描述

其次是精度高。TMS320C6713有三個(gè)因素影響著浮點(diǎn)格式的內(nèi)在高精度。首先，浮點(diǎn)DSP的24位I／O字長(zhǎng)在整數(shù)與實(shí)數(shù)值方面可實(shí)現(xiàn)比定點(diǎn)器件中常用的16位字長(zhǎng)更高的精確度。第二，取冪大幅提高了應(yīng)用可用的動(dòng)態(tài)范圍，較大的動(dòng)態(tài)范圍對(duì)處理極大數(shù)據(jù)集以及難以方便預(yù)計(jì)數(shù)據(jù)集范圍的情況相當(dāng)重要。第三，硬件內(nèi)部的浮點(diǎn)數(shù)據(jù)表示法比定點(diǎn)器件更為精確，這就保證了最終結(jié)果的更高精確度。

SST39VF400A是SST公司推出的FLASH存儲(chǔ)器。該器件十分適合用作外擴(kuò)存儲(chǔ)器，它的存儲(chǔ)容量為4MB，采用3．3V單電源供電，因而無(wú)需額外提供高電壓即可通過(guò)一些特殊的命令字序列來(lái)實(shí)現(xiàn)對(duì)各個(gè)子模塊的讀寫和擦除，并可重復(fù)十萬(wàn)次以上，此外，還可通過(guò)I)SP編程來(lái)實(shí)現(xiàn)對(duì)它的讀寫操作，十分適合于系統(tǒng)的調(diào)試和開(kāi)發(fā)。

1．2系統(tǒng)硬件接口設(shè)計(jì)

DSP訪問(wèn)片外存儲(chǔ)器主要通過(guò)外部存儲(chǔ)器接口(EMIF)完成。它不儀具有很強(qiáng)的接口能力(可以和各種存儲(chǔ)器直接接口)，而且具有很高的數(shù)據(jù)吞吐能力(高達(dá)l200MB／s)。TMS320C6713的EMIF能支持8位、16位和32位寬的所有存儲(chǔ)器，當(dāng)從這些窄位寬的存儲(chǔ)空間讀寫數(shù)據(jù)時(shí)，EMIF會(huì)將多個(gè)數(shù)據(jù)打包成一個(gè)32位的值，而不必增加額外電路。TMS320C6713與SST39VF400的接口電路設(shè)計(jì)如圖1所示。該電路主要通過(guò)DSP的相關(guān)輸出管腳來(lái)控制FLASH的擦除和讀寫。其中。A0～A19為地址線，DQ0～DQ15為數(shù)據(jù)線OE和WE分別為輸出使能和寫使能，CE1為片使能。由于TMS320C6713默認(rèn)的引導(dǎo)模式是從外部CEl空間的16位FLASH來(lái)引導(dǎo)裝載，所以，TMS320C6713的CEl和FLASH的片選CE相連。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應(yīng)用于以下領(lǐng)域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列

本特利，英維思，伍德沃德，福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè)，ACSO，力士樂(lè)等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

CONVUM VACUUM GENERATOR,TYPE CV-20LSCK

Convum MPS-V2R-G Vacuum Sensor

PARKER/CONVUM VACUUM AIR GENERATOR CV-30AHSN

Lot/4 Convum PS-50-F Vacuum Suction Pads

1 NIB CONVUM MPS-V3RC-GHA VACUUM SENSOR MPSV3RCGHA

PARKER CONVUM VACUUM SOLENOID VALVE MC2S10HSZM24B5N

Convum Vacuum Solenoid CVA-15HS

CKD CONVUM 3/8″PORT VACUUM FILTERS VF-6

CKD CONVUM 1/4″PORT VACUUM FILTERS VF-5

Convum PF-50 Vacuum Suction Pad

CONVUM VF-5 VACCUM GENERATOR FILTER CV-15,MCA-10/13

CONVUM FILTER VF-5 MYOTOHU COMPRESSOR FILTER 1/4 NPT

Parker Convum TYS-20B-30 Bulkhead Level Compensator

Myotohu Convum CVA-15QS Vacuum Actuator

CONVUM CVK-15HRZD PRESSURE SOLENOID VALVE CONVUM

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CONVUM CVA-15HS35GDN NSFP CVA15HS35GDN

