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A02B-0236-C127,

A02B-0236-C127

该体系采用PLC作为操控中心，完成PID闭环运算、多泵上下行切换、显示、故障确诊等功用，由变频器调速方法主动调理水泵电机转速，达到恒压供水的意图。

　　一、前语

　　跟着操控技术的发展与完善，变频器及PLC在各个行业的使用愈来愈广，PLC与变频器的可靠性与灵活性得到了用户的认可。一起传统的水塔供水方法暴露了许多缺点：水的二次污染，用水高低峰的不平衡，管道阀门易损坏，维修保养费用过高等等。在此条件下各种恒压供水方法应运而生，其间由变频器、PLC操控的方法尤为遍及，这种方法的特色：体系稳定，功用强大，变频器用于供水更加节能，所以广泛使用在多层住宅小区生活消防供水体系中，现在许多场合也有使用，比方中央空调体系、供水加压站、集中供热等，这种方法经受了时刻的考验，已有许多的使用实例。本文介绍的体系在宝鸡某电厂家属区已从98年运转至今，体系稳定，性能可靠，得到了用户的必定和好评。

　　二、体系组成：

　　1、体系概述：

　　该体系由四台大泵(22KW)与一台小泵(5.5KW)组成;PLC部分由西门子可编程操控器S7-200系列的CPU226，文本显示器TD200组成;变频器采用三菱FR-A540系列，功率22KW。

　　用户所需的生活用水压力、消防用水压力、运转方法等参数在TD200文本显示器上设定，压力传感器把用户管网压力转换为0-10V标准信号送进PLC模拟量模块EM235，PLC经过采样程序及PID闭环程序与用户设定压力构成闭环，运算后转换为PLC模拟量输出信号送给变频器，调理水泵电机转速，达到恒压供水的意图。

　　该体系有各个泵的运转时刻累计功用，经过PLC的数据区保持可以断电回忆。每次起动时先起动1#小泵，当用水量超越一台泵的供水能力时，PLC经过程序完成泵的延时上行切换，切换原则为当前未运转的大泵累计运转时刻最少的先投入;当压力超越时，PLC经过程序完成泵的延时下行切换，切换原则为当前正在运转的大泵运转时刻最多的先撤出。直到满足设定压力为止。寻求的最终目标为压力恒定。

　　当供水负载变化时，变频器的输出电压与频率变化主动调理泵的电机转速，完成恒压供水。

　　体系还可经过PLC的实时时钟主动守时供水，用户在TD200上设定每天最多6段(段数也可设定)守时供水，比方早上6：00到8：30，中午11：20到1：30等。

　　体系可动态显示各种参数，如设定压力，运转压力，水位高度，运转方法，实时时刻，日历，各个泵的运转时刻累计(准确到秒)，运转状况，故障信息等等。为了不使体系中TD200画面显得呆板，在PLC程序中操控TD200中的画面守时切换，动态显示;

　　体系还有故障自确诊功用，各泵发作过载、缺相、短路、传感器断线、传感器短路、水位下限、水压超高、水压超低、变频器故障等，都会有声光报警，TD200上一起显示故障类型，告诉设备维修人员处理，并可回忆故障发作时刻及班次，以便追查原因及相关责任。

　　2、作业原理：主动手动方法

　　(1)手动运转时，可按下按钮起动中止水泵在工频状况下运转，彻底脱离开PLC及变频器的操控，该功用首要用在检修及主动体系出现故障时的应急供水方法中。

　　(2)主动运转时，悉数泵的运转依程序主动作业。

　　上行过程：当在主动运转方法时，按下TD200上的起动软健，体系先起动1#小泵，PLC程序操控模拟量模块EM235给定变频器一固定频率输出，此时若用 PID运算输出直接操控变频器则(设定压力大，运转压力为零，所以运算输出最大)变频器依设定的上升时刻运转，升速太快，体系冲击很大。等泵运转一会儿，管网压力堆集后，再用PID运算输出操控变频器。具体时刻和频率与管网体系有关，在现场调试时这两个参数在TD200上设定调整。管网越大，时刻越长。

