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。
IAG ELETTRONICA SS 0016-6490 PC BOARD REV.A SS00166490
IBM 25L1910 SCSI HARD DRIVE DNES-309170 E182115
IBM 25L1910 SCSI HARD DRIVE DNES-309170 E182115
IBM 25L1910 SCSI HARD DRIVE DNES-309170 E182115
IBM 25L1910 SCSI HARD DRIVE DNES-309170 E182115
IC9-50021-091 TWO CHANNEL ALARM CARD PI-23136
IC9-50021-091 TWO CHANNEL ALARM CARD PI-23136
IC9-50021-093 POWER SUPPLY REGULATOR CARD PI-23228
IC9-50021-093 POWER SUPPLY REGULATOR CARD PI-23228
ICC-A/D CIRCUIT BOARD 40219B
ICC-A/D CIRCUIT BOARD 40219B
ICG MACHINE CENTER 85.08567.04 CIRCUIT BOARD CPU ALS 350 850856704
ICG MACHINE CENTER 85.08567.04 CIRCUIT BOARD CPU ALS 350 850856704
ICG MACHINE CENTER 85.08567.04 CIRCUIT BOARD CPU ALS 350 850856704
ICG MACHINE CENTER 85.08567.04 CIRCUIT BOARD CPU ALS 350 850856704
ICORE 12842-01 POWER SUPPLY BOARD 12843-C, 1284201
ICORE 12842-01 POWER SUPPLY BOARD 12843-C, 1284201
ICORE 12842-01 POWER SUPPLY BOARD 12843-C, 1284201
ICORE 12842-01 POWER SUPPLY BOARD 12843-C, 1284201
ICORE 13521 TIMING BOARD
ICORE 13521 TIMING BOARD
ICORE 13635 CPU BOARD
ICORE 13635 CPU BOARD
ICORE 8383-C POWER SUPPLY BOARD 8383C
ICORE 8383-C POWER SUPPLY BOARD 8383C
ICORE/ ACCUREX 12807-01G CONVERTER BOARD 12807
ICORE/ ACCUREX 12807-01G CONVERTER BOARD 12807
ICORE/ ACCUREX 12856-01C POWER SUPPLY BOARD 12856
ICORE/ ACCUREX 12856-01C POWER SUPPLY BOARD 12856
ICTC CTX-A345 FET MODULATOR PCB CARD
ICTC CTX-A345 FET MODULATOR PCB CARD
ICTC CTX-A345 FET MODULATOR PCB CARD
ICTC CTX-A345 FET MODULATOR PCB CARD
ICUVGA-GWVZBA PCB VZB-11
ICUVGA-GWVZBA PCB VZB-11
IEBHERR ELECTRONIC 9215439-LWN-001.O PCB CARD
IEBHERR ELECTRONIC 9215439-LWN-001.O PCB CARD
IEBHERR ELECTRONIC 9215439-LWN-001.O PCB CARD
IEBHERR ELECTRONIC 9215439-LWN-001.O PCB CARD
IEE 05464 PC BOARD 30425-01
IEE 05464 PC BOARD 30425-01
IEE 30425-01 PC BOARD 05464 REPAIRED
IEE 30425-01 PC BOARD 05464 REPAIRED
IEE 30425-01 PC BOARD 3042501
IEE 30425-01 PC BOARD 3042501
IFM SI5010 FLOW MONITOR EFECTOR I OUT 250MA SCP
IFM SI5010 FLOW MONITOR EFECTOR I OUT 250MA SCP
IGT PCB 3002-07-02 A0382424 / FAST SHIP DHL OR FEDEX
IGT PCB 3002-07-02 A0382424 / FAST SHIP DHL OR FEDEX
IMAJE A27780-C CONTROL BOARD W/ A27965-D BOARD
IMAJE A27780-C CONTROL BOARD W/ A27965-D BOARD
IMAJE PC20000203 PC BOARD 08210065
IMAJE PC20000203 PC BOARD 08210065
IMAJE PC20000203 PC BOARD 08210065
IMAJE PC20000203 PC BOARD 08210065
IME RQ96E AC ANALOGUE AMMETER 500/5A 2IN
IME RQ96E AC ANALOGUE AMMETER 500/5A 2IN
IMPACT SYSTEMS 5015394-01-D1P2 PC BOARD 501539401D1P2
IMPACT SYSTEMS 5015394-01-D1P2 PC BOARD 501539401D1P2
IMPACT SYSTEMS 5015394-01-D1P2 PC BOARD 501539401D1P2
IMPACT SYSTEMS 5015394-01-D1P2 PC BOARD 501539401D1P2
IMPACT SYSTEMS 5015394-01-D1P2 PROCESSOR BOARD 501539401D1P2
IMPACT SYSTEMS 5015394-01-D1P2 PROCESSOR BOARD 501539401D1P2
IMPACT SYSTEMS 5015394-01-D1P2 PROCESSOR BOARD 501539401D1P2
IMPACT SYSTEMS 5015394-01-D1P2 PROCESSOR BOARD 501539401D1P2
IMS A/S CONTROL CARD VER 2.1 WATERTIGHT DOOR R204
IMS A/S CONTROL CARD VER 2.1 WATERTIGHT DOOR R204
INA 2711071 CYLINDRICAL ROLLER BEARING
INA 2711071 CYLINDRICAL ROLLER BEARING
