1756-OC8

1756-OC8

1756-OC8

1756-OC8

DeviceNet网络或者1756-DNB是一种开放性底层网络，支持在简单工业设备(如传感器和执行器)和高级设备(如PLC控制器和计算机)之间建立通讯连接。DeviceNet网络利用经过验证的通用工业协议(Common Industrial Protocol即CIP)为工业设备提供控制、配置、数据采集功能。DeviceNet网络或者1756-DNB是一种灵活的网络，支持众多厂商开发的设备。
  1756-DNB或者1756-DNB是ControlLogix设备网(DeviceNet)扫描器模块。

为了保证程序及重要参数的安全，一般小型PLC设有外接EEPROM卡盒接口，通过该

接口可以将卡盒的内容写入PLC，也可将PLC内的程序及重要参数传到外接EEPROM卡

盒内作为备份。程序存储卡EEPROM有6ES 7291-8GC00-0XA0和6ES 7291-8GD00-0XA0

两种，程序容量分别为8K和16K程序步。

5．写入器

写入器的功能是实现PLC和EPROM之间的程序传送，是将PLC中RAM区的程序通过写入

器固化到程序存储卡中，或将PLC中程序存储卡中的程序通过写入器传送到RAM区。

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