　　当 1#小泵达到50HZ后，体系压力仍偏低，则延时一段时刻后，体系靠PLC程序把1#泵切换到工频运转，一起由PLC输出一个开关量给变频器的MRS端子，变频器瞬间制止输出，此时PLC把运转时刻最少的泵变频接触器接通后，撤掉制止输出，相应的泵变频起动运转;延时切断1#小泵，体系中相应的一台大泵变频运转，压力主动调理，若体系压力平衡，则频率稳定在一个相对的规模，若频率达到50HZ后压力依然偏低，则再投入一台大泵，比较剩下的泵的累计运转时刻，时刻少的先行投入，以此类推。注意，上行中，只要有一台大泵运转，则1#小泵要断开，大泵与小泵一起运转时，小泵的功率很低。

　　下行过程：当体系压力偏高，变频器运转在18HZ左右(18HZ以下泵的功率很低，经验值)时，PLC程序判断运转在工频状况的泵累计运转时刻(若只有一台泵不作判断)，运转时刻最多的泵延时先行撤出，在撤出的瞬间，PLC操控变频器运转频率在50HZ，要不体系冲击过大，简单有水垂现象，延时一会儿后，再把 PID运算输出投入即可;以此类推。注意：下行过程中，到最后一台大泵运转时，频率在18HZ左右，体系压力依然偏高时，则把1#小泵切换到变频运转。这种情况在夜间或许发作，当供水管网很大时，也许没有这个或许性。

　　三、注意事项：

　　1、该体系中有泵的工频变频上行切换，为了体系的快速响应，切换时刻最好越短越好，切换时时刻差很小，所以各个泵的变频接触器与工频接触器最好用可逆接触器，电气线路与PLC程序中也要有互锁功用。避免发作意外短路事端。对体系或变频器形成危害。

　　2、变频器上行下行切换时刻设定，假如设定值过大，则体系不能迅速对管网的用水量做出反应;假如设定值过小，则或许引起体系频繁的投入泵，撤出泵的动作;为此，PLC程序中增加判断设定压力与运转压力在临界切换状况时，只要不超越答应的误差规模内，不做泵的切换。

　　3、变频器在上行切换时，必须要有瞬间制止输出功用，变频器没有此功用可用自在停车功用;所以选择变频器时要注意这点。

上亿库存，国内外近千个仓库，公司部分产品型号如下，欢迎联系哦~！

MTR-3S65-H-R-0-E-S MTR series servo motor with resolver and shaft seal

TGT-R0P0-2-0 Target series rack with power supply and two spare modules with fans

20BD8P0A3AYYAEC1 PowerFlex 700 AC Drive 8 A 5 Hp 20B

20F14NC140AN0NNNNN PowerFlex 753 AC Packaged Drive

22B-E6P6C104 PowerFlex 40 4 kW (5 Hp) AC Drive

2711P-T12C4D8 PanelView Plus Terminal

284E-FVD1P4Z-10-CR-SB EtherNet Variable Frequency Drive

D4NA-412G 触点:1开/1闭,10A 250VAC机械寿命:1000万次 可调滚珠摆杆型（金属摆杆、树脂滚珠）

1492-MUA1B-A4-A7 1771 - 1756 Conversion Mounting Assembly

模拟量输入/输出模块SM 6ES7 332-5HF00-0AB0 AO/8 通道，电压、电流，光电隔离，40pin 前连接器

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1585J-M8HB-10 RJ45 Ethernet Media

1756-SPESMNSE L7SP Energy Storage Module-No Energy

188-K1D320 Miniature Circuit Breaker 32 A

194E-Y32M-1753-6N 32 A 194E Load switch

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2090-UXNPAMP-10S09 MP-Series 9 m Length Power Cable

BC646TRT935 Server 35,000 I/O Runtime System with Proficy GlobalCare

GC647IFPLSR00150 GCC iFIX Plus SCADA 150 I/O Srv

IC200CBL605 AB SLC 500, RJ-45, RS-484 Cable to DataPanel 45/65/85

IC646MPS010 Logic Developer PLC Standard 10 Pack

IC647IFSCTSSPRT05C iFIX TS SCADA Support on SCADA -5 Clients OEM (M1Component Part)

IC670ALG230RR Analog Input Current 8 Pt. Grouped

IC697CPU780 Hot Standby Redundancy CPU, 386, 12K Discrete I/O, Exp. Mem., Floating Pt.

