RS232/422/485 欢迎询价

易卖工控网（www.ymgk.com）提供”RS232/422/485 欢迎询价”，产品详情：品牌/厂家：DCSPLC、型号：RS232/422/485、成色：全新、货期：现货 1天内发货、保修：180天，更多产品详情就上易卖工控网。

PLC之间的通讯网络是各厂家专用的，PLC与计算机之间的通讯，一些生产厂家采用工业标准总线，并向标准通讯协议靠拢，这将使不同机型的PLC之间、PLC与计算机之间可以方便地进行通讯与联网。

　　了解了PLC的基本结构，我们在购买程控器时就有了一个基本配置的概念，做到既经济又合理，尽可能发挥PLC所提供的佳功能。

　　基本指令系统特点

PLC的编程语言与一般计算机语言相比，具有明显的特点，它既不同于语言，也不同与一般的汇编语言，它既要满足易于编写，又要满足易于调试的要求。目前，还没有一种对各厂家产品都能兼容的编程语言。如三菱公司的产品有它自己的编程语言，OMRON公司的产品也有它自己的语言。但不管什么型号的PLC，其编程语言都具有以下特点：


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