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.