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Process Control 1757-FIMEXP050 FOUNDATION FIELDBUS FIM MODULE EXPANSION

Operator Interface 2711P-RDB10C PV PLUS 1000, KEY/TOUCH SCREEN DISPLAY MODULE

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Motion Control 2090-DAPC-D0909 CABLE, NON-FLEX, CN3 SERIAL COMMUNICATIONS, 09M

CBL-115 Cable. Modicon 984 Modbus (RS-232)

IC5008TBX0000 18" Unbundled Intelligence Industrial Computer with WIN XP Performance Series

IC800PCUBC04S030 PowerCube Flying Lead Interface Cable, 400 Steps/Rev & Power Save Enabled, 3 Meters

OC647IFESGDV00075M iFIX Optn: ESig & ERec 75 I/O Development (M4 Part)

20AD027A3AYNACC0 PowerFlex 70 AC Drive 27 A at 20 Hp 20A

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20L-GH10-A1 Hose Kit,(2)10 Ftx1 In. Dia.,W/ Fittings

25C-E4P2N104 PowerFlex 527 2.2kW (3Hp) AC Drive

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ET 200SP 6ES7193-6BP20-0BB1 基座单元 BU20-P12+A0+4B ，类型B1，直插式端子，适用于交流输入/输出模块，20mm宽

1585D-M4TBJM-2 Micro D-Code, QD Style Ethernet Media

1756-EWEB ControlLogix ENET/IP Web Server Module

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194E-DA16 194E Load switch

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2090-DANPT-16S15 TL-Series 15 m Length Power Cable

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IC756WET100K-22 Custom Editor Toolkit, Korean, Version 2.2

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RSI Software Products 9301-2SE2200PTE RSVIEW32 WORKS 300 (PORTUGUESE)

RSI Software Products 9701-VWSB000FRU3 RSV SE STATION 250 - UNLTD DISP UPGRADE (FRENCH)

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IC300CBF000 FOX Fiber Cable Pair, 0.5M

IC752DTX350 DataPanel 35, 2 x 20 VF message center, used DataDesigner to program messages

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ZA06B-6079-K814 Motor power straight connector for B22/2000is motor

20BE2P7A0AYNAND0 PowerFlex 700 AC Drive 2.7 A at 2 Hp 20B

20G14TC567JN0NNNNN PowerFlex 755 AC Packaged Drive

25-RF035-DL PowerFlex 520 34.8A 230V EMC Filter Kit

2711P-RW7 PanelView Plus CE Accessory

FRN 2 2 P11S-4CX 3 4 KVA 44A 22KW 3相AC380V/50Hz/60Hz

1492-JD3C 2.5 mm Double Level Terminal Block

1492-W3-BL IEC Term Blck 8x47.6x41mm Screw

软启动器 3RW40752BB45

工艺型 CPU 6ES7 517-3UP00-0AB0 CPU 1517TF-3 PN/DP，3 MB 程序，8 MB 数据；2 ns；集成 X1: 2x PN 接口，支持 IRT；X2: 1x PN 接口，支持 RT；X3: 1x DP 接口

156-B20CA1 20 A Contactor

1746-F5 SLC Power Supply Fuse

1786-RG6F ControlNet Coax 1000 Ft High Flex Cable

193-T1AB40 2.9-4.0 A IEC Bimetallic Overload Relay

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IC600CB501RR Basic Logic Control

IC647HSTCS15KM Historian Enterprise Corporate Server 15000 Points (M4 Key)

IC647TRT935 CIMPLICITY HMI Server 35,000 I/O Runtime System

IC693PWR322RR Power Supply, 24/48 Vdc, 30 Watts

IC756MDV010J-98 DV Draw Dvlpnt on Alpha OpenVMS, Japanese, Version 9.8

MicroLogix 1000/1761 System 9399-RL50GRPT RSLOGIX 500 GETTING RESULTS GUIDE (PORTUGUESE)

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Distributed I/O 1794-ACN15K CONFORMAL COATED, SINGLE MEDIA ADAPTER, CONTROLNET

Communications 9351-WKTS INTERCHANGE FOR WINDOWS

Operator Interface D6190-6.5.33 CONTROLVIEW DYNAMIC DATA EXCHANGE SERVER USER MNL.