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CONVUM CV-15HS NSFP CV15HS

Convum Pneumatic Valve Manifold CVK-15HRZD Lot of 2

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DNS CONVUM SENSOR,DIGITAL 2-AE-J0043 D4M5-GHA-D4

CONVUM CV-10HSCK NSFP CV10HSCK

CONVUM VF-3 VACUUM FILTER 1/8″

Convum APS030-PNP-SA2 Vacuum Sensor

CONVUM VACUUM FILTERS VF-6

CONVUM CV-10LS USPP CV10LS

Convum Manifold Solenoid Valve CVK-15HRZD 24V MVS SMC

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PARKER CONVUM PF-120D VACUUM CUP PAD

PARKER CV15HSN CONVUM VALVE CV-15HSN 1/4 INCH 1/4″

Convum Myotoku CVK-15HRZD 24BD Pneumatic Solenoid(794)

CONVUM PRESSURE DISPLAY SWITCH MPS-71E-G-D5

Convum Parker PFYK-25-U Vacuum Suction Cups

MYOTOKY LDT.CVA-15HSA CONVUM VALVE

Parker Convum CEK27HSZC24PBLN Vacuum Pump Generator

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Convum Vacuum Generator Pump CCV10HSCK NEW

2 Convum Parker PFYK-25-SI Vacuum Suction Cups

PARKER generator CONVUM VACUUM PUMP PA244-RV3.5

MYOTOKU/CONVUM CV-10LS GENERATOR 10MM LOW VACUUM

MYOTOKU/CONVUM CV-10LS GENERATOR 10MM LOW VACUUM

CONVUM MVS-030-W NSFP MVS030W

CONVUM SENSOR,VACUUM FOR SPIN SD MPS-R3S5-GHA-D

DNS CONVUM?SENSOR,PRESSURE 2-AE-J0076 P3M5-GHA-D

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DNS CONVUM SENSOR,DIGITAL SPI 2-AE-J0012 R3S5-GHA-D

Myotohu Convum MVS-030 Vacuum Switch

MYOTOKU/CONVUM CVF-1-10LS GENERATOR 1MM

CONVUM MPS-V2R-C NSFP MPSV2RC

CONVUM MPS-P1N-PC NSFP MPSP1NPC

DNS CONVUM PRESSURE SENSOR ASSY 2-AE-J0067 R3S5-GHA-D

CONVUM CYLINDER TKY-0-4.5X3

Convum Vacuum Switch CVA-D,CVA-10,CVA-V3B

Myotoky LTD.Model:CVA-10HR-VDN-24?B Convum Valve

4-Convum Vacuum Technology Valves CVK-15HSZC 24 VDC

MYOTOKU/CONVUM CVF-1-10HRAB/MV?S-030-AB VAC SENSOR

MYOTOKU CONVUM CVR Vacuum Switch

CONVUM CVF-2-05HS VACUUM SWITCH SOLENOID VALVE

CONVUM MPS-V2R-PGA NSPP MPSV2RPGA

Parker MPS Convum PRESSURE Switch P6N-PG(11)

Parker Convum CVX-0260-B-E0S-?DN PA244-RV3.5 Vacuum Pump

MYOTOKU/CONVUM VF-3 VACUUM FILTER

CONVUM MPS-V3RC-G-M VACUUM PRESSURE SENSOR

Parker Convum Vacuum LED Switch MPS-V2N-PC

Parker Convum CVX0260BE0SDNNA Vacume Pump PA244-RV3.5

Parker Convum MPS-R3F5-NC Stainless Pressure Sensor New

Convum CVA-DN/CVA-15HS 24BL/C-0054-CVA

Myotoku Convum F-1 Vacuum Ejector C-21-316

Convum VF-3

Convum CVA-15HR-B Vacuum Release Solenoid Valve NNB

CONVUM A QUICK RELEASE VALVE CVA-D NO.EKT(15-19)

Convum MPS-V9M-NG-YOK Sensor

Convum MC2S07HS-ZM24B5?R-8Y19 Valve w/A00SC23-Z06-028

Convum MVS-030-AB Vacuum Sensor NPN MVS030AB NIB

Parker Convum MVS-030ABP PNP Sensor MVS030ABP NIB

Convum VF-6 Pneumatic Port Vacuum Filter NIB

Convum VF-3 vacuum filter assembly 1/8″w/element