SNAT7261PCP
内存器件种类越多,数量越多,越便于PLC进行种种逻辑量及模拟控制。它也是代表 PLC性能的重要指标。
PLC内部器件有:SNAT7261PCP
I/O继电器,或称映射区。它与PLC所能控制的I/O点数及模拟量的路数直接相关。 SNAT7261PCP
内部继电器数,有的称为标志位数,代表着PLC的内部继电器数。它与I/O继电器区相联系着,有时与后者相联系进行处理。内部继电器多,便于PLC建立复杂的时序关系,以实现多种多样的控制要求。一般讲,内部继电器数比I/O继电器要多得多。SNAT7261PCP
有的内部继电器还可丢电保持,即它的状态(ON或OFF)、PLC丢电后,靠内部电池仍予以保持。再上电后可继续丢电前的状态。保持继电器可增强PLC控制能力,特别对记录故障,故障排除后恢复运行,更显得有用。SNAT7261PCP
定时器,可进行定时控制。定时值可任意设定。定时器有多少,设定范围有多大,设定值的分辨率又是多少,这些都代表定时器件的性能。
计数器,可进行计数,到达某设定计数值可发送相应信号。可进行什么样的计数,计数范围多大,怎么设定,有多少计数器,则是PLC计数器性能的代表指标。
Name: Shanxi Runsheng Import & Export Co., Ltd.
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Main business: Bentley Bentley, Invensys TRICONEX, Woodward Woodward
, Foxboro, FOXBORO, Westinghouse, Ryan, Schneider
, Modicon, ABB, AB, Motorola, GE Fanuc, Yaskawa YASKAWA, Bosch Rexroth REXROIH, ACSO, YOKOGAWA Yokogawa, Dark Horse HIMA, Emerson EMERSON
, Yokogawa YOKOGAWA, Honeywell Honeywell, Moore Moore, EPRO, ICS TRIPLEX, Bachmann and other major brands === Mainly do PLC, DCS, robot, servo and four major systems of discontinued spare parts, modules, cards, and drives.