Support 9358-BA10R SUPT REINSTATEMENT CONTRACT FOR 9358BA10ENE

Support 9392-CDRSRUE DATADISC ENGLISH/RUSSIAN BUNDLE

RSI Software Products 9324-RL0100ITE RSLOGIX 500 STARTER ITALIAN CD

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IC200CHS102 I/O INTERPOSING DISCONNECT STYLE, 16 PT EXPANSION

IC694MDL740 OUTPUT MODULE 12/24 VDC 0.5AMPS 16 POINTS POSITIVE LOGIC

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VSPCSE-ADMUP VisualSPC SE Admin Upgrade License from Standard (requires customer ha ve current SAFE).

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20G11LC1K1JN0NNNNN PowerFlex 755 AC Packaged Drive

22D-D4P0N104 PowerFlex 40P- 1.5 kW (2 HP) AC Drive

140EIA92100 Quantum AS-I MASTER模块, 1通道

290E-FBZ-G1 Direct Online Starter

LY4NJ 24VDC，110VAC，220VAC，4开4闭，触点10A LED灯

1492-SPM2C250 MCB Supplementary Protector 25 A

软启动器 3RW30282BB04

电机启动器 3VU16403MN00

150-F251FBD Encl. SMC Flex Smart Motor Controller

1732DS-IB8XOBV4 Guard I/O 16 Point Digital Comb Module

1771-P4S 1771 Power Supply

193-EECD E1 Plus 1-5 A IEC Overload Relay

199-LG1 Terminal Lugs

2090-CPWM7DF-08AA25 MP-Series 25m Standard Power Cable

2094-XNSHT-1 Kinetix 6000 Shunt Module Connector Set

EDS-308-MM-SC-T C1 D2 6-port 10/100, 2 port multi-mode SC fiber (-40 to 75 deg C op temp)

GFK-1291 Field Control Distributed I/O and Control System PROFIBUS Bus Interface Unit User's Manual

IC220ACC103 MOTOR STARTER POWER CONNECTOR

IC647BWI010 Batch Opt: WorkInstruction Small Server Pak (10 Units)

IC647PRTKIT005C Proficy Portal Enterprise Edition Starter Kit 5 User (M1 Key)

IC693CPU374CA Conformal Coated.CPU 374 Module (240K Bytes configurable user memory) The battery for the CPU is now included in the CPU backplane box, Embedded Ethrnet 10/ 100Mbs w/built-in switch. No serial ports.

IC756ADV001E-99 DV Development - AIX Op Sys Addt'l User, English, Version 9.9

MSI-EFF-UNL-43 Unltd Site Clients - Efficiency Mgmt-43

SLC/1746 System 1746-RT30 REPLACEMENT TERMINAL BLOCK - AIC LINK COUPLER

Distributed I/O 1738-OA2M12AC3 120 VAC 2 OUTPUT WITH 3 PIN M12 CONNECTORS

Communications 1788-EN2DN ETHERNET/IP TO DEVICENET LINKING DEVICE

Operator Interface 2711-NMCC MEMORY CARD RETAINER PV550, 600 KEY, 900, 1000

Support 9302-RT3R SUPT REINSTATEMENT CONTRACT FOR 9302RT3

Support 9324-RL5300ESR SUPT REINSTATEMENT CONTRACT FOR 9324RL5300ES

DeviceNet Products 2706-P42C INVIEWW MESSAGE DISPLAY. 1 OR 2 LINE

RSI Software Products 9301-2SE3353KOE RSVIEW32 RUNTIME 5K WITH RSLINX (KOREAN)

RSI Software Products 9326-AD5APENE APPLICATION MANAGEMENT ADD-ON 5 USER

Motion Control MPG-A010-091M22 MOTOR,SERVO,GEAR RATIO 91,35NM,65RPM,MULTI,230V

Silver Series 1770-KFCD15 24 VDC SERIAL/PARALLEL INTERFACE CARD

HE693PBM100-12 Profibus DP slave module for Series 90-30 (enhanced microprocessor).

