EAM26

  • 发布时间:2017-02-19 12:59:07,加入时间:2015年04月04日(距今3282天)
  • 地址:中国»福建»福州:福建福州市闽侯西江滨大道77号正荣润园1号楼
  • 公司:福州卓凯电子科技有限公司, 用户等级:普通会员 已认证
  • 联系:李涛,手机:13696852881 微信:c677530 电话:0591-22983782 QQ:1273632994

各种输出方式之间的比较

当所有的指令执行完毕时,集中把输出状态寄存器的状态通过输出部件转换成被控设备所能接受的电压或电流信号,以驱动被控设备,这就是输出刷新阶段。PLC经过这五个阶段的工作过程,称为一个扫描周期。完成一个周期后,又重新执行上述过程,扫描周而复始地进行。扫描周期是PLC的重要指标之一,在不考虑第二个因素(与编程器等通信)时,扫描周期T为:

(读入一点时间×输入点数)+(运算速度×程序步数)+(输出一点时间×输出点数)十故障诊断时间

显然扫描时间主要取决于程序的长短,一般每秒钟可扫描数十次以上,这对于工业设备通常没有什么影响。但对控制时间要求较严格,响应速度要求快的系统,就应该精确的计算响应时间,细心编排程序,合理安排指令的顺序,以尽可能减少扫描周期造成的响应延时等不良影响。

(O4-4) WOODHEAD 25405 CORDSET

(Q10-3) 1 FANUC A16B CONTROL BOARD

Fanuc AC Servo Motor A06B-0345-B231 #10564

Total Control Products Quick Panel Jr. III QPK2D100S2P Scratch & Dent #76641

HP / Agilent 11170A BNC (M-M), 12" Length, 50 ohm, Cable Assy.

Black Box SWL030A-FFM, D89 Switches, (2) Female to (1) Male, in Box + Manual

Laser Precision Corp AP-418, 850 nm, Multi-Mode Plug-In, For AP-4200 Series

Stanford Research Systems DG535 Delay / Pulse Generator Op & Programming Manual

Sick Optic Electronic Light Curtain AGSS #51472

EFECTOR KGE2008-FRKG PROX SWITCH

Van Dorn Demag Control Panel 12' TFT-OP #76504

Simco M Hand-Held, Wrist Strap Tester

Bruel & Kjaer (B&K) UD 0035 Tape Loop Cassette, for B&L Recorders, includes Case

(6560) Moore Pressure Current Transmitter PIX/3-15PSIG/4-20MA/12-42DC FL8/N

Robohand Rotary Actuator RR #44538

Modicon Operator Interface MM-KPSD-000 Scratch & Dent #65935

(Q3-3) 1 RELIANCE ELECTRIC PC BOARD OLVC

Mean Well DR 48 V / 2.5A Output, 120W, Din Rail Switching Power Supply

Asco S262SF02N3FJ5, Volt, Normally Open, Vent Valve, + Instructions

Conair PC Board #69134

Marposs Micro Probe Amplifier E3 Scratch & Dent #23102

(V22) 1 GENERAL ELECTRIC CR122BT01102B SOLID STATE TIMER

Westinghouse 600 Amp Breaker LA3600F Scratch & Dent #60452

1151Gp8S22M4B1 Smart Transmitter

Oriental Motor 3GN36KA 36:1 Ratio, 3/8" Shaft Diameter, Parallel Gear Head,

GE PRO100 Rapper Control Interface SEALED

Siemens Power Supply 6ES5 951-7LD12 #23547

GE PC Board 872D-420-0

Physik Instrumente P-263 0 to 1,500 Volts, 3 Channel, High Voltage Power Supply

(X2-4) 1 NIB ELECTROMATIC DUPLINE 128 FPD 1902 120 CHANNEL GENERATOR

Emerson Controller #14737

Abb Robotics Servo Motor 1 FT3074-5AZ21-9-Z #56704

Tektronix TDS 410A, 420A & 460A Digitizing Oscilloscopes Manual,

Brueninghaus Hydromatik A10VSO 28 DFR1/31 R-PPA 12 N00-SO4 Scratch & Dent #54211

(X9-2) 1 NIB ABB TB84PH PH ANALYZER

(X7-3) 1 P&H HARNISCHFEGER 54BB23EENK ROTARY LIMIT SWITCH

Fairview Microwave 18S10W-10, DC to 18.0 GHz, SMA, Coaxial Fixed Attenuator

Cutler Hammer 39PKH PM 3000 POWER SERIES #76900

Barber Colman Insta-Set Module 80BB #3427

(6559) Moore Ind. Thermocouple Transmitter TCX/J10-20MVFS/4-20MA/12-42DC

(5064) Siemens Auxiliary Switch A01FD62 Molded Case Circuit Breaker

联系我时请说明来自志趣网,谢谢!

免责申明:志趣网所展示的信息由用户自行提供,其真实性、合法性、准确性由信息发布人负责。使用本网站的所有用户须接受并遵守法律法规。志趣网不提供任何保证,并不承担任何法律责任。 志趣网建议您交易小心谨慎。