MVI56-ADMNET

PROSOFT MVI56-ADMNET 

联系人:卢军

电  话：18506919598

Q    Q：312782195

传  真：0592-6514751

地  址: 厦门市思明区槟榔西里197号第四层B19单元

用ModScan32软件通过USB转485直接连接仪表，可以看到40001-40012内的数据，与仪表上的数据相符，但是我将程序写入到PLC之后通过编程电缆（编程电缆解port0口，port1口通过通讯电缆接仪表），监控时倒程序没出现错误，就是数据一直都是0，监控过了几分钟后在MBUS_MSG里面自动出现了一个3号错误（从站未响应）请问这是什么情况呀？注：外围接线没问题，程序的参数和仪表的参数（波特率，数据位，校验位，停止位，站号）都保持了一致。是不是软件上哪个地方没有设置好呀，现在只求先把数据都读出来，监控时和仪表显示的一样

图片说明： 1，程序截图

答案

用一台PC通过USB转485将PLC与仪表通讯数据流ModScan32软件采集检测即可分析出故障原因

现在DP网上挂着一个157，DPLINK（157-0AA81）+DP/PA COUPLER（157-0AC80），PA网上带着几个3785阀。请问一下，能否用FDC 157-0（157-0AC83）替代呢？我看了一下（下载中心）官网下的说明书，说可以用FDC 157-0单机使用，不需要IM153-2，当做也可以加上IM153-2使用。在单独组态FDC 157-0时，不知道如何出现PA网，当然也不能加上3785PA阀了，请问这是什么原因呢

答案

1、不通过 DP/PA link 连接至 DP/PA 耦合器。
在 ROFIBUS DP 上，波特率必须设置为 45.45 kbit/s。
组态 DP/PA 耦合器时并不需要 GSD 文件 (DP/PA 耦合器在总线上透明工作)。
PA 从站只是简单地被映射为一个 DP 从站。
PA 从站的诊断要按照 PROFIBUS DP 的机制进行，即，可以通过 SFC 13 或 SFC 51 访问每个分离的 PA 从站。

打开PLC看了看 一共五个电路板 不包括底部的CPU电路板 我看了看 发现只有Zui后一个也就是第五个烧坏了两个元件 这两个还紧挨着 其他的几个电路板都没发现烧了的痕迹  可是我再通24的电源 PLC没反应   电源接头旁边有个元件omf 125 4A 这个是不是保险丝？？？我用万用表测量了一下 发现它不通  是不是里面的保险断了啊？？？请问我能不能换一个啊？？？而且烧坏了一个电路板 另外几个还能不能用啊 要是修能行吗？  希望得到指导 

问题补充：
PLC里面有一个板子烧坏了 其他的板子还能用吗？？

答案

可以外接个保险丝救活pLc的，焊两根线出来接保险丝。

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