- 型号:84661-8
- 数量:3
- 制造商: 厦门雄霸电子商务有限公司
- 有效期:2020/10/8 0:00:00
BENTLY NEVADA 84661-8
BENTLY NEVADA 84661-8
BENTLY NEVADA 84661-8
1.FX系列编程器
编程器是PLC的一个重要外围设备,用它将用户程序写入PLC用户程序存储器。它一方面对PLC进行编程,另一方面又能对PLC的作业状况进行监控。随着PLC技能的开展,编程言语的多样化,编程器的功用也不断增加。
(1)简易编程器 FX型PLC的简易编程器也较多,最常用的是FX-10P-E和FX-20P-E手持型简易编程器。他们具有体积小、重量轻、价格便宜、功用强的特色。有在线编程和离线编程两种方式。显现选用液晶显现屏,别离显现2行和4行字符,配有ROM写入器接口、存储器卡盒接口。编程器可用指令表的形式读出、写入、插入和删去指令,进行用户程序的输入和修改。可监督位编程元件的ON/OFF状况和字编程元件中的数据。如计数器、定时器的当前值及设定值、内部数据寄存器的值以及PLC内部的其他信息。有关编程器的运用详见第八章。
(2)PC机+编程开发软件 FX系列还有一些编程开发软件,如GX开发器。它能够用于生成包括所有三菱PLC设备软件包,运用该软件能够为FX、A等系列PLC生成程序。他在Windows操作平台上运转,便于操作和保护,能够用梯形图,句子表等进行编程,程序兼容性强。FX-PCS/WIN-E-C编程软件包也是一个专门用来开发FX系列PLC程序的软件包。可用梯形图、指令表和次序功用图来写入和修改程序,并能进行各种编程方式的交换。它运用于Windows操作系统,这对于调试操作和保护操作来说能够提高作业效率,并具有较强的兼容性。
2.其他外部设备
在一个PLC控制系统中,人机界面也非常重要。还有一些辅佐设备,如:打印机、EPROM写入器外存模块等。
FX系列PLC有根本逻辑指令20或27条、步进指令2条、功能指令100多条(不同系列有所不同)。本节以FX2N为例,介绍其根本逻辑指令和步进指令及其使用。
FX2N的共有27条根本逻辑指令,其间包含了有些子系列PLC的20条根本逻辑指令。
取指令与输出指令(LD/LDI/LDP/LDF/OUT)
(1)LD(取指令) 一个常开触点与左母线衔接的指令,每一个以常开触点开端的逻辑行都用此指令。
(2)LDI(取反指令) 一个常闭触点与左母线衔接指令,每一个以常闭触点开端的逻辑行都用此指令。
(3)LDP(取上升沿指令) 与左母线衔接的常开触点的上升沿检测指令,仅在指定位元件的上升沿(由OFF→ON)时接通一个扫描周期。
(4)LDF(取下降沿指令) 与左母线衔接的常闭触点的下降沿检测指令。
(5)OUT(输出指令) 对线圈进行驱动的指令,也称为输出指令。
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