DS200TCPDG2B GE Power Distribution Board Mark VI Series Circuit Card

DS200TCPDG2B GE Power Distribution Board Mark VI Series Circuit Card

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Description:

The DS200TCPDG2B Early PLCs are generally called programmable logic controllers. At this time, PLCs were more or less substitutes for relay control devices.

And their main functions were to execute sequence control and timing, which were originally completed by relays.

It appeared in the form of a quasi-computer in hardware, and improvements were made to the 10 interface circuit to meet the requirements of industrial control sites.

The devices in the device mainly used discrete components and small and medium-scale integrated circuits, and the memory used magnetic core memory.

In order to improve its anti-interference ability, some measures have been taken. In software programming, the relay control circuit method familiar to the majority of electrical engineering technicians is adopted - ladder diagram.Therefore, the performance of early PLC is better than that of relay control devices.

Its advantages include simple and easy to understand, easy to install, small size, low energy consumption, fault indication, and reusability. Among them, the ladder diagram, a unique programming language of PLC, has been used to this day.