福建中立恒自动化设备有限公司
1.输入/输出单元
输入/输出单元通常也称I/O单元或I/O模块,是PLC与工业生产现场之间的连接部件。
PLC通过输入接口可以检测被控对象的各种数据,以这些数据作为PLC对被控制对象进行控制的依据;同时PLC又通过输出接口将处理结果送给被控制对象,以实现控制目的。
由于外部输入设备和输出设备所需的信号电平是多种多样的,而PLC内部CPU的处理的信息只能是标准电平,所以I/O接口要实现这种转换。
I/O接口一般都具有光电隔离和滤波功能,以提高PLC的抗干扰能力。另外,I/O接口上通常还有状态指示,工作状况直观,便于维护。
PLC提供了多种操作电平和驱动能力的I/O接口,有各种各样功能的I/O接口供用户选用。I/O接口的主要类型有:数字量(开关量)输入、数字量(开关量)输出、模拟量输入、模拟量输出等。
常用的开关量输入接口按其使用的电源不同有三种类型:直流输入接口、交流输入接口和交/直流输入接口。
常用的开关量输出接口按输出开关器件不同有三种类型:是继电器输出、晶体管输出和双向晶闸管输出。
继电器输出接口可驱动交流或直流负载,但其响应时间长,动作频率低;而晶体管输出和双向晶闸管输出接口的响应速度快,动作频率高,但前者只能用于驱动直流负载,后者只能用于交流负载。
PLC的I/O接口所能接受的输入信号个数和输出信号个数称为PLC输入/输出(I/O)点数。I/O点数是选择PLC的重要依据之一。当系统的I/O点数不够时,可通过PLC的I/O扩展接口对系统进行扩展。
2.通信接口
PLC配有各种通信接口,这些通信接口一般都带有通信处理器。
PLC通过这些通信接口可与监视器、打印机、其它PLC、计算机等设备实现通信。
PLC与打印机连接,可将过程信息、系统参数等输出打印;与监视器连接,可将控制过程图像显示出来;与其它PLC连接,可组成多机系统或连成网络,实现更大规模控制。
与计算机连接,可组成多级分布式控制系统,实现控制与管理相结合。远程I/O系统也必须配备相应的通信接口模块。
3.智能接口模块
智能接口模块是一独立的计算机系统,它有自己的CPU、系统程序、存储器以及与PLC系统总线相连的接口。
它作为PLC系统的一个模块,通过总线与PLC相连,进行数据交换,并在PLC的协调管理下独立地进行工作。
PLC的智能接口模块种类很多,如:高速计数模块、闭环控制模块、运动控制模块、中断控制模块等。
SNUBBER EMRI PCB MODULE
SNUBBER EMRI PCB MODULE
SOFTSWITCHING TECHNOLOGIES 98-20107C CIRCUIT BOARD SST031787 98-00140SFT
SOFTSWITCHING TECHNOLOGIES 98-20107C CIRCUIT BOARD SST031787 98-00140SFT
SOLARTRON 24610501B CIRCUIT BOARD CHK-117 24619501B
SOLARTRON 24610501B CIRCUIT BOARD CHK-117 24619501B
SOLID STATE CONTROLS 80-221401-90 CIRCUIT BOARD 8022140190
SOLID STATE CONTROLS 80-221401-90 CIRCUIT BOARD 8022140190
SOLID STATE CONTROLS 80-9209145-90 OSCILLATOR BOARD 80920914590
SOLID STATE CONTROLS 80-9209145-90 OSCILLATOR BOARD 80920914590
SOLID STATE CONTROLS SC1 213039 PC BOARD REV.A 213039 SC1213039
SOLID STATE CONTROLS SC1 213039 PC BOARD REV.A 213039 SC1213039
SOLID STATE RELAY 7605-0290-00 RELAY BOARD ASSY#7605-0300-00 7605029000
SOLID STATE RELAY 7605-0290-00 RELAY BOARD ASSY#7605-0300-00 7605029000
SOLIDSTATE 80-9210502-90 CIRCUIT BOARD 80921050290
SOLIDSTATE 80-9210502-90 CIRCUIT BOARD 80921050290
SOLIDSTATE CONTROLS 210820 VOLT SENSING BOARD SCI 411083
SOLIDSTATE CONTROLS 210820 VOLT SENSING BOARD SCI 411083
SOLIDSTATE CONTROLS 2-18-84 212901 PCB CIRCUIT BOARD 21884
SOLIDSTATE CONTROLS 2-18-84 212901 PCB CIRCUIT BOARD 21884
SOLIDSTATE CONTROLS 2-18-84 212901 PCB CIRCUIT BOARD 21884
SOLIDSTATE CONTROLS 80-209140-90 PC BOARD REV.C 8020914090
SOLIDSTATE CONTROLS 80-209140-90 PC BOARD REV.C 8020914090
SOLIDSTATE CONTROLS 80-212710-90 CIRCUIT BOARD 8021271090
SOLIDSTATE CONTROLS 80-212710-90 CIRCUIT BOARD 8021271090
SOLIDSTATE CONTROLS 80-212710-90 CIRCUIT BOARD 8021271090
SOLIDSTATE CONTROLS 80-212710-90 CIRCUIT BOARD 8021271090
SOLIDSTATE CONTROLS 80-213515-90 STD-1 CREST FACTOR BOARD 8021351590 STD1
SOLIDSTATE CONTROLS 80-213515-90 STD-1 CREST FACTOR BOARD 8021351590 STD1
SOLIDSTATE CONTROLS 80-213515-90 STD-1 CREST FACTOR BOARD 8021351590 STD1
