MVME162-212 MOTOROLA 网络硬件设备

MOTOROLA MVME162 -220
MOTOROLA MVME162- -512A
MOTOROLA MYME162- 522h
MOTOROLA MYME162- 522A 01 -W3960B/61C
MOTOROLA MVME162PA
MOTOROLA MYME162PA-344
MOTOROLA MVME167-33B
MOTOROLA MVME172- -263/260
MOTOROLA MVME2301 -900
MOTOROLA MVMB2604 712I/0
MOTOROLA MVME300
MOTOROLA MVME5100
MOTOROLA MVME5500
MOT0R0LA MVME712M

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Description

PPI协议是专门为S7-200开发的通信协议。S7-200 CPU的通信口(Port0、Port1)支持PPI通信协议,S7-200的一些通信模块也支持PPI协议。Micro/WIN与CPU进行编程通信也通过PPI协议。S7-200 CPU的PPI网络通信是建立在RS-485网络的硬件基础上,因此其连接属性和需要的网络硬件设备是与其他RS-485网络一致的。S7-200 CPU之间的PPI网络通信只需要两条简单的指令,它们是网络读(NetR)和网络写(NetW)指令。

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