中央处理单元(CPU)是PLC控制器的控制中枢。它按照PLC控制器系统程序赋予的功能接收并存储从编程器键入的用户程序和数据;检查电源、存储器、I/O以及警戒定时器的状态,并能诊断用户程序中的语法错误。当PLC控制器投入运行时,首先它以扫描的方式接收现场各输入装置的状态和数据,并分别存入I/O映象区,然后从用户程序存储器中逐条读取用户程序,经过命令解释后按指令的规定执行逻辑或算数运算的结果送入I/O映象区或数据寄存器内。等所有的用户程序执行完毕之后,最后将I/O映象区的各输出状态或输出寄存器内的数据传送到相应的输出装置,如此循环运行,直到停止运行。
2840A21G04 4QAO38 QAO G04 Analog Output card - 5VDC 2
2840A21G04 8QAO4 QAO G04 Analog Output card - 5VDC 1
2840A21G05 5QAO61 QAO G05 Analog Output card - (+/-)5VDC 2
2840A21G05 7QAO24 QAO G05 Analog Output card - (+/-)5VDC 6
2840A21G05 7QAO32 QAO G05 Analog Output card - (+/-)5VDC 2
2840A21G05 8QAO5 QAO G05 Analog Output card - (+/-)5VDC 1
2840A21G05 13QAO13 QAO G05 Analog Output card - (+/-)5VDC 1
2840A21G06 8QAO22 QAO G06 Analog Output card - (+/-)10VDC 2
2840A21G07 5QAO37 QAO G07 Analog Output card - 20mA 1
2840A21G08 QAO QAO G06 Analog Output card - (+/-)10VDC 0
2840A38G01 Backplane Q-Crate Backplane 42
2840A49G01
404A724G01 1QEX6 QEX Q-Line Extender 1
2840A75G01 3QSC7 QSC G01 Speed Channel card 4
230VAC 14
320117-05A Card Kalex SC401141-45 1
399D915G05 Gnd Det Pnl gray rack panel 1
3A42902H01 Printer Genicom 3410XCQ Color Printer 1
3A43019G02 Panel 13VDC Power Supply Monitoring Panel w/ Cable 1
3A43084G01 SBUS SBUS/MultiBUS 0
3A56324G11 Chassis OPR MMI 1
3A58354G02 TFR Assy
TFR Modification Assy (same as TFR Assy 4D33764G01 but w/
sticker on front) 1
3A58919G12 Cable Orange Cable Assy RTD - N 12
3A58939G15 Keyboard SUN Type 6 Keyboard and Mouse 5
3A58945H01 Monitor 20/19" SUN CRT (19.1" LCD replacement solution) 5
3A58992H04 Cable 3BNC RGB Video Cable for SUN Sparc5 10
3A59104G01 VXI Kit VXI Kit 1
3A59104G02 Card Cage
486 WEStation Q-line Remote I/O (on front of cage w/ MRC,
MHC, MDX cards) 11
3A59104G04 Card Cage
486 WEStation Q-line Remote I/O (on front of cage w/ MRC,
MHC, MDX cards) 6
3A59323G01 Chassis ENGR MMI Chassis 5
3A59323G02 Chassis ENG MMI Chassis 1