INA 2711071 CYLINDRICAL ROLLER BEARING
INA 2711071 CYLINDRICAL ROLLER BEARING
INDRAMAT 109-0657-4802-02 BOARD
INDRAMAT 109-0657-4802-02 BOARD
INDRAMAT 109-0657-4802-02 BOARD
INDRAMAT 109-0657-4802-02 BOARD
INDRAMAT 109-0657-4802-02 BOARD
INDRAMAT 109-0657-4802-02 BOARD
INDRAMAT 109-0657-4B02-02 PC BOARD 10906574B0202
INDRAMAT 109-0657-4B02-02 PC BOARD 10906574B0202
INDRAMAT 109-0657-4B05-01 PC BOARD PDS2, 10906574B0501
INDRAMAT 109-0657-4B05-01 PC BOARD PDS2, 10906574B0501
INDRAMAT 109-0657-4B05-01 PC BOARD PDS2, 10906574B0501 REPAIRED
INDRAMAT 109-0657-4B05-01 PC BOARD PDS2, 10906574B0501 REPAIRED
INDRAMAT 109-0657-4B05-01 PC BOARD PDS2, 10906574B0501 REPAIRED
INDRAMAT 109-0657-4B05-01 PC BOARD PDS2, 10906574B0501 REPAIRED
INDRAMAT 109-0785-4B14-06 BOARD DSS 1.3 1090785481406
INDRAMAT 109-0785-4B14-06 BOARD DSS 1.3 1090785481406
INDRAMAT 109-0785-4B14-06 BOARD DSS 1.3 1090785481406
INDRAMAT 109-0785-4B14-06 BOARD DSS 1.3 1090785481406
INDRAMAT 109-0785-4B19-03 CONTROLLER CARD 10907854B1903
INDRAMAT 109-0785-4B19-03 CONTROLLER CARD 10907854B1903
INDRAMAT 109-0785-4B20-06 ANALOG INTERFACE BOARD DAA1 10907854B2006
INDRAMAT 109-0785-4B20-06 ANALOG INTERFACE BOARD DAA1 10907854B2006
INDRAMAT 109-0852-3A09-06 BOARD DEA 4.2 10908523A0906
INDRAMAT 109-0852-3A09-06 BOARD DEA 4.2 10908523A0906
INDRAMAT DBS03.1 PC BOARD DBS031
INDRAMAT DBS03.1 PC BOARD DBS031
INDRAMAT DSS2 109-0852-4B01-04 PC BOARD DSS2.1 DSS210908524B0104
INDRAMAT DSS2 109-0852-4B01-04 PC BOARD DSS2.1 DSS210908524B0104
INDRAMAT DSS2 109-0852-4B01-04 PC BOARD DSS2.1 DSS210908524B0104
INDRAMAT DSS2 109-0852-4B01-04 PC BOARD DSS2.1 DSS210908524B0104
INDRAMAT TDM-1.4-050-300-W1-000 AC DRIVE R911252040 TDM14050300W1000
INDRAMAT TDM-1.4-050-300-W1-000 AC DRIVE R911252040 TDM14050300W1000
INDUCTOTHERM 170-7071-5 CIRCUIT BOARD REV. 5A RCI-F 17070715
INDUCTOTHERM 170-7071-5 CIRCUIT BOARD REV. 5A RCI-F 17070715
INDUR LTI-0,6/220-24/E AL-4258 PC BOARD LTI0622024EA AL4258
INDUR LTI-0,6/220-24/E AL-4258 PC BOARD LTI0622024EA AL4258
INDUR TA4/220-160 PC BOARD TA4220160
INDUR TA4/220-160 PC BOARD TA4220160
INDUSTRIAL COMPUTER SOURCE PCDIO24B/48B-P INTERFACE BOARD W/ DRIVER DISK
INDUSTRIAL COMPUTER SOURCE PCDIO24B/48B-P INTERFACE BOARD W/ DRIVER DISK
INDUSTRIAL DYNAMICS 38206-0 INTEGRATOR BOARD 382060
INDUSTRIAL DYNAMICS 38206-0 INTEGRATOR BOARD 382060
INDUSTRIAL MRO 4TB5203-0407 PCB CARD REV F
INDUSTRIAL MRO 4TB5203-0407 PCB CARD REV F
INDUSTRIAL MRO B1HOOVER747..400 CONTROL CARD B1HOOVER747400
INDUSTRIAL MRO B1HOOVER747..400 CONTROL CARD B1HOOVER747400
INFRANOR SMNB-2590 POWER SUPPLY BOARD SMNB2590
INFRANOR SMNB-2590 POWER SUPPLY BOARD SMNB2590
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844 REPAIRED
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844 REPAIRED
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844 REPAIRED
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844 REPAIRED
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844 REPAIRED
INGERSOLL RAND 93947851 POWER FAIL BOARD ASSEMBLY 93947844 REPAIRED
INK SYSTEMS 25015 INTERFACE BOARD 25015B
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