IC660BLC001 Cable w/Connectors Belden 9182 15 In (Qty 3)

QPI3D200S2P/B QUICKPANEL COLOR 10.5" STN BLANK

ST-5212 STXi Serial Interface module RS-232C, 2 Channels

20BC1P3A0AYNANC0 PowerFlex 700 AC Drive 20B

20F1AGE077AN0NNNNN PowerFlex 753 AC Packaged Drive

22B-A2P3N114 PowerFlex 40- 0.4 kW (0.5 HP) AC Drive

140DDI35300C Quantum 开关量DC输入,32点,24VDC,4组隔离,CC

284D-FVD4P0B-10-CR-EMI DeviceNet Variable Frequency Drive

E3JM-10M4T 10m,分离式, 触点输出3A带ON/OFF延时?电源同上

1492-SJ8A-4 IEC Term Blck 4 pole Side Jumper

人机界面 6AV6542-0CA10-0AX0 OP270-6，覆膜按键，256 色，5.7 英寸，320? 240

6ES78331FC020YE5

1497B-A13-M14-0-N 2000VA 220x440-120V 60Hz CPT

1606-XLS240K AC or DC Input 28 to 32VDC Out 240W PS

1769-ECL CompactLogix Left End Cap

188-K4D630 Miniature Circuit Breaker 63 A

194R-FC04 Cable-Operated Accessory 4 Ft

2090-CPBM7DF-12AA12 MP-Series 12m Power and Brake Cable

2090-XXNPMP-16S07 MP-Series 7 m Length Power Cable

CBL-1C-ET-20 Encoder cable for MTR-1216 or MTR-1221 or MTR-1231 series stepping motors. 20 feet

GF-0196S-10/OBG Connecting FlashCable to Brown & Sharpe Digit Dial plus (Owens Brockwa y OEM),10 ft.

IC200TBX123 Tool box, 23 point (IC200UAL006) 24VDCIn/Relay Out, 2 Analog In/1 Anal og out, AC powered (requires AC power), VersaMax DataPanel DP45 with Programming software and cables, (IC640VPS002,IC752DDZ000, IC200CBL555, IC646MPM001)

IC646TBSPMPS1000 Smart Process Monitoring Process+ server 1000 loops

IC647NRX000 CIMPLICITY HMI System Sentry

IC693ACC320 Spare Parts Kit (Power Supply)

IC752BDT003RR Datapanel 240T with Advanced software, 240x128 LCD with CCFT backlight . 6x8 Matrix Resistive touch screen with text, bitmaps, bar graphs, r eal time clock. With Real Time Trends & Host Communications.

IC800VMCI010 VersaMotion amplifier flying lead IO interface cable- 1 meter

SLC/1746 System 1746-OV32 DC OUTPUT MODULE FOR PROGRAMMABLE CONTROLLER

Industrial Computers 6189V-25HDD 2.5" HARD DISK DRIVE STANDARD

Application-specific products 6556-SPV550 PV550 KIT FOR PRESS SCBK2 KIT

Operator Interface 2711-B6C1L1 PV600 COLOR KEY&TOUCH, RIO & RS232 PRINT

Support 9301-2SE2300ZHS SUPT RENEWAL CONTRACT FOR 93012SE2300ZH

Support 9307-EM64MGRR SUPT REINSTATEMENT CONTRACT FOR 9307EM64MGRENE

DeviceNet Products 1734D-IB8XOB8E 24 VDC 8 SINK IN 8 SOURCE OUT, DNET COMMS, SCREW

