厂采用集散型测控管理系统,设一个中心控制室主站和四个分现场(见图1)。各PLC站之间通过Co*olNet网络通讯,中控室四台PC机和服务器通过以太网通讯。现场测控由PLC完成,数据监控及分析由工作站计算机承担。各分站运行。通过网络分享信息资源;中控室可监控各分站的运行,实行优化调度。主控制网Co*olNet冗余网下挂4台型号为1756-L55M13的PLC,分别控制冷端、热端、进料端和出料端四个分站。根据各分站的不同情况,各PLC还通过DeviceNet[2]挂接若干个FLEX I/O和变频器等;冷端和热端的PLC还通过D带了一定数量的型号1747-K524的SLC,用于监控燃烧炉、压缩机等比较和分散的设备。这三层网络结构是卷业比较常用的网络结构层信息层采用以太网,用于全厂的数据采集、历史数据查询和程序的维护;第二层自动化控制层采用Co*olNet网络,用于实时I/O控制、报文传送。第三层设备层,用于底层设备的低成本信息集成。
1772-LA PROC CHASSIS
1772-LG PROCESSOR COOL MODULE FOR 1772-LP3
1772-LH PROCESSOR INTERFACE MODULE FOR 1772-LP2-LP3
1772-LI PROCESSOR MODULE FOR 1772-LP2
1772-LN3 MINI PLC2 ENHANCED MODULE 1024 WORD, RAM MEMORY
W/BLOCK TRANSFER, MULTIPLY, AND DIVIDE,
1772-LLC-2/20 PROCESSOR (PURCHASE MEMORY SEPERATELY)
1772-LP3 PLC-2/30 PROCESSOR (PURCHASE MEMORY SEPERATELY)
1772-LS 2/05 MINI PLC PROCESSOR W/POWER SUPPLY
1772-LSP 2/05 MINI PLC PROCESSOR W/POWER SUPPLY
1772-LV B CPU
1772-LW MINI PLC-2/17 PROCESSOR W/O PWR SUPPLY
1772-LWD PLC 2/17 W/O PS
1772-LWP MINI PLC 2/17 PROCESSOR W/POWER SUPPLY
1772-LX MINI PLC 2/16 PROCESSOR W/O PWR SUPPLY, 4K MEMORY
1772-LXP MINI PLC 2/16 4K W/PWR SUP
1772-LZ MINI PLC-2/02, PROCESSOR W/O PWR SUPPLY
1772-LZP MINI PLC 2/02, W/PWR SUPPLY
1772-ME16 PLC-2 16K RAM
1772-ME8 PLC-2 RAM MEMORY, 8K FIXED
1772-MJ 4K EEPROM FOR MINI PLC-2/02,02,16
1772-MS PLC 2 MEMORY SEGMENT 2K RAM
1772-MR PLC-2 MEMORY SEGMENT
1772-P1 PLC SYSTEM POWER SUPPLY MODULE, 115V AC INPUT
1772-P4 PLC-2 24V DC POWER SUPPLY MODULE,
1772-PLC2 PLC 2
1772-SD2 REMOTE I/O SCANNER
1772-TC PROGRAM PANEL INTERCONNECT CABLE,10'
1772-TH DIGITAL CASSETTE RECORDER CABLE, 8'/2.44M
1772-IS PLINPUT SIMULATOR
1772-L1A PLPROGRAMMABLE COOLLE0V AC
1772-L1B PROGRAM PANEL INTERCONNECT
1773-IA PLC-PROXIMITY SWITCH ADAPTER
1773-IB PLC-PROXIMITY SWITCH ADAPTER
1773-IC PLC-PROXIMITY SWITCH ADAPTER
1773-L1AF PLPROGRAMMABLE COOLLE0V AC
1773-L1C PLPROGRAMMABLE COOLLE0V AC