SOLIDSTATE CONTROLS 80-213515-90 STD-1 CREST FACTOR BOARD 8021351590 STD1
SOLIDSTATE CONTROLS 80-215506-90 CIRCUIT BOARD 8021550690
SOLIDSTATE CONTROLS 80-215506-90 CIRCUIT BOARD 8021550690
SOLIDSTATE CONTROLS 80-221401-90 CIRCUIT BOARD 8022140190
SOLIDSTATE CONTROLS 80-221401-90 CIRCUIT BOARD 8022140190
SOLIDSTATE CONTROLS 80-221401-90 CIRCUIT BOARD 8022140190
SOLIDSTATE CONTROLS 80-221401-90 CIRCUIT BOARD 8022140190
SOLIDSTATE CONTROLS SCI 212710 CONTROL BOARD
SOLIDSTATE CONTROLS SCI 212710 CONTROL BOARD
SOLIDSTATE CONTROLS SCI 411083 210831 VOLTAGE SENSING BOARD
SOLIDSTATE CONTROLS SCI 411083 210831 VOLTAGE SENSING BOARD
SOLIDSTATE CONTROLS SCI 411083 210831 VOLTAGE SENSING BOARD
SOLIDSTATE CONTROLS SCI 411083 210831 VOLTAGE SENSING BOARD
SOMERSET Z80A CPU CARD REV. 1.1/B ECB/C64
SOMERSET Z80A CPU CARD REV. 1.1/B ECB/C64
SOMET TH-532 CIRCUIT BOARD TH532 MCPU-93-06
SOMET TH-532 CIRCUIT BOARD TH532 MCPU-93-06
SOMET TH-532 CIRCUIT BOARD TH532 MCPU-93-06
SOMET TH-532 CIRCUIT BOARD TH532 MCPU-93-06
SOMET TH-580 CIRCUIT BOARD TH580 TH-580/590 LS
SOMET TH-580 CIRCUIT BOARD TH580 TH-580/590 LS
SOMET TH-580 CIRCUIT BOARD TH580 TH-580/590 LS
SOMET TH-580 CIRCUIT BOARD TH580 TH-580/590 LS
SOMET TH-580 CIRCUIT BOARD TH580 TH-580/590 LS
SOMET TH-580 CIRCUIT BOARD TH580 TH-580/590 LS
SOMET TH710 CIRCUIT BOARD TH710/A
SOMET TH710 CIRCUIT BOARD TH710/A
SOMET TH710 CIRCUIT BOARD TH710/A
SOMET TH710 CIRCUIT BOARD TH710/A
SOMET TH731N CIRCUIT BOARD TH730
SOMET TH731N CIRCUIT BOARD TH730
SONARDYNE PCB 8000-042 ISS.C 881-3091 / FAST BY DHL / FEDEX
SONARDYNE PCB 8000-042 ISS.C 881-3091 / FAST BY DHL / FEDEX
SONARDYNE SOUND IN DEPTH PCB 631-7612 REV G / FAST BY DHL / FEDEX
SONARDYNE SOUND IN DEPTH PCB 631-7612 REV G / FAST BY DHL / FEDEX
SONARDYNE SOUND IN DEPTH PCB 631-7612 REV G / FAST BY DHL / FEDEX
SONARDYNE SOUND IN DEPTH PCB 631-7612 REV G / FAST BY DHL / FEDEX
SONG PC-100EA PCB CARD / FAST SHIP DHL OR FEDEX
SONG PC-100EA PCB CARD / FAST SHIP DHL OR FEDEX
SONG PC-100EA PCB CARD / FAST SHIP DHL OR FEDEX
SONG PC-100EA PCB CARD / FAST SHIP DHL OR FEDEX
SONG PC-100EA PCB CARD / FAST SHIP DHL OR FEDEX
SONG PC-100EA PCB CARD / FAST SHIP DHL OR FEDEX
SONG PC-100EA PCB CARD / FAST SHIP DHL OR FEDEX
SONG PC-100EA PCB CARD / FAST SHIP DHL OR FEDEX
SONY DAS-PCB 1-618-400-12 BOARD
SONY DAS-PCB 1-618-400-12 BOARD
SONY DAS-PCB 1-618-400-12 BOARD
SONY DAS-PCB 1-618-400-12 BOARD
SONY DAS-PCB 1-618-400-12 BOARD
SONY DAS-PCB 1-618-400-12 BOARD
SONY DAS-PCB 1-618-400-12 BOARD
SONY DAS-PCB 1-618-400-12 BOARD
SONY DAS-PCB 1-618-400-12 BOARD
SONY DAS-PCB 1-618-400-12 BOARD
SOREN T. LYNGSO 60009602 V01 PCB CARD 508179 W 9042
SOREN T. LYNGSO 60009602 V01 PCB CARD 508179 W 9042
SOREN T.LYNGSO 60009602 V01 PCB CARD 393843 W 9038 600 097 103