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RSI Software Products 9358-BNT60ENE RSBATCH 60 UNITS

Motion Control MPL-B320P-SK24AA MOTOR,SERVO,2.94 NM,5000RPM,SINGL,460V,BRK

Motion Control 2090-U3BB-D44 BREAKOUT BOARD CN1, ULTRA 3000

GFK-0600 Series 90-70 Programmable Controller Data Sheets Manual

IC641VPS999 VersaPro Standard Edition Unlimited Seat Site License - Windows Programming Software for Series 90-30 and VersaMax PLCs

MSCPU-212806NT Marathon Std CPU - 333 MHz AMD CPU, 128M, 6G, WinNT, no expansion slots

PSPC-DC5/EL Prof Shop Floor SPC DC 5 User w/ eSig

20BC015A0AYNANC1 PowerFlex 700 AC Drive 20B

20F11FC022JA0NNNNN PowerFlex 753 AC Packaged Drive

2198-KITCON-CAPMOD2240 Kinetix 5700 Connector Kit Cap Module

2711P-RBB12 PanelView Plus Accessory

280-PWRM35H-M25 ArmorConnect 3-PH Power Media trnk cable

CQM1-ID211 输入 8点. 12 – 24V DC

1492-N23 TERM BLCK A-B Rail End Anchor

通讯处理器CP 6GK7 343-1GX21-0XE0 "CP343-1 IT ， 工 业 以 太 网 通 讯 处 理 器10/100Mbit/s,RJ45 接口，15 针 D 型接口，IT 功能"

行程开关 3SE53222SF22

TIA 博途 WinCC 选件 6AV2107-0KR00-0BB0 SIMATIC WinCC WebDiagnostics Server for Runtime Professional

1585J-M8HBJM-3 RJ45 Ethernet Media

1760-IA12XOW6I Pico AC Expansion Input/Output Module

188-K2B250 Miniature Circuit Breaker 25 A

194E-Y80M-1753-6G 80 A 194E Load switch

2090-CHBP8S8-12AA03 Kinetix 6000M IDM Hybrid Cable

2090-UXPC-D0915 MP-Series 15 m Length Interface Cable

BC647MOP001 Logic Developer PC with View for 8000 I/0 Development only with Proficy GlobalCare Complete with USB Hardware key

GC647IFPRSR00075 GCC iFIX Profsnl SCADA 75 I/O Srv

IC200CHS015 I/O interposing spring style

IC646MRA700 View Runtime 700 I/O

IC647IFSTDVUNLMTC iFIX Standard HMI Unlimited Development (M1Component Part)

IC670CBL003 Cable for Connector Style I/O Base (IC670CHS003), 2 Meter, 18 AWG, Con nector on One End

IC697CPX935RR CPU, 96MHz, 12K discrete I/O, 1M byte fixed user memory

IC800SKCEZ100 Encoder cable to connect an S2K to any 30 Watt to 750 Watt S-series servo motor. 10 meters

ControlLogix/1756 System 1756-OF4 ANALOG OUTPUT - CURRENT/VOLTAGE 4 PTS (20 PIN)

Industrial Computers 6182H-10TRH4B VVCE 1000, TOUCH STD, MEM, ENET, AC

Process Control 1757-FIMUPG020 FIELDBUS LICENSE UPGRADE, 20 FIMS

Operator Interface 2711P-RGK4 PROTECTIVE ANTIGLARE OVERLAY, QTY 3

Support 9355-WABITS SUPT RENEWAL CONTRACT FOR 9355WABIT

Support 9354-OD100R 9354-OD100 SOFTWARE SUPPORT CONTRACT REINSTATEMENT

ControlNet Products 1784-PCICS CONTROLNET PCI BUS SCANNER & MESSAGING CARD WITH

RSI Software Products 9301-2SE2400KOU1 RSVIEW32 WORKS 1500-32K UPGRADE IN-SUPT (KO)

RSI Software Products 9355-WABSNEU1R UPGR: OUT-SUPT: RSLINX SINGLE NODE TO RSLINX OEM