集成需求:对于单机装置,PLC系统是理想选择。当工厂配置多个PLC系统时,就会产生相互连接的要求。这一般很难实现,因为通常需要利用通信协议对数据进行映射。集成当然没有问题,但当有变更需求时,那用户的麻烦就来了:一旦某个PLC系统做了变更,就可能会导致两个PLC不能正常通讯,这是因为数据映射受到影响的缘故。对DCS系统而言,则根本不需要映射,配置变更只是一个简单的过程;控制器是系统自带的。
高可用性:对可用性要求较高的过程,DCS系统可以提供冗余配置。
(T4) 2 BUSSMANN LPS-RK-150SP FUSE. T4.
(D4) 1 ALLEN BRADLEY MSR230P SER A SAFETY RELAY D4
(D4) 1 ALLEN BRADLEY MSR230P SER B SAFETY RELAY D4
(R2-4) 1 FESTO CPV14-M1H-2X3-OLS SOLENOID VALVE R2-
(G1-1) BANNER 25618 MINI-BEAM RETRO RANGE: 5 M INPU
(4469) Bodine Inverter Ballast Emergency Light A115-230
(D4) 1 NIB TELEMECANIQUE LA1LB0211 AUXILIARY CONTACT D4
(D5) 1 NIB MAGNECRAFT TDRSOXB-24 TIME-DELAY RELAY D5
(D5) 1 NIB TELEMECANIQUE XUK9ARCTL2 PHOTOELECTRIC SENSO
(G1-3) 1 OMEGA PRS-3-100-A-S-0300-D1-M12 TEMPERATUR
(G1-4) 1 ALLEN BRADLEY 800MS-H33B SERIES A OPERATOR
(6030) Namco Limit Switch EA080-12100 Snap-Lock (6030)
(G1-5) 1 MODICON AS-8535-000 HIGH DENSITY/LOW DENSI
(3987) Burling Temperature Control 942352 35-600 deg.
(D5) 1 LSP INDUSTRIES P-010 MICROSPRAY REPLACEMENT
(Q9-2) 1 BANNER BA23S DIFFUSE MODE FIBER OPTIC Q9-2
(E4) 1 NIB NORGREN MH01GDA34ALJD AIR CONTROL VALVE E4
(3067) Parker Solenoid Valve Skinner 7221GBN4VN00 (3067
(U2-4) 1 ALLEN BRADLEY 505-BOD SER C SIZE 1 STARTE