描述
我做DCS维护已经有些年了,这些年新上的DCS的工作站几乎清一色的全部采用了DELL的机器。记得九几年的时候,DCS的上位机全部采用工控机,工作稳定,直到现在还在工作。现在不管那个厂商,不管是进口的还是国产的全部换用DELL的机器。DELL是做商用机,民用机和服务器的,虽然做工不错,而且都经过测试,但个人认为不能和工控机相比。现在DCS采用的机器基本上都是商用机,它的设计十分紧凑,机箱内的空间十分狭窄。其次DELL的机器在机器的进风口都没有过滤设置(而且有的连机箱风扇都没有,由此看出不是为工业应用所设计),如果现场粉尘大,对电脑的危害十分严重,工控机都有机箱风箱,而且都有过滤网。第三,DELL机器的配置设计都以够用为标准,几乎没有扩展性。如我公司现用的DELL机器,电源仅为145W,而且没有多余的电源插头,也没有扩展如硬盘,光驱的空间,就连联接IDE设备的IDE数据线都是只能接一个设备,且刚好够长(由此可见DELL的精打细算,和工控机的不惜成本形成鲜明对比)!如果想外接一个硬盘进行数据备份只有下掉光驱或使用USB移动硬盘。DCS工作站一般安装NT 2000 XP操作系统,而这些系统都不支持MS-DOS(不可能会给你装双系统),用GHOST进行硬盘整个备份要用光盘引导系统,又要外挂硬盘存镜像文件,这种情况下(没有电源插头,而且电源功率太少)只好把工作站硬盘拆到别的机器上做备份,十分麻烦。第四,DELL的机器因为不是为工业设计,清一色的没有ISA插槽,PCI插槽一般只有二到三个。DCS设计一般采用双冗余网络,主板带个网卡,另一个网卡占用一个PCI插槽,可用的只有一到二个。如果有的DCS的专用键盘要用扩展卡的话,可用的PCI就几乎没有了。第五,DELL的电脑机箱全部采用无螺丝设计,无关人员很容易打开机器造成隐患。而且电脑机箱的强度更是不能和工控机的机箱相比。DELL的机箱没有软驱和光驱的前挡板,电源和重启键也没有保护,容易误操作,工控机都可以锁起来。第六,DELL的电脑价格也不便宜,一般都在一万至二万多,不会比工控机便宜。第七,无一例外地使用19寸或21寸的大屏幕显示器。一般都使用CRT显示器,而操作人员使用时长时间观察同一个画面,显示器很快就会被电子枪打出痕迹。液晶显示器不会有这个问题,而且DELL的CRT显示器一般为SONY代工的价格比17寸液晶显示器要贵很多。虽然液晶显示器有灯管寿命不太长的毛病,但为了长时间盯着屏幕看的操作人员着想还是应该考虑采用液晶显示器。
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主营DCS系统配件
机器人系统配件
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