SOREN T.LYNGSO 60009602 V01 PCB CARD 393843 W 9038 600 097 103
SOREN T.LYNGSO 60009602 V01 PCB CARD 393844 W 9038
SOREN T.LYNGSO 60009602 V01 PCB CARD 393844 W 9038
SOREN T.LYNGSO 60900401 VO1 NR 533698 W 9138 064.530.301 PCB CARD
SOREN T.LYNGSO 60900401 VO1 NR 533698 W 9138 064.530.301 PCB CARD
SOREN T.LYNGSO 609004110 VO1 NR 402998 W 9042 064.515.103 PCB CARD
SOREN T.LYNGSO 609004110 VO1 NR 402998 W 9042 064.515.103 PCB CARD
SOREN T.LYNGSO 609004410 NR 403331 W 9025 064.509.503 PCB CARD
SOREN T.LYNGSO 609004410 NR 403331 W 9025 064.509.503 PCB CARD
SOREN T.LYNGSO 609004610 V01 PCB CARD 404019
SOREN T.LYNGSO 609004610 V01 PCB CARD 404019
SOREN T.LYNGSO 609004610 V01 PCB CARD 404019
SOREN T.LYNGSO 609004610 V01 PCB CARD 404019
SOREN T.LYNGSO 609004610 VO1 NR 404019 W 9025 064.511.503 PCB CARD
SOREN T.LYNGSO 609004610 VO1 NR 404019 W 9025 064.511.503 PCB CARD
SOREN T.LYNGSO 609004610 VO1 NR 404019 W 9025 064.511.503 PCB CARD
SOREN T.LYNGSO 609004610 VO1 NR 404019 W 9025 064.511.503 PCB CARD
SOREN T.LYNGSO 609004610 VO1 NR 404019 W 9025 064.511.503 PCB CARD
SOREN T.LYNGSO 609004610 VO1 NR 404019 W 9025 064.511.503 PCB CARD
SOREN T.LYNGSO 60901221 VO1 NR 517194 W 9104 064.529.103 PCB CARD
SOREN T.LYNGSO 60901221 VO1 NR 517194 W 9104 064.529.103 PCB CARD
SOREN T.LYNGSO 90036381 V01 PCB CARD 399606 W 9019 608 067 502
SOREN T.LYNGSO 90036381 V01 PCB CARD 399606 W 9019 608 067 502
SOTREQ MURPHY D-399 SWITCH GAUGE SBHVB004
SOTREQ MURPHY D-399 SWITCH GAUGE SBHVB004
SOTREQ MURPHY D-399 SWITCH GAUGE SBHVB004
SOTREQ MURPHY D-399 SWITCH GAUGE SBHVB004
SOUTHERN AVIONICS 880923 AUTOTRANSFER LOGIC PWB99 PCB CARD SLP09904
SOUTHERN AVIONICS 880923 AUTOTRANSFER LOGIC PWB99 PCB CARD SLP09904
SOUTHERN AVIONICS 880923 AUTOTRANSFER LOGIC PWB99 PCB CARD SLP09904
SOUTHERN AVIONICS 880923 AUTOTRANSFER LOGIC PWB99 PCB CARD SLP09904
SOUTHERN AVIONICS CO ACTRL PCB SRP30400 REV P / FAST SHIP DHL OR FEDEX
SOUTHERN AVIONICS CO ACTRL PCB SRP30400 REV P / FAST SHIP DHL OR FEDEX
SOUTHERN AVIONICS CO ACTRL PCB SRP30400 REV P / FAST SHIP DHL OR FEDEX
SOUTHERN AVIONICS CO ACTRL PCB SRP30400 REV P / FAST SHIP DHL OR FEDEX
SOUTHERN AVIONICS KWOSYN PCB SRP 16300 REV.G / FAST SHIP DHL OR FEDEX
SOUTHERN AVIONICS KWOSYN PCB SRP 16300 REV.G / FAST SHIP DHL OR FEDEX
SOUTHERN AVIONICS KWOSYN PWB 163 PCB CARD 950925
SOUTHERN AVIONICS KWOSYN PWB 163 PCB CARD 950925
SOUTHERN AVIONICS PWB142 AUTOTUNE MOTOR DRIVE PCB CARD 850827 REV H
SOUTHERN AVIONICS PWB142 AUTOTUNE MOTOR DRIVE PCB CARD 850827 REV H
SOUTHERN AVIONICS PWB142 AUTOTUNE MOTOR DRIVE PCB CARD 850827 REV H
SOUTHERN AVIONICS PWB142 AUTOTUNE MOTOR DRIVE PCB CARD 850827 REV H
SOUTHERN AVIONICS SLP09701 SSK CODER SHIFT REGISTER PCB CARD PWB 97 REV C
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