1747-C13
1747-C13
1. DCS是一种“分散式控制系统”,而PLC只是一种(可编程控制器)控制“装置”,两者是“系统”与“装置”的区别。系统可以实现任何装置的功能与协调,PLC装置只实现本单元所具备的功能.
2. 在网络方面,DCS网络是整个系统的中枢神经,和利时公司的MACS系统中的系统网采用的是双冗余的100Mbps的工业以太网,采用的国际标准协议TCP/IP。它是安全可靠双冗余的高速通讯网络,系统的拓展性与开放性更好.而PLC因为基本上都为个体工作,其在与别的PLC或上位机进行通讯时,所采用的网络形式基本都是单网结构,网络协议也经常与国际标准不符。在网络安全上,PLC没有很好的保护措施。我们采用电源,CPU,网络双冗余.
现货,现货,降降降,火火火,火火火……
现货,现货,降降降,火火火,火火火……
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MC TECHNOLOGIES/AUTOTECH B60-04050-E0001 DIGIBRAKE
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FAG 23028ESK ROLLER BEARING
RELIANCE 45C230 AUTOMATE 15E CONTROLLER
SCHLAFHORST 117-660-008/117-690 104 D/117-693 043 D PC BOARD (7 CONNECTORS)*XLNT
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SEW-EURODRIVE DFT80K4/FAF40DT80K4 MOTOR W/SNUGGLER
LINX 0631-226-00 REV B PC BOARD
GE/MULTILIN MMII-PD-1-2-MOD601 MOTOR MANAGER II
GE 37F0523417 CAPACITOR 200KVAR 4160V**
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AUTOMATED ConVEYOR 151324 180-1/2"X36" POWER ROLLER LIFT GATE CONVEYOR
OMRON/AEC E5AX-VSS-AEC-320 TEMPERATURE CONTROLLER
HEINEN 61290-1.0-000 PC BOARD
RELIANCE 0-57410/057410/O-57410/57C410 ANALOG OUTPUT MODULE 35A
SORENSEN DCS 8-125 POWER SUPPLY
BANNER 68964/MSXLHDR2412Y MINI-SCREEN HD LIGHT CURTAIN RECEIVER
SIEMENS HED43B020L BREAKER
NORTEL NTNX26BA 44/NTNX38AA 90 TOP HEAD CONTROLLER
E STEM ELECTROTHERMAL LAB STIRRING AND HEATING MODULE
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FADAL PARTS 8LSN54.E3030D000-0 SYNCHRonOUS MOTOR
RELIANCE 3RA2004 HR2000/BLA-16 AC SERVO 180VAC 16A*XLNT
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WEG 25955024 FAN MOTOR W21 SEVERE DUTY frame 145T 2HP 1.5KW 1755RPM
SQUARE D HDA36125 HD 150 CIRCUIT BREAKER 125A
HK SYSTEMS 0063915-001 PC BOARD
SIEMENS 6ES5-150-3SB61/6ES5150-3SB61 SIMATIC S5 PLC RACK CHASSIS
WOODS XFC4002-0C/XFC4002-OC ETRAC 2HP 460V AC DRIVE
SQUARE D 8803-P00VO4G 7.5HP 460V OMEGAPAK AC DRIVE VARIABLE TORQUE
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