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How to choose between PLC and DCS depends on the specific project and plant type. Because of different applications, the requirements of the control system are also different.
In addition to some basic criteria, we must also consider the installation, scalability, maintenance and other factors. Sometimes, one choice is very suitable for a factory, and in another case it may not be. Therefore, the more factors considered in the selection of control system, the more conducive to the realization of short-term and long-term goals.
At present, although PLC system may be the most cost-effective for small equipment, DCS system provides more economical scalability and is more likely to obtain higher initial return on investment.
PLC is suitable for discrete production, generally composed of separate production devices, mainly used to complete the assembly of components, such as labeling, filling or grinding. DCS is suitable for process manufacturing. Automated systems are often used to produce by recipe rather than by piece in a continuous and batch manner. Large scale continuous processing equipment, such as refineries and chemical plants, all use DCS system. Mixed application usually uses PLC and DCS at the same time.
鈻� process scale:
Small system (<300 i / o points) may have less budget, so plc is more suitable. dcs has a b database, which is easier to manage and upgrade, and can play a more important role in large factory applications.
鈻� upgrade plan:
PLC system can be selected for small-scale industrial process, but if the process needs to be expanded or upgraded, more PLC hardware and database need to be added, and independent maintenance is needed. This process is time-consuming and laborious, and prone to errors. At this time, DCS is more suitable. As DCS is easier to upgrade, it can also manage users&锛�39; trust from the central hub, so it is easier for later maintenance.
Integration requirements:
For stand-alone device, PLC is the ideal choice. When the factory configures multiple PLCs, it will produce the requirement of interconnection. This is generally difficult to implement because it is usually necessary to map data using communication protocols. Especially when the user needs to change, once a PLC system is changed, the two PLCs may not communicate normally. DCS does not need mapping, configuration change is just a simple process, the controller is the system&锛�39;s own.
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PR6424/010-040+CON 011
EPRO MMS3120/022-100 MMS3120
EPRO PR9268/202-10
EPRO PR9268/205-000 .
EPRO PR9268/206-10
EPRO PR6424/000-000
EPRO PR6423/011-010-CN
CON021 PR6423/002-000? 9200-00006N EPRO
CON041 PR6423/002-011? 9200-00021N EPRO
MMS3120/022-100 EPRO
MMS6120 EPRO
MMS6220 EPRO
MMS6250 EPRO
MMS6350 EPRO
MMS6410 EPRO
MMS6418 EPRO
MMS6620 EPRO
PR642 CON021 EPRO
PR6423/000-031 EPRO
PR6423/002-000 CON021 EPRO
"PR6423/002-001 CON041" EPRO
PR6423/002-040? ? CON041 EPRO
PR6423/003-010-CN EPRO
PR6423/003-030 CON021 EPRO
PR6423/003-031 EPRO
PR6423/004-030 CON021 EPRO
PR6423/005-001 EPRO
PR6423/00R-101 CON031 EPRO
PR6423/010-010 EPRO
PR6423/010-010 CON021 EPRO
PR6423/010-040 CON021 EPRO
PR6423/013-000-CN EPRO
PR6423/018-010 CON021 EPRO
PR6423/10R-010 EPRO
PR6423/10R-010 CON021 EPRO
PR6423/10R-040 CON021 EPRO
PR6424/000-000? CON21 EPRO
PR6424/000-030 EPRO
PR6424/000-030 CON021 EPRO
PR6424/000-040? CON21 EPRO
PR6424/006-010 EPRO
PR6424/006-030 EPRO
PR6424/010-010 CON021 EPRO
"PR6424/012-000 CON011" EPRO
"PR6424/012-010 CON011" EPRO
PR6426/010-010 CON021 EPRO
PR9268/200-000 EPRO
PR9268/201-000 EPRO
PR9268/300-000 EPRO
PR9268/301-000 EPRO
PR9350/02 EPRO
PR9376/010-011 EPRO
PR96424/010-000? CON011 EPRO
UES815S EPRO
MMS6110 EPRO
PR6423/009-010-CN EPRO
PR6423/010-010 EPRO
PR6423/10R-030 EPRO
PR6424/012-000 EPRO
PR9268-200-000 EPRO
PR9350-02 EPRO
PR9376/010-011 EPRO
PR6423/00R-010 EPRO
PR6423/011-010-CN EPRO
PR6423/002-000 EPRO
PR6423/010-000-CN EPRO
PR6423/010-040 EPRO
PR6424012-000 EPRO
UES815S EPRO
PR6423010-010 EPRO
PR6423/004-030-CN EPRO
PR9268-300-000 EPRO
PR EPRO
PR642310R-030 EPRO
PR 6426/000-040 EPRO
021/916-240 EPRO
CON041 EPRO
PR6423009-010-CN EPRO
PR6424/002-030 EPRO
A6120 EPRO
MMS6210 EPRO
MMS6110 EPRO
MMS6110 EPRO
PR6423/010-010-CN EPRO
CON021 EPRO
UES815S-24A EPRO
UES815S-24AR EPRO
SDM010 EPRO
RSM020 EPRO
940860010091 EPRO
940860010250 EPRO
CSI6312/08 EPRO
A6210 EPRO
9100-00002-10 EPRO
MMS6312 EPRO
MMS6120 EPRO
