0-10V/0 SIGNAL CONDITIONER CARD SCM600115V0010V0
DYNISCO SCM600/115V/0/0-10V/0 SIGNAL CONDITIONER CARD SCM600115V0010V0
DYNOPTIC SM-202M OPERATOR INTERFACE SINGLE PASS OPACITY MONITOR SM-202
DYNOPTIC SM-202M OPERATOR INTERFACE SINGLE PASS OPACITY MONITOR SM-202
DYNOPTIC SM-202M OPERATOR INTERFACE SINGLE PASS OPACITY MONITOR SM-202
DYNOPTIC SM-202M OPERATOR INTERFACE SINGLE PASS OPACITY MONITOR SM-202
EAE 982051 PC BOARD
EAE 982051 PC BOARD
EAE MUG2 CIRCUIT BOARD
EAE MUG2 CIRCUIT BOARD
EAE MUG2 CIRCUIT BOARD
EAE MUG2 CIRCUIT BOARD
EAGLE MACHINERY EMSS-10201 CIRCUIT BOARD EMSS10201
EAGLE MACHINERY EMSS-10201 CIRCUIT BOARD EMSS10201
EAGLE MACHINERY EMSS-10201 CIRCUIT BOARD EMSS10201
EAGLE MACHINERY EMSS-10201 CIRCUIT BOARD EMSS10201
EAGLE MACHINERY EMSS-10212 PROCESSOR BOARD EMSS10212
EAGLE MACHINERY EMSS-10212 PROCESSOR BOARD EMSS10212
EAGLE MACHINERY EMSS-10212 PROCESSOR BOARD EMSS10212
EAGLE MACHINERY EMSS-10212 PROCESSOR BOARD EMSS10212
EAGLE MACHINERY EMSS-10403 CONTROL BOARD EMSS10403 EMSS-10403-E
EAGLE MACHINERY EMSS-10403 CONTROL BOARD EMSS10403 EMSS-10403-E
EAGLE MACHINERY EMSS-10403 CONTROL BOARD EMSS10403 EMSS-10403-E
EAGLE MACHINERY EMSS-10403 CONTROL BOARD EMSS10403 EMSS-10403-E
EAGLE MACHINERY EMSS-10511 CONTROL BOARD EMSS10511
EAGLE MACHINERY EMSS-10511 CONTROL BOARD EMSS10511
EAGLE MACHINERY EMSS-10511 PROCESSOR BOARD EMSS10511
EAGLE MACHINERY EMSS-10511 PROCESSOR BOARD EMSS10511
EAGLE MACHINERY EMSS-10511 PROCESSOR BOARD EMSS10511
EAGLE MACHINERY EMSS-10511 PROCESSOR BOARD EMSS10511
EAGLE MACHINERY EMSS-10611 PROCESSOR BOARD EMSS10611
EAGLE MACHINERY EMSS-10611 PROCESSOR BOARD EMSS10611
EAGLE PNEUMATIC MODEL: ULM BOARD REV. F
EAGLE PNEUMATIC MODEL: ULM BOARD REV. F
EAGLE PNEUMATIC MODEL: ULM BOARD REV. F
EAGLE PNEUMATIC MODEL: ULM BOARD REV. F
EAGLE PNEUMATIC MODEL: ULM BOARD REV. F
EAGLE PNEUMATIC MODEL: ULM BOARD REV. F
EAO 44-800.2 JOYSTICK LEVER SWITCH BACKUP CONTROL BOARD
EAO 44-800.2 JOYSTICK LEVER SWITCH BACKUP CONTROL BOARD
EATON / KENWAY 0063836-002 INPUT BOARD 0063836002
EATON / KENWAY 0063836-002 INPUT BOARD 0063836002
EATON / KENWAY 0063836-002 INPUT BOARD 0063836002
EATON / KENWAY 0063836-002 INPUT BOARD 0063836002
EATON 10073074-001 TP08305543773 PCB CONTROL BOARD RECTIFIER HITEC
EATON 10073074-001 TP08305543773 PCB CONTROL BOARD RECTIFIER HITEC
EATON 101073071-001 EAT PCB MONITOR POWERWARE
EATON 101073071-001 EAT PCB MONITOR POWERWARE
EATON 101073071-001 PCB MONITOR POWERWARE
