15340667322
热门搜索：
PLC的对外功能，主要是通过各种I/O接口模块与外界联系的，按I/O点数确定模块规格及数量，I/O模块可多可少，但其大数受所能管理的基本配置的能力，即受大的底板或机架槽数限制。I/O模块集成了PLC的I/O电路，其输入暂存器反映输入信号状态，输出点反映输出锁存器状态。
三、电源模块：
有些PLC中的电源，是与模块合二为一的，有些是分开的，其主要用途是为PLC各模块的集成电路提供工作电源。同时，有的还为输入电路提供24V的工作电源。电源以其输入类型有：交流电源，加的为交流220VAC或110VAC，直流电源，加的为直流电压，常用的为24V。
四、底板或机架：
大多数模块式PLC使用底板或机架，其作用是：电气上，实现各模块间的联系，使能访问底板上的所有模块，机械上，实现各模块间的连接，使各模块构成一个整体。
五、PLC的外部设备
Tektronix TM 503 Power Module PG501-PG505 Tek TM503 GUR
Tektronix P6022 Current Probe + Termination 6022 TESTED
TEKTRONIX TLA 7N4 LOGIC ANALYZER OPTION 6S 136 CHANNEL
Tektronix 2430 Dual Trace Digital Oscilloscope 150MHz
Expedited shipping available
TEKTRONIX 91HS8 HIGH SPEED ACQUISITION
Tektronix P7380 8 GHz Differential Probe / Parts
Tektronix TLS 216 Logic Scope
One-day shipping available
TEKTRONIX DS 1000 TELEVISION DEMODULATOR - ON SALE!
TEKTRONIX 1910 DIGITAL GENERATOR, EXCELLENT CONDITION!
TEKTRONIX 2430A 150MHZ DIGITAL STORAGE OSCILLOSCOPE
probes pouch man 30 day return 1 year prorated warranty
Tektronix P7240 4Ghz Probe ACCESSORIES #5 Tested
Tektronix RFM151Signal Scout Cable VRF Analyzer.
Tektronix CAGE 80009 card
Tektronix 2232 100Mhz Digital Storage Oscilloscope
NIST Calibrated, GPIB, New Probes, 1 Year Warranty.
TEKTRONIX CMD80 DIGITAL RADIO COMMUNICATIONS TESTER
Tektronix 2431L Digital Oscilloscope
Tektronix WFM300A Composite Waveform Monitor
Tektronix P7240 4Ghz Probe ACCESSORIES #2 Calibrated
Tektronix 1750 Waveform / Vector Monitor (Reduced)
Sony/Tektronix DG2020A Data Generator
Tektronix TSG120 YC/NTSC Signal Generator
Expedited shipping available
TEKTRONIX DSA 602A DIGITIZING ANALYZER 11A16 11A32
Tektronix 1910 NTSC Generator
Tektronix P7380-SMA 8GHz Differential Probe
complete in case
Tektronix TDS 220 Digital Real-Time oscilloscope
Tektronix WFM601A SDI Component WF Monitor NEW IN BOX
Tek 2467B Scope - Clean, ** Working w/ warranty
Tektronix 4105 Computer Display Terminal
Tektronix TDS460 Digital Oscilloscope: 350 MHz, 4 Ch.
One-day shipping available
TEKTRONIX 1103 TEKPROBE POWER SUPPLY OSCILLOSCOPE
Tektronix TEK R7912 Transient Digitizer Chassis
Tektronix AG7 Audio Generator For the TG700
Tektronix 2230 Tektronix 2230 Digital/Analog Oscillosco
Tektronix AA5001 Distortion Analyzer
Tektronix P6339A Buffered Passive Probe
Tektronix 764 Digital Audio Monitor & WFM-601A Waveform
TEKTRONIX P7260 ACTIVE PROBE, 6 GHz w/ CASE
Tektronix TDS 340 TDS340 digital scope, NISTcalibrated
additional free NIST recalibration within one year
Tektronix 141A PAL generator, guaranteed, 7 day ROR