GE MULTILIN MTM工控备件PLC模块DCS系统模块
¥4100.00
GENERIC 26D023003工控备件PLC模块DCS系统模块
¥4100.00
GOTTIUG HG57500C工控备件PLC模块DCS系统模块
¥4100.00
H0NEYWELL 97-4698 REV.A供货工控备件卡件模块
¥5200.00
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DCS is developed from the traditional instrument panel monitoring system, which focuses on the control of instruments; PLC is developed from the traditional relay circuit, the original PLC does not even have analog processing capacity, therefore, PLC emphasizes the logic operation ability.
In terms of system scalability and compatibility:
For the PLC system, there is generally no or few expansion requirements, and there are few compatibility requirements. PLC generally uses a dedicated network structure, if two or more systems require resource sharing, it is very difficult for PLC.
DCS in the process of development is also the system of each manufacturer, but most of the DCS system, although the internal (process level) communication protocol is not the same, but the operation level network platform is the same choice of Ethernet, using the standard or deformation of TCP / IP protocol, which provides a very convenient scalability.
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