目前来说V80是一款的小型PLC而我们的V60则是一款经济型的PLC产品，如果能在未来的两年内我能收集足够多的资金和人才把我心目中的N系列开发完毕并流片，则我相信我们一定可以突破敌人的层层防线终成长成一个有影响力的控制器厂商。

PLC系统设计时，首先应确定控制方案，下一步工作就是PLC工程设计选型。工艺流程的特点和应用要求是设计选型的主要依据。PLC及有关设备应是集成的、标准的，按照易于与工业控制系统形成一个整体，易于扩充其功能的原则选型所选用PLC应是在相关工业领域有投运业绩、成熟可靠的系统，PLC的系统硬件、软件配置及功能应与装置规模和控制要求相适应。熟悉可编程序控制器、功能表图及有关的编程语言有利于缩短编程时间，因此，工程设计选型和估算时，应详细分析工艺过程的特点、控制要求，明确控制任务和范围确定所需的操作和动作，然后根据控制要求，估算输入输出点数、所需存储器容量、确定PLC的功能、外部设备特性等，后选择有较高性能价格比的PLC和设计相应的控制系统。

　　一、输入输出（I/O）点数的估算



Siemens Simatic 6ES5 304-3UA12, Interface Module

Square D Transformer disconnect 9070 SK3000G2 NEW inBOX

NSK W3614-146D-C5Z Ballscrew, & Nut 48" travel NEW

Square D WMB361-362 Transformer bracket NEW in BOX

Control Chief 8002-4009 Board Rebuilt

Modicon AS-P451-622 remote I/O, MA-P450 Power supply

Allen-Bradley 8000 MBA Module 905981-05 Rev A

GE 300 Line size #3 Motor starter CR306E1 XAAA, NEW

Allen-Bradley 8000-GA circuit board 30 day return 

Allen-Bradley 8000-IOC circuit board 30 day return 

Allen-Bradley 8000-IOA circuit board 30 day return 

TOPAZ 68025-05 250VA,220/240v 50HZ power conditionerNEW

TOPAZ 68050-05 500VA,220/240v 50HZ power conditionerNEW

Hoffman Specialty 400562 Thermostatic Regulator NEW

Hyde Park SM572B-100 & cable AC105 Ultrasonic sensorNEW

Klockner-Moelle​r NZMH9-250, w/ ZM9a-200-NA trip, 250A,

SQUARE D Circuit breaker LA3250 250AMP

Square D MAL36450 Circuit Breaker 450 Amp

Selti SL/8000, 12" EGA monitor, Repaired, 

Square D Plate Resistor Tab WELD TW500-D NEW in BOX

Square D Plate Resistor Tab WELD TW72-D NEW in BOX

Square D Plate Resistor Tab WELD TW360-D NEW in BOX

Thermo Disc 14T21 30358 4554068 L100F LOT of 100 NEW`

Bridgeport 1920140 Drive Rebuilt

Infrared Engineering MM55 head controller Repaired

Electrica RVA2AMKC, 820ARR3C29 Relay Case of 100 NEW

24 Sporlan Thermostatic expansion valves Y1072-BIS NEW

Fincor 2200 DC controller Repaired by Electricial Sout

Telemecanique Altivar5, ATV452U22N, 3hp 460v, 3P 1-80hz

Allen-Bradley 500L-C0D94 Lighting contactor New

Allen-Bradley 281D F12Z 10B CR combi-reversing starter 

Donaldson 8PP-36773-00 Checker Board NEW

Motoman board# 471920-1 Low pass filter for COM-ARC NEW

Square D PQ4203 30A, 240V Bus Plug, I Line *NEW*

Square D NQOD424L100CU 100A panelboard interior NEW

Liros Type: NO STATIC-09, Electrostatic Discharger NEW

Banner MRS4824Y, Light Curtain New in Box

GTR Brother gearmotor, BG3FB40-200TM4S​, 200:1, NEW

Sharpe 3", 316SS, Ball Valve, CF8M, Seat PTFE Stem 316

Parametrics 6030 AC drive, 6030-00, 3hp, 230v,

Flowserve 0706-9485002 1 1/4" pump B030434 1hp New 

Crown Barnes SB12, 2COTD-0005-F-00​8 Pump Rebuilt

Texas Instruments 5TI-1031-1, Sequencer, REBUILT

Siemens TI, 500-6850A Remote Base Controller Used 

HC Power HC10-C1471A, 10A0001-165 High Power Switch NEW

Carrier HD52VE214, 5K49UN6084S, 1hp, GE motor NEW 

Baldor ID10401-E 1.5-1.8KVA 2.3A 400-460v 50/60hz Drive

Dover Flexo Electronics Tension Transducer 5620, SC2D, 

Allen-Bradley 193-A4R6J Automatic Reset Overload NEW

ITE UV 363, 100A, 600v, 3ph, Bus plug 

Phoenix Contact 2752945, Interbus IBSTME24DIO/8/8​/3-2A

Phoenix Contact 2751616, IBSTME24CNT, 4 Counter, 24v

Temposonics TTSRBM0900AS1U, Transducer, 900mm, NEW

Allen-Bradley 8000-MDAZ circuit board 30 day return 

Allen-Bradley 8000-MDA circuit board 30 day return 

ARO LM2203A-41 Thunder Series Pump NEW 

Sato M 8400S, M8400S, Rebuilt print head, E133836

Sti 43815-1104, MC4-1104, Safety Mat Controller NEW

Sti 43939-0010, MC6 Safety Mat Controller NEW

Sti 43939-0114, MC6 Safety Mat Controller NEW

Sti 82401-2016, MC6 Safety Mat Controller NEW

Sti 43815-0014, MC4 Safety Mat Controller NEW

Ircon Modline 2 color Pyrometer 1300-2500F, R25F05011, 

Ircon Modline 2 color Pyrometer 1300-2500F, R25F05011, 

Ircon Modline AUTOMATIC OPTICAL PYROMETER 1500-2500F