EATON 101073071-001 PCB MONITOR POWERWARE
EATON 15-570-2 CIRCUIT BOARD 155702
EATON 15-570-2 CIRCUIT BOARD 155702
EATON 15-577-5 CIRCUIT BOARD 155775 REV B
EATON 15-577-5 CIRCUIT BOARD 155775 REV B
EATON CORP. / EXIDE 101072375-A PC BOARD A13A9-6L,101072375A
EATON CORP. / EXIDE 101072375-A PC BOARD A13A9-6L,101072375A
EATON DG1-34072FN-C21C POWERXL DRIVE 50/60HP 9702-4009-00P DG134072FNC21C
EATON DG1-34072FN-C21C POWERXL DRIVE 50/60HP 9702-4009-00P DG134072FNC21C
EATON DMOD-40-14350-02 INTERFACE BOARD DMOD401435002
EATON DMOD-40-14350-02 INTERFACE BOARD DMOD401435002
EATON DMOD-40-14350-02 INTERFACE BOARD DMOD401435002
EATON DMOD-40-14350-02 INTERFACE BOARD DMOD401435002
EATON DMOD-40-14350-02 INTERFACE BOARD DMOD401435002
EATON DMOD-40-14350-02 INTERFACE BOARD DMOD401435002
EATON DYNAMATIC 15-493-603 PC BOARD REV.B 15493603
EATON DYNAMATIC 15-493-603 PC BOARD REV.B 15493603
EATON DYNAMIC 15-444-1 DRIVE BOARD 154441
EATON DYNAMIC 15-444-1 DRIVE BOARD 154441
EATON EASY 620-DC-TE PROGRAMMABLE RELAY MOLLER SERIES
EATON EASY 620-DC-TE PROGRAMMABLE RELAY MOLLER SERIES
EATON EX 1500 RT2U UPS POWER SUPPLY 220-240V AC 220-240V AC 1
EATON EX 1500 RT2U UPS POWER SUPPLY 220-240V AC 220-240V AC 1
EATON GHG5127407R0001 PLUG 32A 3P 480-500V 7H
EATON GHG5127407R0001 PLUG 32A 3P 480-500V 7H
EATON MCS11 PRESSURE SWITCHES WITH AUXILIARY CONTACTS 15 BAR IP65
EATON MCS11 PRESSURE SWITCHES WITH AUXILIARY CONTACTS 15 BAR IP65
EATON POWERWARE 103002974-5501 WEB/SNMP/xHUB CARD 098-15126-00-S6, 9910-2934
EATON POWERWARE 103002974-5501 WEB/SNMP/xHUB CARD 098-15126-00-S6, 9910-2934
EATON TE211B CIRCUIT CARD
EATON TE211B CIRCUIT CARD
EATON-KENWAY RS-232C TO TTL TRANSLATOR BOARD 0063919-A
EATON-KENWAY RS-232C TO TTL TRANSLATOR BOARD 0063919-A
EBERLE 0514-13-008-000 MEMORY BOARD S-41 051413008000
EBERLE 0514-13-008-000 MEMORY BOARD S-41 051413008000
EBERLE 0514-13-008-000 MEMORY BOARD S-41 051413008000
EBERLE 0514-13-008-000 MEMORY BOARD S-41 051413008000
EBERLE 0514-21-000-000 POWER SUPPLY BOARD V-41 051421000000
EBERLE 0514-21-000-000 POWER SUPPLY BOARD V-41 051421000000
EBERLINE 10523-01 CIRCUIT BOARD P207, 1052301
EBERLINE 10523-01 CIRCUIT BOARD P207, 1052301
EBERLINE 10523-01 CIRCUIT BOARD P207, 1052301
EBERLINE 10523-01 CIRCUIT BOARD P207, 1052301
EBERLINE 10523-01 CIRCUIT BOARD P207, 1052301
EBERLINE 10523-01 CIRCUIT BOARD P207, 1052301
EBERLINE 10614-02 STABALIZER BOARD 1061402
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